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Name	DeprecatedItems
Namespace	http://fasb.org/us-gaap/2021-01-31
Prefix	us-gaap
Data type	xbrli:stringItemType
Period type	duration
Substitution Group	xbrli:item
Balance	None
Nillable	True
Abstract	True

Text	Lang	Role	Container role
Deprecated Items [Abstract]	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link

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Name	Relation Type	Role
ASU 2015-01 Transition [Abstract] (Deprecated 2019-01-31) `us-gaap:ASU201501TransitionAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Changes and Error Corrections [Text Block] (Deprecated 2021-01-31) `us-gaap:AccountingChangesAndErrorCorrectionsTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Changes [Text Block] (Deprecated 2021-01-31) `us-gaap:AccountingChangesTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Guidance [Domain] (Deprecated 2021-01-31) `us-gaap:AccountingGuidanceMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-01 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201401Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-04 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201404Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-05 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201405Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-11 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201411Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-12 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201412Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-13 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201413Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-14 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201414Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2014-16 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201416Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-01 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201501Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-02 [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201502Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-03 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201503Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-04 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201504Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-05 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201505Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-06 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201506Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-07 [Member] (Deprecated 2020-01-31) `us-gaap:AccountingStandardsUpdate201507Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-10 [Member] (Deprecated 2020-01-31) `us-gaap:AccountingStandardsUpdate201510Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-11 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201511Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-13 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201513Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2015-16 [Member] (Deprecated 2019-01-31) `us-gaap:AccountingStandardsUpdate201516Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-04 Cumulative Effect, Period of Adoption [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201604CumulativeEffectPeriodOfAdoptionMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-04 Retrospective [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201604RetrospectiveMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-05 [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201605Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-07 [Member] (Deprecated 2020-01-31) `us-gaap:AccountingStandardsUpdate201607Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-15 Prospective [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201615ProspectiveMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-15 Retrospective [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201615RetrospectiveMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-16 [Member] (Deprecated 2020-01-31) `us-gaap:AccountingStandardsUpdate201616Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-17 [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201617Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2016-19 [Member] (Deprecated 2020-01-31) `us-gaap:AccountingStandardsUpdate201619Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2017-01 [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201701Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounting Standards Update 2017-09 [Member] (Deprecated 2021-01-31) `us-gaap:AccountingStandardsUpdate201709Member`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounts Receivable, Additional Narrative Disclosure (Deprecated 2019-01-31) `us-gaap:AccountsReceivableAdditionalNarrativeDisclosure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounts Receivable, before Allowance for Credit Loss, Noncurrent [Abstract] (Deprecated 2021-01-31) `us-gaap:AccountsReceivableBeforeAllowanceForCreditLossNoncurrentAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounts Receivable, Noncurrent, Not Past Due (Deprecated 2021-01-31) `us-gaap:AccountsReceivableNoncurrentNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Accounts Receivable, Noncurrent, Past Due (Deprecated 2021-01-31) `us-gaap:AccountsReceivableNoncurrentPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Additional Charges for Commodity Accounts (Deprecated 2019-01-31) `us-gaap:AdditionalChargesForCommodityAccounts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Additional Charges for Securities Accounts (Deprecated 2019-01-31) `us-gaap:AdditionalChargesForSecuritiesAccounts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Adjustments for New Accounting Principle, Early Adoption [Member] (Deprecated 2021-01-31) `us-gaap:AdjustmentsForNewAccountingPrincipleEarlyAdoptionMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Advertising Cost, Policy, Expensed Advertising Cost [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:AdvertisingCostPolicyExpensedAdvertisingCost`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Aged Fails-to-Deliver (Deprecated 2019-01-31) `us-gaap:AgedFailsToDeliver`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Aged Short Security Differences (Deprecated 2019-01-31) `us-gaap:AgedShortSecurityDifferences`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Aggregate Indebtedness (Deprecated 2019-01-31) `us-gaap:AggregateIndebtedness`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Aggregate Indebtedness [Abstract] (Deprecated 2019-01-31) `us-gaap:AggregateIndebtednessAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Allowance for Credit Losses, Change in Method of Calculating Impairment (Deprecated 2019-01-31) `us-gaap:AllowanceForCreditLossesChangeInMethodOfCalculatingImpairment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
AOCI, Gain (Loss), Debt Securities, Available-for-sale, with Allowance for Credit Loss [Abstract] (Deprecated 2021-01-31) `us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
AOCI, Gain (Loss), Debt Securities, Available-for-sale, without Allowance for Credit Loss [Abstract] (Deprecated 2021-01-31) `us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Assets Leased to Others [Member] (Deprecated 2021-01-31) `us-gaap:AssetsLeasedToOthersMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Type of Financial Asset (Deprecated 2020-01-31) `us-gaap:AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesTypeOfFinancialAsset`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract] (Deprecated 2019-01-31) `us-gaap:AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Debt Securities, Available-for-sale, Maturity, Date (Deprecated 2019-01-31) `us-gaap:AvailableforsaleSecuritiesDebtMaturitiesDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Geographic Concentration (Deprecated 2019-01-31) `us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherGeographicConcentration`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Third Party Guarantees [Abstract] (Deprecated 2019-01-31) `us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherThirdPartyGuaranteesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Other, Third Party Guarantees, Description (Deprecated 2019-01-31) `us-gaap:AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureOtherThirdPartyGuaranteesDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Average Production Costs Per Barrel of Oil Equivalents (BOE) (Deprecated 2019-01-31) `us-gaap:AverageProductionCostsPerBarrelOfOilEquivalentsBOE`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Average Sales Price and Production Costs Per Unit of Production [Line Items] (Deprecated 2019-01-31) `us-gaap:AverageSalesPriceAndProductionCostsPerUnitOfProductionLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Oil and Gas Production Type [Axis] (Deprecated 2019-01-31) `us-gaap:AverageSalesPriceAndProductionCostsPerUnitOfProductionProductionTypeAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Banking and Thrift [Abstract] (Deprecated 2020-01-31) `us-gaap:BankingAndThriftAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Basis for Exemption from Segregation Requirements, Description (Deprecated 2019-01-31) `us-gaap:BasisForExemptionFromSegregationRequirementsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Capital and Allowable Subordinated Borrowings (Deprecated 2019-01-31) `us-gaap:CapitalAndAllowableSubordinatedBorrowings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Capital and Allowable Subordinated Borrowings [Abstract] (Deprecated 2019-01-31) `us-gaap:CapitalAndAllowableSubordinatedBorrowingsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cash and Securities Segregated under Commodity Exchange Act, Description (Deprecated 2019-01-31) `us-gaap:CashAndSecuritiesSegregatedUnderCommodityExchangeActDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cash and Securities Segregated under Federal and Other Regulations, Description (Deprecated 2019-01-31) `us-gaap:CashAndSecuritiesSegregatedUnderFederalAndOtherRegulationsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cash and Securities Segregated under Other Regulations (Deprecated 2019-01-31) `us-gaap:CashAndSecuritiesSegregatedUnderOtherRegulations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Change in Accounting Principle, Accounting Standards Update, Transition Option Elected [Fixed List] (Deprecated 2020-01-31) `us-gaap:ChangeInAccountingPrincipleAccountingStandardsUpdateTransitionOptionElectedFixedList`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Class of Warrant or Right, Title of Security Warrants or Rights Outstanding (Deprecated 2020-01-31) `us-gaap:ClassOfWarrantOrRightTitleOfSecurityWarrantsOrRightsOutstanding`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Classification [Domain] (Deprecated 2020-01-31) `us-gaap:ClassificationOfVariableInterestEntityDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collaborative Arrangement, Co-promotion [Member] (Deprecated 2019-01-31) `us-gaap:CollaborativeArrangementCopromotionMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collaborative Arrangement, Income Statement Classification (Deprecated 2019-01-31) `us-gaap:CollaborativeArrangementIncomeStatementClassification`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collaborative Arrangement, Product [Member] (Deprecated 2019-01-31) `us-gaap:CollaborativeArrangementProductAgreementMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Held on Reverse Repurchase Agreements Segregated under Commodity Exchange Act Regulation (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderCommodityExchangeActRegulation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Held on Reverse Repurchase Agreements Segregated under Commodity Exchange Act Regulation, Description (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderCommodityExchangeActRegulationDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Held on Reverse Repurchase Agreements Segregated under Other Regulations (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderOtherRegulations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Held on Reverse Repurchase Agreements Segregated under Other Regulations, Description (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderOtherRegulationsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Pledged on Reverse Repurchase Agreements Segregated under Securities Exchange Commission Regulation (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderSecuritiesExchangeCommissionRegulation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Collateral Pledged on Reverse Repurchase Agreements Segregated under Securities Exchange Commission Regulation, Description (Deprecated 2019-01-31) `us-gaap:CollateralHeldOnReverseRepurchaseAgreementsSegregatedUnderSecuritiesExchangeCommissionRegulationDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Committee for Uniform Securities Identification Procedures (CUSIP) (Deprecated 2019-01-31) `us-gaap:CommitteeForUniformSecuritiesIdentificationProceduresCUSIP`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Commodity Futures Contracts and Spot Commodities, Proprietary Capital Charges (Deprecated 2019-01-31) `us-gaap:CommodityFuturesContractsAndSpotCommoditiesProprietaryCapitalCharges`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Compensating Balance, Agreement (Deprecated 2020-01-31) `us-gaap:CompensatingBalanceAgreement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Compensation Cost Items [Abstract] (Deprecated 2019-01-31) `us-gaap:CompensationCostItemsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Computation of Net Capital Requirement, Aggregate Indebtedness Standard [Abstract] (Deprecated 2019-01-31) `us-gaap:ComputationOfNetCapitalRequirementAggregateIndebtednessStandardAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Consolidated Oil and Gas Production Costs, Unit of Measure (Deprecated 2019-01-31) `us-gaap:ConsolidatedOilAndGasProductionCostsUnitOfMeasure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Construction Contractors, Method of Reporting Affiliated Entities, Policy [Policy Text Block] (Deprecated 2020-01-31) `us-gaap:ConstructionContractorsMethodOfReportingAffiliatedEntitiesPolicyPolicyTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contingent Consideration Classified as Equity [Member] (Deprecated 2019-01-31) `us-gaap:ContingentConsiderationClassifiedAsEquityMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after Next Rolling Twelve Months [Abstract] (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterNextRollingTwelveMonthsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after One Year, Highest Interest Rate (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterOneYearHighestInterestRate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after One Year, Lowest Interest Rate (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterOneYearLowestInterestRate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after One Year, Weighted Average Interest Rate (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterOneYearWeightedAverageInterestRate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due after Rolling Year Five (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueAfterRollingYearFive`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due in Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueInNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due in Rolling Year Five (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueInRollingYearFive`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due in Rolling Year Four (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueInRollingYearFour`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due in Rolling Year Three (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueInRollingYearThree`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Due in Rolling Year Two (Deprecated 2020-01-31) `us-gaap:ContractReceivableDueInRollingYearTwo`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Description (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, after Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueAfterNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, after Next Rolling Twelve Months [Abstract] (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueAfterNextRollingTwelveMonthsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, after Rolling Year Five (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueAfterRollingYearFive`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueInNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Rolling Year Five (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueInRollingYearFive`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Rolling Year Four (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueInRollingYearFour`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Rolling Year Three (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueInRollingYearThree`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Rolling Year Two (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageDueInRollingYearTwo`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable Retainage, Rolling Maturity [Abstract] (Deprecated 2020-01-31) `us-gaap:ContractReceivableRetainageRollingMaturityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Receivable, Rolling Maturity [Abstract] (Deprecated 2020-01-31) `us-gaap:ContractReceivableRollingMaturityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract with Customer, Asset, before Allowance for Credit Loss [Abstract] (Deprecated 2021-01-31) `us-gaap:ContractWithCustomerAssetBeforeAllowanceForCreditLossAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract with Customer, Asset, Not Past Due (Deprecated 2021-01-31) `us-gaap:ContractWithCustomerAssetNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract with Customer, Asset, Past Due (Deprecated 2021-01-31) `us-gaap:ContractWithCustomerAssetPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected after Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractsReceivableClaimsAndUncertainAmountsExpectedToBeCollectedAfterNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contracts Receivable, Claims and Uncertain Amounts, Expected to be Collected in Next Rolling Twelve Months (Deprecated 2020-01-31) `us-gaap:ContractsReceivableClaimsAndUncertainAmountsExpectedToBeCollectedInNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contracts Receivable, Claims and Uncertain Amounts, Rolling Maturity [Abstract] (Deprecated 2020-01-31) `us-gaap:ContractsReceivableClaimsAndUncertainAmountsRollingMaturityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contractual Maturities of Time Deposits, $100,000 or More, Description (Deprecated 2019-01-31) `us-gaap:ContractualMaturitiesOfTimeDeposits100000OrMoreDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost and Equity Method Investments Disclosure [Text Block] (Deprecated 2021-01-31) `us-gaap:CostAndEquityMethodInvestmentsDisclosureTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost-method Investments, Description [Text Block] (Deprecated 2021-01-31) `us-gaap:CostMethodInvestmentsDescriptionTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost Method Investments, Policy [Policy Text Block] (Deprecated 2021-01-31) `us-gaap:CostMethodInvestmentsPolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost of Domestic Regulated Gas Revenue (Deprecated 2019-01-31) `us-gaap:CostOfDomesticRegulatedGasRevenue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost of Goods Sold, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) `us-gaap:CostOfGoodsSoldExcludingDepreciationDepletionAndAmortization`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost of Merchandise Sales, Buying and Occupancy Costs (Deprecated 2019-01-31) `us-gaap:CostOfMerchandiseSalesBuyingAndOccupancyCosts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost of Services, Excluding Depreciation, Depletion, and Amortization (Deprecated 2019-01-31) `us-gaap:CostOfServicesExcludingDepreciationDepletionAndAmortization`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cost of Services, Oil and Gas (Deprecated 2019-01-31) `us-gaap:CostOfServicesOilAndGas`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Report Date [Axis] (Deprecated 2019-01-31) `us-gaap:CreationDateAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cumulative Effect of New Accounting Principle in Period of Adoption (Deprecated 2020-01-31) `us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cumulative Effect on Retained Earnings, before Tax (Deprecated 2020-01-31) `us-gaap:CumulativeEffectOnRetainedEarningsBeforeTax1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cumulative Effect on Retained Earnings, Net of Tax (Deprecated 2020-01-31) `us-gaap:CumulativeEffectOnRetainedEarningsNetOfTax1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cumulative Effect on Retained Earnings, Net of Tax [Abstract] (Deprecated 2020-01-31) `us-gaap:CumulativeEffectOnRetainedEarningsNetOfTaxAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Cumulative Effect on Retained Earnings, Tax (Deprecated 2020-01-31) `us-gaap:CumulativeEffectOnRetainedEarningsTax1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Debt Securities, Available-for-sale, Sale [Abstract] (Deprecated 2021-01-31) `us-gaap:DebtSecuritiesAvailableForSaleSaleAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Debt Securities, Held-to-maturity, Not Past Due (Deprecated 2021-01-31) `us-gaap:DebtSecuritiesHeldToMaturityNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Debt Securities, Held-to-maturity, Past Due (Deprecated 2021-01-31) `us-gaap:DebtSecuritiesHeldToMaturityPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Deductions (Charges) (Deprecated 2019-01-31) `us-gaap:DeductionsCharges`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Deductions (Charges) [Abstract] (Deprecated 2019-01-31) `us-gaap:DeductionsChargesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financial Statement Filing Date [Domain] (Deprecated 2019-01-31) `us-gaap:DefaultFinancialStatementsDateMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Deferred Policy Acquisition Costs Disclosure (Deprecated 2019-01-31) `us-gaap:DeferredPolicyAcquisitionCostsDisclosure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Deferred Sales Inducements, Description (Deprecated 2019-01-31) `us-gaap:DeferredSalesInducementsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Defined Benefit Plan [Abstract] (Deprecated 2020-01-31) `us-gaap:DefinedBenefitPensionPlansAndDefinedBenefitPostretirementPlansDisclosureAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Defined Benefit Plan, Net Periodic Benefit Cost, Practical Expedient, Comparative Period Disclosure [true false] (Deprecated 2021-01-31) `us-gaap:DefinedBenefitPlanNetPeriodicBenefitCostPracticalExpedientComparativePeriodDisclosure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Defined Benefit Plan, Plan Name (Deprecated 2020-01-31) `us-gaap:DefinedBenefitPlanPlanName`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Defined Contribution Plan [Abstract] (Deprecated 2020-01-31) `us-gaap:DefinedContributionPensionAndOtherPostretirementPlansDisclosureAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Defined Contribution Plan, Plan Name (Deprecated 2020-01-31) `us-gaap:DefinedContributionPlanPlanName`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Deposit Assets or Liabilities, Change in Amounts Based on Change in Assumptions Supporting Expected Recovery Amounts (Deprecated 2020-01-31) `us-gaap:DepositAssetsOrLiabilitiesChangeInAmountsBasedOnChangeInAssumptionsSupportingExpectedRecoveryAmounts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Derivatives, Hedge Discontinuances [Policy Text Block] (Deprecated 2020-01-31) `us-gaap:DerivativesHedgeDiscontinuances`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Derivatives, Hedge Discontinuances, Anticipated Transactions [Policy Text Block] (Deprecated 2020-01-31) `us-gaap:DerivativesHedgeDiscontinuancesAnticipatedTransactions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Derivatives, Hedge Discontinuances, Termination of Hedging Instrument or Hedged Item [Policy Text Block] (Deprecated 2020-01-31) `us-gaap:DerivativesHedgeDiscontinuancesTerminationOfHedgingInstrumentOrHedgedItem`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Derivatives, Methods of Accounting (Deprecated 2020-01-31) `us-gaap:DerivativesMethodsOfAccounting`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Derivatives, Methods of Accounting, Derivative Types (Deprecated 2020-01-31) `us-gaap:DerivativesMethodsOfAccountingDerivativeTypes`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting for Discontinuation of Foreign Currency Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingForDiscontinuationOfForeignCurrencyFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting for Discontinuation of Interest Rate Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingForDiscontinuationOfInterestRateFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting for Discontinuation of Price Risk Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingForDiscontinuationOfPriceRiskFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting Method for Foreign Currency Derivative Instruments Not Designated as Hedging Instruments (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingMethodForForeignCurrencyDerivativeInstrumentsNotDesignatedAsHedgingInstruments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting Method for Interest Rate Derivative Instruments Not Designated as Hedging Instruments (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingMethodForInterestRateDerivativeInstrumentsNotDesignatedAsHedgingInstruments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting Method for Price Risk Derivative Instruments Not Designated as Hedging Instruments (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingMethodForPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting Method Used for Foreign Currency Derivatives (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingMethodUsedForForeignCurrencyDerivatives`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Accounting Method Used for Price Risk Derivatives (Deprecated 2020-01-31) `us-gaap:DescriptionOfAccountingMethodUsedForPriceRiskDerivatives`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Cash Flow Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfCashFlowHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Discontinuation of Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfDiscontinuationOfFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Discontinuation of Foreign Currency Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfDiscontinuationOfForeignCurrencyFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Discontinuation of Interest Rate Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfDiscontinuationOfInterestRateFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Discontinuation of Price Risk Fair Value Hedge (Deprecated 2020-01-31) `us-gaap:DescriptionOfDiscontinuationOfPriceRiskFairValueHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Effect of Subsequent Foreign Currency Exchange Rate Change (Deprecated 2020-01-31) `us-gaap:DescriptionOfEffectOfSubsequentForeignCurrencyExchangeRateChange`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Fair Value Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfFairValueHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Foreign Currency Cash Flow Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfForeignCurrencyCashFlowHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Foreign Currency Fair Value Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfForeignCurrencyFairValueHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Interest Rate Cash Flow Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfInterestRateCashFlowHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Interest Rate Fair Value Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfInterestRateFairValueHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Location of Gain (Loss) on Foreign Currency Cash Flow Hedge Derivatives in Financial Statements (Deprecated 2020-01-31) `us-gaap:DescriptionOfLocationOfGainLossOnForeignCurrencyCashFlowHedgeDerivativesInFinancialStatements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Location of Gain (Loss) on Foreign Currency Derivative in Financial Statements (Deprecated 2020-01-31) `us-gaap:DescriptionOfLocationOfGainLossOnForeignCurrencyDerivativeInFinancialStatements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Location of Gain (Loss) on Interest Rate Cash Flow Hedge Derivative in Financial Statements (Deprecated 2020-01-31) `us-gaap:DescriptionOfLocationOfGainLossOnInterestRateCashFlowHedgeDerivativeInFinancialStatements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Location of Gain (Loss) on Interest Rate Derivative on Income Statement (Deprecated 2020-01-31) `us-gaap:DescriptionOfLocationOfGainLossOnInterestRateDerivativeOnIncomeStatement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Location of Gain (Loss) on Interest Rate Fair Value Hedge Derivative in Financial Statements (Deprecated 2020-01-31) `us-gaap:DescriptionOfLocationOfGainLossOnInterestRateFairValueHedgeDerivativeInFinancialStatements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Net Investment Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfNetInvestmentHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of New Accounting Pronouncements Not yet Adopted [Text Block] (Deprecated 2021-01-31) `us-gaap:DescriptionOfNewAccountingPronouncementsNotYetAdopted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Price Risk Cash Flow Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfPriceRiskCashFlowHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Price Risk Fair Value Hedge Accounting Method (Deprecated 2020-01-31) `us-gaap:DescriptionOfPriceRiskFairValueHedgeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Significant Servicing Covenants for Servicers with Net Worth Requirements from Multiple Sources (Deprecated 2021-01-31) `us-gaap:DescriptionOfSignificantServicingCovenantsForServicersWithNetWorthRequirementsFromMultipleSources`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Cash Flow Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfCashFlowHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Fair Value Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfFairValueHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Foreign Currency Cash Flow Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfForeignCurrencyCashFlowHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Foreign Currency Derivatives Not Designated as Hedging Instruments Held (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfForeignCurrencyDerivativesNotDesignatedAsHedgingInstrumentsHeld`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Foreign Currency Fair Value Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfForeignCurrencyFairValueHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Interest Rate Cash Flow Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfInterestRateCashFlowHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Interest Rate Derivatives Not Designated as Hedging Instruments Held (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfInterestRateDerivativesNotDesignatedAsHedgingInstrumentsHeld`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Interest Rate Fair Value Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfInterestRateFairValueHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Net Investment Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfNetInvestmentHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Price Risk Cash Flow Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfPriceRiskCashFlowHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Price Risk Derivatives Not Designated as Hedging Instruments (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfPriceRiskDerivativesNotDesignatedAsHedgingInstruments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Description of Types of Price Risk Fair Value Hedging Instruments Used (Deprecated 2020-01-31) `us-gaap:DescriptionOfTypesOfPriceRiskFairValueHedgingInstrumentsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Direct Financing Lease, Net Investment in Lease, Not Past Due (Deprecated 2021-01-31) `us-gaap:DirectFinancingLeaseNetInvestmentInLeaseNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Direct Financing Lease, Net Investment in Lease, Past Due (Deprecated 2021-01-31) `us-gaap:DirectFinancingLeaseNetInvestmentInLeasePastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discontinuation of Cash Flow Hedge (Deprecated 2020-01-31) `us-gaap:DiscontinuationOfCashFlowHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discontinuation of Foreign Currency Cash Flow Hedge (Deprecated 2020-01-31) `us-gaap:DiscontinuationOfForeignCurrencyCashFlowHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discontinuation of Interest Rate Cash Flow Hedge (Deprecated 2020-01-31) `us-gaap:DiscontinuationOfInterestRateCashFlowHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discontinuation of Price Risk Cash Flow Hedge (Deprecated 2020-01-31) `us-gaap:DiscontinuationOfPriceRiskCashFlowHedge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Cash Flow Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfCashFlowHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Fair Value Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfFairValueHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Foreign Currency Cash Flow Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfForeignCurrencyCashFlowHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Foreign Currency Fair Value Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfForeignCurrencyFairValueHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Interest Rate Cash Flow Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfInterestRateCashFlowHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Interest Rate Fair Value Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfInterestRateFairValueHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Net Investment Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfNetInvestmentHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Price Risk Cash Flow Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfPriceRiskCashFlowHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Discussion of Price Risk Fair Value Hedge Effectiveness Assessment and Measurement (Deprecated 2020-01-31) `us-gaap:DiscussionOfPriceRiskFairValueHedgeEffectivenessAssessmentAndMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Distribution Payment Made to Limited Liability Company (LLC) Member Forms Other than Cash or Stock, Description (Deprecated 2020-01-31) `us-gaap:DistributionPaymentMadeToLimitedLiabilityCompanyLLCMemberFormsOtherThanCashOrStockDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Earnings Per Share Policy, Basic (Deprecated 2020-01-31) `us-gaap:EarningsPerSharePolicyBasic`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Earnings Per Share Policy, Diluted (Deprecated 2020-01-31) `us-gaap:EarningsPerSharePolicyDiluted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Effect of Tax Cuts and Jobs Act, Accounting Incomplete, No Estimate [Abstract] (Deprecated 2020-01-31) `us-gaap:EffectOfTaxCutsAndJobsActOf2017AccountingIncompleteNoEstimateAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Effect of Tax Cuts and Jobs Act, Incomplete Accounting, Provisional [Abstract] (Deprecated 2020-01-31) `us-gaap:EffectOfTaxCutsAndJobsActOf2017IncompleteAccountingProvisionalAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Embedded Derivative, Accounting Method (Deprecated 2020-01-31) `us-gaap:EmbeddedDerivativeAccountingMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Employee Service Share-based Compensation, Estimated Quantity of Shares to be Repurchased in Following Period, Maximum (Deprecated 2019-01-31) `us-gaap:EmployeeServiceShareBasedCompensationEstimatedQuantityOfSharesToBeRepurchasedInFollowingPeriodMaximum`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Employee Service Share-based Compensation, Estimated Quantity of Shares to be Repurchased in Following Period, Minimum (Deprecated 2019-01-31) `us-gaap:EmployeeServiceShareBasedCompensationEstimatedQuantityOfSharesToBeRepurchasedInFollowingPeriodMinimum`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Employee Stock Ownership Plan (ESOP), Change in Fair Value Measurement from Prior Valuation [true false] (Deprecated 2019-01-31) `us-gaap:EmployeeStockOwnershipPlanESOPChangeInFairValueMeasurementFromPriorValuations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Employee Stock Ownership Plan (ESOP), Effect of Change in Fair Value Measurement (Deprecated 2019-01-31) `us-gaap:EmployeeStockOwnershipPlanESOPEffectOfChangeinFairValueMeasurement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equipment Leased to Other Party [Member] (Deprecated 2021-01-31) `us-gaap:EquipmentLeasedToOtherPartyMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity and Cost Method Investments, Policy [Policy Text Block] (Deprecated 2021-01-31) `us-gaap:EquityAndCostMethodInvestmentsPolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Issued in Business Combination [Member] (Deprecated 2019-01-31) `us-gaap:EquityIssuedInBusinessCombinationMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Assets (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Assets [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Cost of Sales (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationCostOfSales`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Current Assets (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Current Liabilities (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment Summarized Financial Information, Equity (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment Summarized Financial Information, Equity [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Equity Excluding Noncontrolling Interests (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationEquityOrCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLossAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Income (Loss) from Continuing Operations (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Income Statement [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationIncomeStatementAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Liabilities (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Liabilities [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Liabilities and Equity (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Liabilities and Equity [Abstract] (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationLiabilitiesAndEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Noncontrolling Interest (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Net Income (Loss) (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Noncurrent Assets (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Redeemable Preferred Stock (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRedeemablePreferredStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Summarized Financial Information, Revenue (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentSummarizedFinancialInformationRevenue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated [Abstract] (Deprecated 2019-01-31) `us-gaap:EquityMethodInvestmentUnrealizedIntercompanyProfitLossNotEliminatedAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated, Amount (Deprecated 2020-01-31) `us-gaap:EquityMethodInvestmentUnrealizedIntercompanyProfitLossNotEliminatedAmount`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Equity Method Investment, Unrealized Intercompany Profit (Loss) Not Eliminated, Description (Deprecated 2019-01-31) `us-gaap:EquityMethodInvestmentUnrealizedIntercompanyProfitLossNotEliminatedDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Excess Net Capital at 1000 Percent (Deprecated 2019-01-31) `us-gaap:ExcessNetCapitalAt1000Percent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item [Axis] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Change in Prior Period Estimate, Year of Origin (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemChangeInPriorPeriodEstimateYearOfOrigin`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Description of Event or Transaction (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemDescriptionOfEventOrTransaction`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item [Domain] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Earnings Per Share Impact, Gross (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemEarningsPerShareImpactGross`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Earnings Per Share Impact, Net (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemEarningsPerShareImpactNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Fourth Quarter (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemFourthQuarter`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Gain (Loss), Net of Tax, Attributable to Noncontrolling Interest (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemGainOrLossNetOfTaxAttributableToNoncontrollingInterest`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Gain (Loss), Net of Tax, Attributable to Parent (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemGainOrLossNetOfTaxAttributableToReportingEntity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item [Line Items] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item [Member] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Gain (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemNetOfTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item of Investee (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemOfInvestee`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Items Adjustment Included in Income from Continuing Operations, Nature (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemsAdjustmentIncludedInIncomeFromContinuingOperationsNature`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Items Adjustment Included in Income from Operations, Gain (Loss) Amount (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemsAdjustmentIncludedInIncomeFromOperationsGainLossAmount`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Items Disclosure [Text Block] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemsDisclosureTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Item, Gain (Loss), Gross (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemsGross`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Extraordinary Items [Table] (Deprecated 2019-01-31) `us-gaap:ExtraordinaryItemsTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value by Shareholders' Equity Class [Domain] (Deprecated 2019-01-31) `us-gaap:FairValueByShareholdersEquityClassDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Change in Unrealized Gain (Loss) (Deprecated 2019-01-31) `us-gaap:FairValueInstrumentsClassifiedInShareholdersEquityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] (Deprecated 2019-01-31) `us-gaap:FairValueInstrumentsClassifiedInShareholdersEquityMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] (Deprecated 2019-01-31) `us-gaap:FairValueInstrumentsClassifiedInShareholdersEquityMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Table] (Deprecated 2019-01-31) `us-gaap:FairValueInstrumentsClassifiedInShareholdersEquityMeasuredOnRecurringBasisUnobservableInputReconciliationTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Instruments Classified in Shareholders' Equity Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] (Deprecated 2019-01-31) `us-gaap:FairValueInstrumentsClassifiedInShareholdersEquityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Level 3 Transfers in, Description (Deprecated 2019-01-31) `us-gaap:FairValueLevel3TransfersInDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Level 3 Transfers out, Description (Deprecated 2019-01-31) `us-gaap:FairValueLevel3TransfersOutDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings (Deprecated 2019-01-31) `us-gaap:FairValueMeasuredOnRecurringBasisGainLossIncludedInEarnings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings, Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasuredOnRecurringBasisGainLossIncludedInEarningsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liability, Gain (Loss) Included in Other Comprehensive Income (Loss), Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilityGainLossIncludedInOtherComprehensiveIncomeLossDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings, Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included in Other Comprehensive Income (Loss) (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisGainLossIncludedInOtherComprehensiveIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Gain (Loss) Included in Earnings (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInEarnings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Gain (Loss) Included in Earnings, Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInEarningsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Gain (Loss) Included in Other Comprehensive Income (Loss) (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInOtherComprehensiveIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Gain (Loss) Included in Other Comprehensive Income (Loss), Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityGainLossIncludedInOtherComprehensiveIncomeLossDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Issuances (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityIssues`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Period Increase (Decrease) (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPeriodIncreaseDecrease`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Purchases (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPurchases`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Purchases, (Sales), Issuances, (Settlements) (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPurchasesSalesIssuesSettlements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Purchases, (Sales), Issuances, (Settlements) [Abstract] (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityPurchasesSalesIssuesSettlementsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Sales (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquitySales`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Settlements (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquitySettlements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers Into Level 3 (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersIntoLevel3`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers, Net (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers, Net [Abstract] (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Instruments Classified in Shareholders' Equity, Transfers out of Level 3 (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisInstrumentsClassifiedInShareholdersEquityTransfersOutOfLevel3`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings, Description (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Value of Instruments Classified in Shareholders' Equity (Deprecated 2019-01-31) `us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisValueOfInstrumentsClassifiedInShareholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Finance Lease, Cost [Abstract] (Deprecated 2019-01-31) `us-gaap:FinanceLeaseCostAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Allowance Policy [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:FinanceLoanAndLeaseReceivablesHeldForInvestmentAllowanceAndNonperformingLoansAllowancePolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financial Instruments Owned and Pledged as Collateral, Assets, Not Separately Reported, Classification (Deprecated 2020-01-31) `us-gaap:FinancialInstrumentsOwnedAndPledgedAsCollateralAssetsNotSeparatelyReportedClassification`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Additional Disclosures [Abstract] (Deprecated 2019-01-31) `us-gaap:FinancingReceivableAdditionalDisclosuresAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, after Deferred Income Offset (Deprecated 2020-01-31) `us-gaap:FinancingReceivableAfterDeferredIncomeOffset`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, after Deferred Income Offset [Abstract] (Deprecated 2020-01-31) `us-gaap:FinancingReceivableAfterDeferredIncomeOffsetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Allowance for Credit Losses, Factors that Influenced Management's Judgment (Deprecated 2019-01-31) `us-gaap:FinancingReceivableAllowanceForCreditLossesFactorsThatInfluencedManagementsJudgment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Allowance for Credit Losses, Risk Characteristics (Deprecated 2019-01-31) `us-gaap:FinancingReceivableAllowanceForCreditLossesRiskCharacteristics`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Modifications, Determination of Allowance for Credit Losses (Deprecated 2019-01-31) `us-gaap:FinancingReceivableModificationsDeterminationOfAllowanceForCreditLosses1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Modifications, Nature and Extent of Transaction (Deprecated 2019-01-31) `us-gaap:FinancingReceivableModificationsNatureAndExtentOfTransaction1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Modifications, Subsequent Default, Determination of Allowance for Credit Losses (Deprecated 2019-01-31) `us-gaap:FinancingReceivableModificationsSubsequentDefaultDeterminationOfAllowanceForCreditLosses`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Modifications, Subsequent Default, Nature and Extent of Transaction (Deprecated 2019-01-31) `us-gaap:FinancingReceivableModificationsSubsequentDefaultNatureAndExtentOfTransaction`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Past Due and Not Past Due [Abstract] (Deprecated 2021-01-31) `us-gaap:FinancingReceivablePastDueAndNotPastDueAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Recorded Investment, Aging [Abstract] (Deprecated 2021-01-31) `us-gaap:FinancingReceivableRecordedInvestmentAgingAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Not Past Due (Deprecated 2021-01-31) `us-gaap:FinancingReceivableRecordedInvestmentCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Past Due (Deprecated 2021-01-31) `us-gaap:FinancingReceivableRecordedInvestmentPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Financing Receivable, Troubled Debt Restructuring [Abstract] (Deprecated 2021-01-31) `us-gaap:FinancingReceivableTroubledDebtRestructuringAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Description (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Accounts Payable (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAccountsPayable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Accrued Liabilities (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAccruedLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Accumulated Depreciation and Amortization (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedDepreciationAndAmortization`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Accumulated Other Comprehensive Income (Loss) (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAccumulatedOtherComprehensiveIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Additional Paid-in Capital (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAdditionalPaidInCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Amortizable Intangible Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAmortizableIntangibleAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Buildings and Improvements (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseBuildingsAndImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Capital Lease Obligations, Noncurrent (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCapitalLeaseObligationsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Cash and Cash Equivalents (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCashAndCashEquivalents`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Common Stock (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCommonStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Capital Lease Obligations (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfCapitalLeaseObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Current Maturities of Long-term Debt (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseCurrentMaturitiesOfLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Debtor-in-Possession Financing (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDebtorInPossessionFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Debt Issuance Costs (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDeferredFinancingCosts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Assets, Current (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Liabilities, Current (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Deferred Income Tax Liabilities, Noncurrent (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseDeferredIncomeTaxLiabilitiesNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Equipment (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Furniture and Fixtures (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseFurnitureAndFixtures`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Goodwill (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseGoodwill`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Inventories (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseInventories`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Investments (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Land (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLand`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Leasehold Improvements (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLeaseholdImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Liabilities (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Liabilities and Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Liabilities and Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesAndStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Liabilities Subject to Compromise (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLiabilitiesSubjectToCompromise`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Long-term Debt [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseLongTermDebtAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Nonamortizable Intangible Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseNonamortizableIntangibleAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Noncurrent Other Obligations (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseNoncurrentOtherObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Current Liabilities (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Long-term Debt (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Noncurrent Obligations (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Noncurrent Obligations [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherNoncurrentObligationsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Postretirement Obligations (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherPostretirementObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Other Property and Equipment (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseOtherPropertyAndEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Pension Obligations (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePensionObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Postconfirmation Credit Facility (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePostconfirmationCreditFacility`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Preferred and Common Stock Held in Treasury (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePreferredAndCommonStockHeldInTreasury`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Preferred Stock (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePreferredStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Prepaid and Other Current Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePrepaidAndOtherCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Property and Equipment, Net [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyAndEquipmentNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Property under Capital Lease Arrangements (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreasePropertyUnderCapitalLeaseArrangements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Receivables, Net (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseReceivablesNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Reorganization Value in Excess of Amounts Allocable to Identifiable Assets (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseReorganizationValueInExcessOfAmountsAllocableToIdentifiableAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Restricted Cash and Cash Equivalents, Current (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseRestrictedCashAndCashEquivalentsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Restricted Cash and Cash Equivalents, Noncurrent (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseRestrictedCashAndCashEquivalentsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Retained Earnings (Deficit) (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseRetainedEarningsDeficit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Short-term Borrowings (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseShortTermBorrowings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Short-term Investments (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseShortTermInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment, Increase (Decrease), Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentIncreaseDecreaseStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Fresh-Start Adjustment [Line Items] (Deprecated 2021-01-31) `us-gaap:FreshStartAdjustmentLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Future Policy Benefits Reserve Activity, Description (Deprecated 2019-01-31) `us-gaap:FuturePolicyBenefitsReserveActivityDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Gain (Loss) from Adjustments to Prior Period Extraordinary Items (Deprecated 2019-01-31) `us-gaap:GainLossFromAdjustmentsToPriorPeriodExtraordinaryItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Gain (Loss) on Sale of Properties, Applicable Income Taxes (Deprecated 2020-01-31) `us-gaap:GainLossOnSaleOfPropertiesApplicableIncomeTaxes`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Gain (Loss) on Sale of Properties, before Applicable Income Taxes (Deprecated 2020-01-31) `us-gaap:GainLossOnSaleOfPropertiesBeforeApplicableIncomeTaxes`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes (Deprecated 2020-01-31) `us-gaap:GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes [Abstract] (Deprecated 2020-01-31) `us-gaap:GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Goods and Services Exchanged for Equity Instrument [Member] (Deprecated 2019-01-31) `us-gaap:GoodsAndServicesExchangedForEquityInstrumentMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Bankers' Acceptances, Certificates of Deposit and Commercial Paper (Deprecated 2019-01-31) `us-gaap:HaircutsOnBankersAcceptancesCertificatesOfDepositAndCommercialPaper`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Contractual Securities Commitments (Deprecated 2019-01-31) `us-gaap:HaircutsOnContractualSecuritiesCommitments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Corporate Obligations (Deprecated 2019-01-31) `us-gaap:HaircutsOnCorporateObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Options (Deprecated 2019-01-31) `us-gaap:HaircutsOnOptions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Securities (Deprecated 2019-01-31) `us-gaap:HaircutsOnSecurities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Securities [Abstract] (Deprecated 2019-01-31) `us-gaap:HaircutsOnSecuritiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Securities Collateralizing Secured Demand Notes (Deprecated 2019-01-31) `us-gaap:HaircutsOnSecuritiesCollateralizingSecuredDemandNotes`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on State and Municipal Government Obligations (Deprecated 2019-01-31) `us-gaap:HaircutsOnStateAndMunicipalGovernmentObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Stocks and Warrants (Deprecated 2019-01-31) `us-gaap:HaircutsOnStocksAndWarrants`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Trading and Investment Securities (Deprecated 2019-01-31) `us-gaap:HaircutsOnTradingAndInvestmentSecurities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on US and Canadian Government Obligations (Deprecated 2019-01-31) `us-gaap:HaircutsOnUSAndCanadianGovernmentObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts on Undue Concentrations (Deprecated 2019-01-31) `us-gaap:HaircutsOnUndueConcentrations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Haircuts, Other (Deprecated 2019-01-31) `us-gaap:HaircutsOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund, Assets Limited as to Use, Current (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundAssetsLimitedAsToUseCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund, Assets Limited as to Use, Noncurrent (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundAssetsLimitedAsToUseNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund [Axis] (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund, Description (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund [Line Items] (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund, Name [Domain] (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundNameDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Health Care Trust Fund [Table] (Deprecated 2021-01-31) `us-gaap:HealthCareTrustFundTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact of Restatement on Earnings Per Share [Abstract] (Deprecated 2020-01-31) `us-gaap:ImpactOfRestatementOnEarningsPerShareAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact of Restatement on Earnings Per Share, Basic (Deprecated 2020-01-31) `us-gaap:ImpactOfRestatementOnEarningsPerShareBasic`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact of Restatement on Earnings Per Share, Diluted (Deprecated 2020-01-31) `us-gaap:ImpactOfRestatementOnEarningsPerShareDiluted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact of Restatement on Opening Retained Earnings, before Tax (Deprecated 2020-01-31) `us-gaap:ImpactOfRestatementOnOpeningRetainedEarningsBeforeTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact of Restatement on Opening Retained Earnings, Net of Tax (Deprecated 2020-01-31) `us-gaap:ImpactOfRestatementOnOpeningRetainedEarningsNetOfTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Impact on Earnings and Financing Needs Resulting from Inability to Meet Oil and Gas Delivery Commitments (Deprecated 2019-01-31) `us-gaap:ImpactOnEarningsAndFinancingNeedsResultingFromInabilityToMeetOilAndGasDeliveryCommitments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items (Deprecated 2019-01-31) `us-gaap:IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciple`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Basic Share (Deprecated 2019-01-31) `us-gaap:IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciplePerBasicShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossBeforeExtraordinaryItemsAndCumulativeEffectOfChangeInAccountingPrinciplePerDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) before Gain (Loss) on Sale of Properties (Deprecated 2020-01-31) `us-gaap:IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) before Gain (Loss) on Sale of Properties [Abstract] (Deprecated 2020-01-31) `us-gaap:IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChangesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, before Tax, Per Basic Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsBeforeTaxPerBasicShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, before Tax, Per Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsBeforeTaxPerDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Basic and Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerBasicAndDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Basic Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerBasicShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Outstanding General Partnership Unit (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerOutstandingGeneralPartnershipUnit1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Outstanding Limited Partnership and General Partnership Unit, Basic (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Outstanding Limited Partnership Unit, Basic (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerOutstandingLimitedPartnershipUnitBasic`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Net of Tax, Per Outstanding Limited Partnership Unit, Diluted (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Tax Effect, Per Basic Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsTaxEffectPerBasicShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Extraordinary Items, Tax Effect, Per Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromExtraordinaryItemsTaxEffectPerDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Net of Tax, Per Outstanding Limited Partnership Unit, Diluted (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsNetOfTaxPerOutstandingLimitedPartnershipUnitDiluted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Basic and Diluted Share (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsPerBasicAndDilutedShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Outstanding General Partnership Unit, Net of Tax (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsPerOutstandingGeneralPartnershipUnitNetOfTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Outstanding Limited Partnership and General Partnership Unit, Basic, Net of Tax (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasic`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Outstanding Limited Partnership and General Partnership Unit, Basic and Diluted, Net of Tax (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsPerOutstandingLimitedPartnershipAndGeneralPartnershipUnitBasicAndDiluted`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income (Loss) from Operations before Extraordinary Items, Per Outstanding Limited Partnership Unit, Basic, Net of Tax (Deprecated 2019-01-31) `us-gaap:IncomeLossFromOperationsBeforeExtraordinaryItemsPerOutstandingLimitedPartnershipUnitBasicNetOfTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Income Tax Expense (Benefit), Extraordinary Items (Deprecated 2019-01-31) `us-gaap:IncomeTaxExpenseBenefitExtraordinaryItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Holdings Additional Information (Deprecated 2020-01-31) `us-gaap:InvestmentHoldingsAdditionalInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Holdings, Other than Securities, Additional Information (Deprecated 2020-01-31) `us-gaap:InvestmentHoldingsOtherThanSecuritiesAdditionalInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Investment Additional Information (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedInvestmentAdditionalInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Loaned for Short Sales, at Fair Value (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedLoanedForShortSalesAtFairValue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, on Loan [Fixed List] (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedOnLoanFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Open Put or Call Option [true false] (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedOpenPutOrCallOptionFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Other than Security, Investment Not Readily Marketable [true false] (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedOtherThanSecuritiesInvestmentNotReadilyMarketableFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Restricted, Carrying Value Per Unit at Date of Balance Sheet (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedRestrictedCarryingValuePerUnitAtDateOfBalanceSheet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Restricted Investment [Fixed List] (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedRestrictedInvestmentFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Subject to Option, Balance, Other Measure (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedSubjectToOptionBalanceOtherMeasure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Subject to Option [true false] (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedSubjectToOptionFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Subject to Option, Nature of Contract (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedSubjectToOptionNatureOfContract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Unrestricted, Carrying Value Per Unit at Date of Purchase Price Agreement (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedUnrestrictedCarryingValuePerUnitAtDateOfPurchasePriceAgreement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Owned, Unrestricted, Carrying Value Per Unit at Date When Enforceable Right to Acquire was Obtained (Deprecated 2020-01-31) `us-gaap:InvestmentOwnedUnrestrictedCarryingValuePerUnitAtDateWhenEnforceableRightToAcquireWasObtained`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Additional Information (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedAdditionalInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Balance, Other Measure (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedBalanceOtherMeasure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Restricted, Acquisition Date (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedRestrictedAcquisitionDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Restricted, Carrying Value Per Unit at Date of Balance Sheet (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedRestrictedCarryingValuePerUnitAtDateOfBalanceSheet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Restricted, Cost (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedRestrictedCost`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Restricted Investment [Fixed List] (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedRestrictedInvestmentFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Unrestricted, Carrying Value Per Unit at Date of Purchase Price Agreement (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedUnrestrictedCarryingValuePerUnitAtDateOfPurchasePriceAgreement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investment Sold, Not yet Purchased, Unrestricted, Carrying Value Per Unit at Date When Enforceable Right to Acquire was Obtained (Deprecated 2020-01-31) `us-gaap:InvestmentSoldNotYetPurchasedUnrestrictedCarryingValuePerUnitAtDateWhenEnforceableRightToAcquireWasObtained`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments by Consolidated and Nonconsolidated Entities [Axis] (Deprecated 2021-01-31) `us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntitiesAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments by Consolidated and Nonconsolidated Entities [Domain] (Deprecated 2021-01-31) `us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntitiesDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments in and Advances to Affiliates, Balance, Contracts (Deprecated 2020-01-31) `us-gaap:InvestmentsInAndAdvancesToAffiliatesBalanceContracts1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments in and Advances to Affiliates, Balance, Other Measure (Deprecated 2020-01-31) `us-gaap:InvestmentsInAndAdvancesToAffiliatesBalanceOtherMeasure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments in and Advances to Affiliates, Dividend or Interest, Other (Deprecated 2020-01-31) `us-gaap:InvestmentsInAndAdvancesToAffiliatesDividendOrInterestOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Investments in and Advance to Affiliate, Noncash Dividend [true false] (Deprecated 2020-01-31) `us-gaap:InvestmentsInAndAdvancesToAffiliatesNoncashDividendsFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Item Effected [Line Items] (Deprecated 2021-01-31) `us-gaap:ItemEffectedLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Items Included in Consolidated Statement of Financial Condition (Deprecated 2019-01-31) `us-gaap:ItemsIncludedInConsolidatedStatementOfFinancialCondition`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Items Not Included in Consolidated Statement of Financial Condition (Deprecated 2019-01-31) `us-gaap:ItemsNotIncludedInConsolidatedStatementOfFinancialCondition`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Items Not Included in Consolidated Statement of Financial Condition [Abstract] (Deprecated 2019-01-31) `us-gaap:ItemsNotIncludedInConsolidatedStatementOfFinancialConditionAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Items to Reconcile Net Capital to Net Capital as Reported in Entity's Part II Unaudited FOCUS Report, Net (Deprecated 2019-01-31) `us-gaap:ItemsToReconcileNetCapitalToNetCapitalAsReportedInEntitysPartIIUnauditedFOCUSReportNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Lease Arrangement, Type [Axis] (Deprecated 2020-01-31) `us-gaap:LeaseArrangementTypeAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Lease Arrangement, Type [Domain] (Deprecated 2020-01-31) `us-gaap:LeaseArrangementTypeDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Leases Receivable, Gross, Commercial, Lease Financing (Deprecated 2019-01-31) `us-gaap:LeasesReceivableCommercialLeaseFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Liabilities for Long-term Contracts or Programs [Abstract] (Deprecated 2020-01-31) `us-gaap:LiabilitiesForLongTermContractsOrProgramsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Liability for Future Policy Benefits, Description (Deprecated 2019-01-31) `us-gaap:LiabilityForFuturePolicyBenefitsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Liability for Policyholder Contract Deposits, Interest Rate Assumption, Deferred Annuity (Deprecated 2019-01-31) `us-gaap:LiabilityForPolicyholderContractDepositsInterestRateAssumptionDeferredAnnuity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Line Item for Gain (Loss) on Price Risk Fair Value Hedge Derivative in Financial Statements (Deprecated 2020-01-31) `us-gaap:LineItemForGainLossOnPriceRiskFairValueHedgeDerivativeInFinancialStatements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Line of Credit Facility, Increase (Decrease) for Period, Description (Deprecated 2020-01-31) `us-gaap:LineOfCreditFacilityIncreaseDecreaseForPeriodDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Liquidation Basis of Accounting [Member] (Deprecated 2019-01-31) `us-gaap:LiquidationBasisOfAccountingMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Commercial, Governments (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableCommercialGovernments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Commitment Fee Policy (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableCommitmentFeePolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Construction (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerConstruction`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Home Equity (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerHomeEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Installment and Revolving (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerInstallmentAndRevolving`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Installment and Revolving [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerInstallmentAndRevolvingAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Installment, Durable Goods (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerInstallmentDurableGoods`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Installment, Other (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerInstallmentOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Installment, Student (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerInstallmentStudent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Lease Financing (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerLeaseFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Mortgage (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerMortgage`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Other (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Real Estate (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerRealEstate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Real Estate [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerRealEstateAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerRevolvingCreditCard`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Gross, Consumer, Revolving, Other (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableConsumerRevolvingOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Description (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Other Information (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableOtherInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans and Leases Receivable, Valuation, Policy [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:LoansAndLeasesReceivableValuationPolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Acquisition (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialAcquisition`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Agricultural (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialAgricultural`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial and Industrial (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialAndIndustrial`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Construction (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialConstruction`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Development (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialDevelopment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Financial and Agricultural (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialFinancialAndAgricultural`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Financial and Agricultural [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialFinancialAndAgriculturalAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Financial Institutions (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialFinancialInstitutions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Mortgage (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialMortgage`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Real Estate (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialRealEstate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Real Estate [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialRealEstateAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Commercial, Trade Financing (Deprecated 2019-01-31) `us-gaap:LoansReceivableCommercialTradeFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Commercial and Industrial (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupCommercialAndIndustrial`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Commercial, Real Estate (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupCommercialRealEstate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer, Credit Card (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumerCreditCard`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer, Home Equity (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumerHomeEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer, Student (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupConsumerStudent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Mortgage (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupMortgage`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Other (Deprecated 2019-01-31) `us-gaap:LoansReceivableHeldForSaleNetNotPartOfDisposalGroupOther`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Gross, Mortgage Warehouse Lending (Deprecated 2019-01-31) `us-gaap:LoansReceivableMortgageWarehouseLending`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Net (Deprecated 2019-01-31) `us-gaap:LoansReceivableNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Loans Receivable, Net [Abstract] (Deprecated 2019-01-31) `us-gaap:LoansReceivableNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Long-Duration Contracts, Assumptions by Product and Guarantee, Description of Assumption (Deprecated 2019-01-31) `us-gaap:LongDurationContractsAssumptionsByProductAndGuaranteeDescriptionOfAssumption`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Malpractice Insurance, Name of Captive Insurer (Deprecated 2021-01-31) `us-gaap:MalpracticeInsuranceNameOfCaptiveInsurer`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Market Value of Stock Dividends Outstanding over Thirty Days (Deprecated 2019-01-31) `us-gaap:MarketValueOfStockDividendsOutstandingOverThirtyDays`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Marketable Securities, Realized Loss, Other than Temporary Impairments, Description (Deprecated 2019-01-31) `us-gaap:MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Material Nonrecurring Reinsurance Transactions (Deprecated 2020-01-31) `us-gaap:MaterialNonrecurringReinsuranceTransactions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Member of Group Filing Consolidated Return, Policy [Policy Text Block] (Deprecated 2020-01-31) `us-gaap:MemberOfGroupFilingConsolidatedReturnPolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Collective-Bargaining Arrangement, Percentage of Contributions Required for Multiple Collective-Bargaining Arrangements (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanCollectiveBargainingArrangementPercentageOfContributionsRequiredForMultipleCollectiveBargainingArrangements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Collective-Bargaining Arrangement, Required Percentage of Contributions (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanCollectiveBargainingArrangementRequiredPercentageOfContributions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Contributions by Employer (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanContributionsByEmployer`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Individually Insignificant Multiemployer Plans [Member] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanIndividuallyInsignificantMultiemployerPlansMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan Name [Axis] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanNameAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan Name [Domain] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanNameDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan Number (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanNumber`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Plan Information, Available [Member] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanPlanInformationAvailableMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Plan Information [Axis] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanPlanInformationAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Plan Information [Domain] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanPlanInformationDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan, Plan Information, Not Available [Member] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanPlanInformationNotAvailableMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plan Type [Axis] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlanTypeAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans [Abstract] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Accumulated Benefit Obligation (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansAccumulatedBenefitObligation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Certified Zone Status [Fixed List] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCertifiedZoneStatus`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Certified Zone Status, Date (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCertifiedZoneStatusDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Certified Zone Status, Extended Amortization Provisions [true false] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCertifiedZoneStatusExtendedAmortizationProvisions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCollectiveBargainingArrangementExpirationDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date, First (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCollectiveBargainingArrangementExpirationDateFirst`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Collective-Bargaining Arrangement, Expiration Date, Last (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCollectiveBargainingArrangementExpirationDateLast`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Employer's Participants (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCollectiveBargainingArrangementPercentageOfEmployersParticipants`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Collective-Bargaining Arrangement, Percentage of Participants (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansCollectiveBargainingArrangementPercentageOfParticipants`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Funded Status [Fixed List] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansFundedStatus`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Funding Improvement Plan and Rehabilitation Plan [Fixed List] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansFundingImprovementPlanAndRehabilitationPlan`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Information Not Available (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansInformationNotAvailable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Minimum Contribution (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansMinimumContribution`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Pension [Member] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansPensionMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Period Contributions, Significance of Contributions [true false] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansPeriodContributionsSignificanceOfContributions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Plan Assets (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansPlanAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Plan Contributions (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansPlanContributions1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Postretirement Benefit [Member] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansPostretirementBenefitMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Report Date (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansReportDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans, Surcharge [Fixed List] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansSurcharge`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Multiemployer Plans Type [Domain] (Deprecated 2020-01-31) `us-gaap:MultiemployerPlansTypeDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Nature of Error [Domain] (Deprecated 2021-01-31) `us-gaap:NatureOfErrorDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Nature, Purpose and Effect of Reinsurance Transactions (Deprecated 2020-01-31) `us-gaap:NaturePurposeAndEffectOfReinsuranceTransactions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Assets, Adjusted Balance (Deprecated 2020-01-31) `us-gaap:NetAssetsAdjustedBalance`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Assets, Adjusted Balance [Abstract] (Deprecated 2020-01-31) `us-gaap:NetAssetsAdjustedBalanceAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital [Abstract] (Deprecated 2019-01-31) `us-gaap:NetCapitalAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital as Reported in Entity's Part II Unaudited FOCUS Report (Deprecated 2019-01-31) `us-gaap:NetCapitalAsReportedInEntitysPartIIUnauditedFOCUSReport`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital before Haircuts on Securities Positions (Deprecated 2019-01-31) `us-gaap:NetCapitalBeforeHaircutsOnSecuritiesPositions`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital before Haircuts on Securities Positions [Abstract] (Deprecated 2019-01-31) `us-gaap:NetCapitalBeforeHaircutsOnSecuritiesPositionsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital in Excess of Four Percent of Debit Items (Deprecated 2019-01-31) `us-gaap:NetCapitalInExcessOfFourPercentOfDebitItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Capital, Reconciliation with Entity's Computation [Abstract] (Deprecated 2019-01-31) `us-gaap:NetCapitalReconciliationWithEntitysComputationAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Investment in Lease, Not Past Due (Deprecated 2021-01-31) `us-gaap:NetInvestmentInLeaseNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Investment in Lease, Past Due (Deprecated 2021-01-31) `us-gaap:NetInvestmentInLeasePastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Net Productive and Dry Wells Drilled Disclosure [Table Text Block] (Deprecated 2019-01-31) `us-gaap:NetProductiveAndDryWellsDrilledDisclosureTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Principles, Early Adoption [Domain] (Deprecated 2021-01-31) `us-gaap:NewAccountingPrinciplesEarlyAdoptionMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Early Adoption [Axis] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementEarlyAdoptionAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Early Adoption, Effect [Member] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementEarlyAdoptionEffectMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Early Adoption [Line Items] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementEarlyAdoptionLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Early Adoption [Table] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementEarlyAdoptionTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Early Adoption [Table Text Block] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementEarlyAdoptionTableTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Adjustments for New Accounting Pronouncement [Member] (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Description of Financial Statement Line Items, Prospective Transition (Deprecated 2021-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleDescriptionOfFinancialStatementLineItemsProspectiveTransition`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Description of Transition Method (Deprecated 2019-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleDescriptionOfTransitionMethod`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Basic Earnings Per Share (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnBasicEarningsPerShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted Earnings Per Share (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnDilutedEarningsPerShare`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnOperatingResults`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Change in Accounting Principle, Effect on Financial Statement [Fixed List] (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOnFinancialStatementsFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Retrospective Adjustments [Abstract] (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleRetrospectiveAdjustmentsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement or Change in Accounting Principle, Retrospective Application Impracticable (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementOrChangeInAccountingPrincipleRetrospectiveApplicationImpracticable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
New Accounting Pronouncement, Transition Guidance Not Significant or Not Practical (Deprecated 2020-01-31) `us-gaap:NewAccountingPronouncementTransitionGuidanceNotSignificantOrNotPractical`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Nonallowable Assets (Deprecated 2019-01-31) `us-gaap:NonallowableAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Nonallowable Assets [Abstract] (Deprecated 2019-01-31) `us-gaap:NonallowableAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Non-arrangement Transactions [Member] (Deprecated 2019-01-31) `us-gaap:NonarrangementTransactionsMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Noninterest Expense Distribution and Servicing Fees (Deprecated 2019-01-31) `us-gaap:NoninterestExpenseDistributionAndServicingFees`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Oil and Gas Delivery Commitments and Contracts Additional Information [Abstract] (Deprecated 2019-01-31) `us-gaap:OilAndGasDeliveryCommitmentsAndContractsAdditionalInformationAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Oil and Gas Delivery Commitments and Contracts, Reserves or Supplies Subject to Priorities or Curtailments (Deprecated 2019-01-31) `us-gaap:OilAndGasDeliveryCommitmentsAndContractsReservesOrSuppliesSubjectToPrioritiesOrCurtailments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Operating Cycle (Deprecated 2020-01-31) `us-gaap:OperatingCycle`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Assets Not Allowed (Deprecated 2019-01-31) `us-gaap:OtherAssetsNotAllowed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments and Tax, Noncontrolling Interest (Deprecated 2019-01-31) `us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsAndTaxNoncontrollingInterest`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, before Tax, Noncontrolling Interest (Deprecated 2019-01-31) `us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsBeforeTaxNoncontrollingInterest`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax, Noncontrolling Interest (Deprecated 2019-01-31) `us-gaap:OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseAfterAdjustmentsTaxNoncontrollingInterest`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Deductions and Charges (Deprecated 2019-01-31) `us-gaap:OtherDeductionsAndCharges`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Deductions or Allowable Credits (Deprecated 2019-01-31) `us-gaap:OtherDeductionsOrAllowableCredits`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Extraordinary Gain (Loss) (Deprecated 2019-01-31) `us-gaap:OtherExtraordinaryGainLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Significant Aspects of Oil and Gas Delivery Commitments (Deprecated 2019-01-31) `us-gaap:OtherSignificantAspectsOfOilAndGasDeliveryCommitments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Other Unrecorded Amounts (Deprecated 2019-01-31) `us-gaap:OtherUnrecordedAmounts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Partners' Capital, Adjusted Balance (Deprecated 2020-01-31) `us-gaap:PartnersCapitalAdjustedBalance1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Accounts Payable (Deprecated 2021-01-31) `us-gaap:PostconfirmationAccountsPayable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Accrued Liabilities (Deprecated 2021-01-31) `us-gaap:PostconfirmationAccruedLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Accumulated Depreciation and Amortization (Deprecated 2021-01-31) `us-gaap:PostconfirmationAccumulatedDepreciationAndAmortization`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Accumulated Other Comprehensive Income (Loss) (Deprecated 2021-01-31) `us-gaap:PostconfirmationAccumulatedOtherComprehensiveIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Additional Paid-in Capital (Deprecated 2021-01-31) `us-gaap:PostconfirmationAdditionalPaidInCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Amortizable Intangible Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationAmortizableIntangibleAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Buildings and Improvements (Deprecated 2021-01-31) `us-gaap:PostconfirmationBuildingsAndImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Capital Lease Obligations, Noncurrent (Deprecated 2021-01-31) `us-gaap:PostconfirmationCapitalLeaseObligationsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Cash and Cash Equivalents (Deprecated 2021-01-31) `us-gaap:PostconfirmationCashAndCashEquivalents`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Common Stock (Deprecated 2021-01-31) `us-gaap:PostconfirmationCommonStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Liabilities (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Maturities of Capital Lease Obligations (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentMaturitiesOfCapitalLeaseObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Current Maturities of Long-term Debt (Deprecated 2021-01-31) `us-gaap:PostconfirmationCurrentMaturitiesOfLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Debtor-in-Possession Financing (Deprecated 2021-01-31) `us-gaap:PostconfirmationDebtorInPossessionFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Debt Issuance Costs (Deprecated 2021-01-31) `us-gaap:PostconfirmationDeferredFinancingCosts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Deferred Income Tax Assets, Current (Deprecated 2021-01-31) `us-gaap:PostconfirmationDeferredIncomeTaxAssetsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Deferred Income Tax Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:PostconfirmationDeferredIncomeTaxAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Deferred Income Tax Liabilities, Current (Deprecated 2021-01-31) `us-gaap:PostconfirmationDeferredIncomeTaxLiabilitiesCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Deferred Income Tax Liabilities, Noncurrent (Deprecated 2021-01-31) `us-gaap:PostconfirmationDeferredIncomeTaxLiabilitiesNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Equipment (Deprecated 2021-01-31) `us-gaap:PostconfirmationEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Furniture and Fixtures (Deprecated 2021-01-31) `us-gaap:PostconfirmationFurnitureAndFixtures`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Goodwill (Deprecated 2021-01-31) `us-gaap:PostconfirmationGoodwill`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Inventories (Deprecated 2021-01-31) `us-gaap:PostconfirmationInventories`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Investments (Deprecated 2021-01-31) `us-gaap:PostconfirmationInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Land (Deprecated 2021-01-31) `us-gaap:PostconfirmationLand`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Leasehold Improvements (Deprecated 2021-01-31) `us-gaap:PostconfirmationLeaseholdImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Liabilities (Deprecated 2021-01-31) `us-gaap:PostconfirmationLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Liabilities and Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:PostconfirmationLiabilitiesAndStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Liabilities and Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationLiabilitiesAndStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Liabilities Subject to Compromise (Deprecated 2021-01-31) `us-gaap:PostconfirmationLiabilitiesSubjectToCompromise`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Long-term Debt (Deprecated 2021-01-31) `us-gaap:PostconfirmationLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Long-term Debt [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationLongTermDebtAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Nonamortizable Intangible Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationNonamortizableIntangibleAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Noncurrent Other Obligations (Deprecated 2021-01-31) `us-gaap:PostconfirmationNoncurrentOtherObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Current Liabilities (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Long-term Debt (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Noncurrent Obligations (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherNoncurrentObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Noncurrent Obligations [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherNoncurrentObligationsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Postretirement Obligations (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherPostretirementObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Other Property and Equipment (Deprecated 2021-01-31) `us-gaap:PostconfirmationOtherPropertyAndEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Pension Obligations (Deprecated 2021-01-31) `us-gaap:PostconfirmationPensionObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Postconfirmation Credit Facility (Deprecated 2021-01-31) `us-gaap:PostconfirmationPostconfirmationCreditFacility`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Preferred and Common Stock Held in Treasury (Deprecated 2021-01-31) `us-gaap:PostconfirmationPreferredAndCommonStockHeldInTreasury`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Preferred Stock (Deprecated 2021-01-31) `us-gaap:PostconfirmationPreferredStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Prepaid and Other Current Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationPrepaidAndOtherCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Property and Equipment, Net (Deprecated 2021-01-31) `us-gaap:PostconfirmationPropertyAndEquipmentNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Property and Equipment, Net [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationPropertyAndEquipmentNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Property under Capital Lease Arrangements (Deprecated 2021-01-31) `us-gaap:PostconfirmationPropertyUnderCapitalLeaseArrangements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Receivables, Net (Deprecated 2021-01-31) `us-gaap:PostconfirmationReceivablesNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Reorganization Value in Excess of Amounts Allocable to Identifiable Assets (Deprecated 2021-01-31) `us-gaap:PostconfirmationReorganizationValueInExcessOfAmountsAllocableToIdentifiableAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Restricted Cash and Cash Equivalents, Current (Deprecated 2021-01-31) `us-gaap:PostconfirmationRestrictedCashAndCashEquivalentsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Restricted Cash and Cash Equivalents, Noncurrent (Deprecated 2021-01-31) `us-gaap:PostconfirmationRestrictedCashAndCashEquivalentsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Retained Earnings (Deficit) (Deprecated 2021-01-31) `us-gaap:PostconfirmationRetainedEarningsDeficit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Short-term Borrowings (Deprecated 2021-01-31) `us-gaap:PostconfirmationShortTermBorrowings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Short-term Investments (Deprecated 2021-01-31) `us-gaap:PostconfirmationShortTermInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:PostconfirmationStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Postconfirmation, Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:PostconfirmationStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Accounts Payable (Deprecated 2021-01-31) `us-gaap:PreconfirmationAccountsPayable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Accrued Liabilities (Deprecated 2021-01-31) `us-gaap:PreconfirmationAccruedLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Accumulated Depreciation and Amortization (Deprecated 2021-01-31) `us-gaap:PreconfirmationAccumulatedDepreciationAndAmortization`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Accumulated Other Comprehensive Income (Loss) (Deprecated 2021-01-31) `us-gaap:PreconfirmationAccumulatedOtherComprehensiveIncomeLoss`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Additional Paid-in Capital (Deprecated 2021-01-31) `us-gaap:PreconfirmationAdditionalPaidInCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Amortizable Intangible Assets, Net (Deprecated 2021-01-31) `us-gaap:PreconfirmationAmortizableIntangibleAssetsNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Buildings and Improvements (Deprecated 2021-01-31) `us-gaap:PreconfirmationBuildingsAndImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Capital Lease Obligations, Noncurrent (Deprecated 2021-01-31) `us-gaap:PreconfirmationCapitalLeaseObligationsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Cash and Cash Equivalents (Deprecated 2021-01-31) `us-gaap:PreconfirmationCashAndCashEquivalents`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Common Stock (Deprecated 2021-01-31) `us-gaap:PreconfirmationCommonStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Liabilities (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Maturities of Capital Lease Obligations (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentMaturitiesOfCapitalLeaseObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Current Maturities of Long-term Debt (Deprecated 2021-01-31) `us-gaap:PreconfirmationCurrentMaturitiesOfLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Debtor-in-Possession Financing (Deprecated 2021-01-31) `us-gaap:PreconfirmationDebtorInPossessionFinancing`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Debt Issuance Costs (Deprecated 2021-01-31) `us-gaap:PreconfirmationDeferredFinancingCosts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Deferred Income Tax Assets, Current (Deprecated 2021-01-31) `us-gaap:PreconfirmationDeferredIncomeTaxAssetsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Deferred Income Tax Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:PreconfirmationDeferredIncomeTaxAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Deferred Income Tax Liabilities, Current (Deprecated 2021-01-31) `us-gaap:PreconfirmationDeferredIncomeTaxLiabilitiesCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Deferred Income Tax Liabilities, Noncurrent (Deprecated 2021-01-31) `us-gaap:PreconfirmationDeferredIncomeTaxLiabilitiesNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Equipment (Deprecated 2021-01-31) `us-gaap:PreconfirmationEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Furniture and Fixtures (Deprecated 2021-01-31) `us-gaap:PreconfirmationFurnitureAndFixtures`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Goodwill (Deprecated 2021-01-31) `us-gaap:PreconfirmationGoodwill`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Inventories (Deprecated 2021-01-31) `us-gaap:PreconfirmationInventories`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Investments (Deprecated 2021-01-31) `us-gaap:PreconfirmationInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Land (Deprecated 2021-01-31) `us-gaap:PreconfirmationLand`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Leasehold Improvements (Deprecated 2021-01-31) `us-gaap:PreconfirmationLeaseholdImprovements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Liabilities (Deprecated 2021-01-31) `us-gaap:PreconfirmationLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Liabilities [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Liabilities and Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:PreconfirmationLiabilitiesAndStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Liabilities and Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationLiabilitiesAndStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Liabilities Subject to Compromise (Deprecated 2021-01-31) `us-gaap:PreconfirmationLiabilitiesSubjectToCompromise`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Long-term Debt (Deprecated 2021-01-31) `us-gaap:PreconfirmationLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Long-term Debt [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationLongTermDebtAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Nonamortizable Intangible Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationNonamortizableIntangibleAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Noncurrent Other Obligations (Deprecated 2021-01-31) `us-gaap:PreconfirmationNoncurrentOtherObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Assets [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Assets, Noncurrent (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Current Liabilities (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherCurrentLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Long-term Debt (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherLongTermDebt`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Noncurrent Obligations (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherNoncurrentObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Noncurrent Obligations [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherNoncurrentObligationsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Postretirement Obligations (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherPostretirementObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Other Property and Equipment (Deprecated 2021-01-31) `us-gaap:PreconfirmationOtherPropertyAndEquipment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Pension Obligations (Deprecated 2021-01-31) `us-gaap:PreconfirmationPensionObligations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Postconfirmation Credit Facility (Deprecated 2021-01-31) `us-gaap:PreconfirmationPostconfirmationCreditFacility`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Preferred and Common Stock Held in Treasury (Deprecated 2021-01-31) `us-gaap:PreconfirmationPreferredAndCommonStockHeldInTreasury`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Preferred Stock (Deprecated 2021-01-31) `us-gaap:PreconfirmationPreferredStock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Prepaid and Other Current Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationPrepaidAndOtherCurrentAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Property and Equipment, Net (Deprecated 2021-01-31) `us-gaap:PreconfirmationPropertyAndEquipmentNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Property and Equipment, Net [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationPropertyAndEquipmentNetAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Property under Capital Lease Arrangements (Deprecated 2021-01-31) `us-gaap:PreconfirmationPropertyUnderCapitalLeaseArrangements`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Receivables, Net (Deprecated 2021-01-31) `us-gaap:PreconfirmationReceivablesNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Reorganization Value in Excess of Amounts Allocable to Identifiable Assets (Deprecated 2021-01-31) `us-gaap:PreconfirmationReorganizationValueInExcessOfAmountsAllocableToIdentifiableAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Restricted Cash and Cash Equivalents, Current (Deprecated 2021-01-31) `us-gaap:PreconfirmationRestrictedCashAndCashEquivalentsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Restricted Cash and Cash Equivalents, Noncurrent (Deprecated 2021-01-31) `us-gaap:PreconfirmationRestrictedCashAndCashEquivalentsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Retained Earnings (Deficit) (Deprecated 2021-01-31) `us-gaap:PreconfirmationRetainedEarningsDeficit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Short-term Borrowings (Deprecated 2021-01-31) `us-gaap:PreconfirmationShortTermBorrowings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Short-term Investments (Deprecated 2021-01-31) `us-gaap:PreconfirmationShortTermInvestments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Stockholders' Equity (Deprecated 2021-01-31) `us-gaap:PreconfirmationStockholdersEquity`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Preconfirmation, Stockholders' Equity [Abstract] (Deprecated 2021-01-31) `us-gaap:PreconfirmationStockholdersEquityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Predecessor [Member] (Deprecated 2019-01-31) `us-gaap:PredecessorMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Premiums Receivable, Allowance for Doubtful Accounts, Additions for Charges to Expense (Deprecated 2019-01-31) `us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsAdditionsForChargesToExpense`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Pressure Maintenance Operations (Deprecated 2019-01-31) `us-gaap:PressureMaintenanceOperations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Previous Accounting Guidance [Member] (Deprecated 2021-01-31) `us-gaap:PreviousAccountingGuidanceMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Principal Assumptions Where Average Cost Per Unit is Used (Deprecated 2020-01-31) `us-gaap:PrincipalAssumptionsWhereAverageCostPerUnitIsUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Prior Inability to Deliver or Meet Oil and Gas Delivery Commitments and Contracts (Deprecated 2019-01-31) `us-gaap:PriorInabilityToDeliverOrMeetOilAndGasDeliveryCommitmentsAndContracts`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Production Type [Domain] (Deprecated 2019-01-31) `us-gaap:ProductionTypeDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Productive Gas Wells, Number of Wells with Multiple Completions, Gross (Deprecated 2019-01-31) `us-gaap:ProductiveGasWellsNumberOfWellsWithMultipleCompletionsGross`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Productive Gas Wells, Number of Wells with Multiple Completions, Net (Deprecated 2019-01-31) `us-gaap:ProductiveGasWellsNumberOfWellsWithMultipleCompletionsNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Productive Wells and Acreage Disclosure [Text Block] (Deprecated 2019-01-31) `us-gaap:ProductiveWellsAndAcreageDisclosureTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Prospective Adoption of New Accounting Pronouncements [Abstract] (Deprecated 2021-01-31) `us-gaap:ProspectiveAdoptionOfNewAccountingPronouncementsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Prospective Adoption of New Accounting Pronouncements [Axis] (Deprecated 2021-01-31) `us-gaap:ProspectiveAdoptionOfNewAccountingPronouncementsAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Prospective Adoption of New Accounting Pronouncements [Table] (Deprecated 2021-01-31) `us-gaap:ProspectiveAdoptionOfNewAccountingPronouncementsTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Quantifying Misstatement in Current Year Financial Statements, Amount (Deprecated 2021-01-31) `us-gaap:QuantifyingMisstatementInCurrentYearFinancialStatementsAmount`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Nature of Error [Axis] (Deprecated 2021-01-31) `us-gaap:QuantifyingMisstatementInCurrentYearFinancialStatementsByNatureOfErrorAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Quantifying Misstatement in Current Year Financial Statements [Line Items] (Deprecated 2021-01-31) `us-gaap:QuantifyingMisstatementInCurrentYearFinancialStatementsLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Quantifying Prior Year Misstatements Corrected in Current Year Financial Statements [Abstract] (Deprecated 2021-01-31) `us-gaap:QuantifyingPriorYearMisstatementsCorrectedInCurrentYearFinancialStatementsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results (Deprecated 2020-01-31) `us-gaap:QuarterlyFinancialInformationQuarterlyChargesAndCreditsAmountReconcilingToPreviouslyReportedResults`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Receivables, Change in Method of Calculating Impairment, Recorded Investment (Deprecated 2019-01-31) `us-gaap:ReceivablesChangeInMethodOfCalculatingImpairmentRecordedInvestment`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Receivables Held-for-sale, Determination, Policy [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:ReceivablesHeldForSaleDeterminationPolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Receivables Held-for-sale, Lower of Cost or Fair Value, Policy [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:ReceivablesHeldForSaleLowerOfCostOrFairValuePolicy`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Receivables Held-for-sale, Policy [Abstract] (Deprecated 2019-01-31) `us-gaap:ReceivablesHeldForSalePolicyAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reclassification to Unappropriated Retained Earnings (Deprecated 2019-01-31) `us-gaap:ReclassificationToUnappropriatedRetainedEarnings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reinsurance Recoverable, Not Past Due (Deprecated 2021-01-31) `us-gaap:ReinsuranceRecoverableNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reinsurance Recoverable, Past Due (Deprecated 2021-01-31) `us-gaap:ReinsuranceRecoverablePastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Resale Agreements, Additional Collateral Requirements for Securities or Assets to be Resold (Deprecated 2020-01-31) `us-gaap:ResaleAgreementsAdditionalCollateralRequirementsForSecuritiesOrAssetsToBeResold`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement of Prior Year Income [Abstract] (Deprecated 2020-01-31) `us-gaap:RestatementOfPriorYearIncomeAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement of Prior Year Income, Gross (Deprecated 2020-01-31) `us-gaap:RestatementOfPriorYearIncomeGross`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement of Prior Year Income, Net of Tax (Deprecated 2020-01-31) `us-gaap:RestatementOfPriorYearIncomeNetOfTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement of Prior Year Income, Net of Tax [Abstract] (Deprecated 2020-01-31) `us-gaap:RestatementOfPriorYearIncomeNetOfTaxAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement of Prior Year Income, Tax Effects (Deprecated 2020-01-31) `us-gaap:RestatementOfPriorYearIncomeTaxEffects`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restatement to Prior Year Income [Table Text Block] (Deprecated 2021-01-31) `us-gaap:RestatementToPriorYearIncomeTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Cash and Cash Equivalent Item, Agreement (Deprecated 2020-01-31) `us-gaap:RestrictedCashAndCashEquivalentItemAgreement`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Exempt from Registration, at Fair Value (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsExemptFromRegistrationAtFairValue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Exempt from Registration Note [Abstract] (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsExemptFromRegistrationNoteAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Exempt from Registration, Percent of Net Assets (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsExemptFromRegistrationPercentOfNetAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Not Exempt from Registration, at Fair Value (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsNotExemptFromRegistrationAtFairValue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Not Exempt from Registration Note [Abstract] (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsNotExemptFromRegistrationNoteAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Restricted Investments Not Exempt from Registration, Percent of Net Assets (Deprecated 2020-01-31) `us-gaap:RestrictedInvestmentsNotExemptFromRegistrationPercentOfNetAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Estimated Cost of Major Improvements, Area (Deprecated 2021-01-31) `us-gaap:RetailLandSalesEstimatedCostOfMajorImprovementsArea`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Estimated Cost of Major Improvements, Expenditure Dates (Deprecated 2021-01-31) `us-gaap:RetailLandSalesEstimatedCostOfMajorImprovementsExpenditureDates`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Next Rolling Twelve Months (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableNextRollingTwelveMonths`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sale, Accounts Receivable, to be Collected, Remainder of Fiscal Year (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRemainderOfFiscalYear`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Rolling Maturity [Abstract] (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRollingMaturityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Rolling Year Five (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRollingYearFive`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Rolling Year Four (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRollingYearFour`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Rolling Year Three (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRollingYearThree`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retail Land Sales, Maturity of Accounts Receivable, Rolling Year Two (Deprecated 2021-01-31) `us-gaap:RetailLandSalesMaturityOfAccountsReceivableRollingYearTwo`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Retained Earnings Adjustments [Line Items] (Deprecated 2020-01-31) `us-gaap:RetainedEarningsAdjustmentsLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Revaluation of Assets [Member] (Deprecated 2021-01-31) `us-gaap:RevaluationOfAssetsMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Revaluation of Liabilities [Member] (Deprecated 2021-01-31) `us-gaap:RevaluationOfLiabilitiesMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reverse Repurchase Agreements Segregated under Commodity Exchange Act Regulation (Deprecated 2019-01-31) `us-gaap:ReverseRepurchaseAgreementsSegregatedUnderCommodityExchangeActRegulation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reverse Repurchase Agreements Segregated under Other Regulations (Deprecated 2019-01-31) `us-gaap:ReverseRepurchaseAgreementsSegregatedUnderOtherRegulations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Reverse Repurchase Agreements Segregated under Securities Exchange Commission Regulation (Deprecated 2019-01-31) `us-gaap:ReverseRepurchaseAgreementsSegregatedUnderSecuritiesExchangeCommissionRegulation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Risks Inherent in Servicing Assets and Servicing Liabilities, Fair Value of Instruments Used to Manage Risks (Deprecated 2020-01-31) `us-gaap:RisksInherentInServicingAssetsAndServicingLiabilitiesFairValueOfInstrumentsUsedToManageRisks`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Sales Revenue, Goods, Net [Member] (Deprecated 2019-01-31) `us-gaap:SalesRevenueGoodsNetMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Sales Revenue, Services, Net [Member] (Deprecated 2019-01-31) `us-gaap:SalesRevenueServicesNetMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Sales-type Lease, Net Investment in Lease, Not Past Due (Deprecated 2021-01-31) `us-gaap:SalesTypeLeaseNetInvestmentInLeaseNotPastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Sales-type Lease, Net Investment in Lease, Past Due (Deprecated 2021-01-31) `us-gaap:SalesTypeLeaseNetInvestmentInLeasePastDue`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Credit Losses Related to Financing Receivables, Current and Noncurrent [Table Text Block] (Deprecated 2019-01-31) `us-gaap:ScheduleOfCreditLossesRelatedToFinancingReceivablesCurrentAndNoncurrentTableTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Extraordinary Items [Table Text Block] (Deprecated 2019-01-31) `us-gaap:ScheduleOfExtraordinaryItemsTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Health Care Trust Fund [Abstract] (Deprecated 2021-01-31) `us-gaap:ScheduleOfHealthCareTrustFundAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Prospective Adoption of New Accounting Pronouncements [Table Text Block] (Deprecated 2021-01-31) `us-gaap:ScheduleOfProspectiveAdoptionOfNewAccountingPronouncementsTableTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Quantifying Prior Year Misstatement Corrected in Current Year Financial Statements [Table] (Deprecated 2021-01-31) `us-gaap:ScheduleOfQuantifyingPriorYearMisstatementCorrectedInCurrentYearFinancialStatementsTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Quantifying Prior Year Misstatements Corrected in Current Year Financial Statements [Table Text Block] (Deprecated 2021-01-31) `us-gaap:ScheduleOfQuantifyingPriorYearMisstatementsCorrectedInCurrentYearFinancialStatementsTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule of Retained Earnings Adjustments [Table] (Deprecated 2020-01-31) `us-gaap:ScheduleOfRetainedEarningsAdjustmentsTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Schedule or Description of Weighted Average Discount Rate [Table Text Block] (Deprecated 2019-01-31) `us-gaap:ScheduleOrDescriptionOfWeightedAverageDiscountRateTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Secured Demand Note Deficiency (Deprecated 2019-01-31) `us-gaap:SecuredDemandNoteDeficiency`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Securities Borrowed for which No Value is Paid or Credited (Deprecated 2019-01-31) `us-gaap:SecuritiesBorrowedForWhichNoValueIsPaidOrCredited`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Securities Owned and Pledged as Collateral, Description (Deprecated 2020-01-31) `us-gaap:SecuritiesOwnedAndPledgedAsCollateralDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Securities Owned Not Readily Marketable (Deprecated 2019-01-31) `us-gaap:SecuritiesOwnedNotReadilyMarketable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Securities Segregated under Commodity Exchange Act Regulation (Deprecated 2019-01-31) `us-gaap:SecuritiesSegregatedUnderCommodityExchangeActRegulation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale, Other Gain (Loss) Disclosures on Securitization or Asset-backed Financing Arrangement (Deprecated 2020-01-31) `us-gaap:SecuritizationFinancialAssetForWhichTransferIsAccountedAsSaleOtherGainLossDisclosuresOnSecuritizations`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Share-based Goods and Nonemployee Services Transaction, Modification of Terms, Amount of Changes and Report Lines Affected (Deprecated 2019-01-31) `us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionModificationOfTermsAmountOfChangesAndReportLinesAffected`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Share-based Goods and Nonemployee Services Transaction, Modification of Terms, Number of Vendors Affected (Deprecated 2019-01-31) `us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionModificationOfTermsNumberOfVendorsAffected`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Share-based Goods and Nonemployee Services Transaction, Report Lines Affected (Deprecated 2019-01-31) `us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionReportLinesAffected`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Share-based Goods and Nonemployee Services Transaction, Securities Issued (Deprecated 2019-01-31) `us-gaap:ShareBasedGoodsAndNonemployeeServicesTransactionSecuritiesIssued`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Shareholders' Equity Class [Axis] (Deprecated 2019-01-31) `us-gaap:ShareholdersEquityClassAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Shareholders' Equity [Member] (Deprecated 2019-01-31) `us-gaap:ShareholdersEquityMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Steps Taken to Ensure Oil and Gas Delivery Commitments (Deprecated 2019-01-31) `us-gaap:StepsTakenToEnsureOilAndGasDeliveryCommitments`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Stockholders' Equity Attributable to Parent, Not Allowable for Net Capital (Deprecated 2019-01-31) `us-gaap:StockholdersEquityAttributableToParentNotAllowableForNetCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Adjusted Balance (Deprecated 2020-01-31) `us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Stockholders' Equity Attributable to Parent, Qualified for Net Capital (Deprecated 2019-01-31) `us-gaap:StockholdersEquityQualifiedForNetCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Stockholders' Equity Attributable to Parent, Qualified for Net Capital [Abstract] (Deprecated 2019-01-31) `us-gaap:StockholdersEquityQualifiedForNetCapitalAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Subordinated Borrowings Allowable in Computation of Net Capital (Deprecated 2019-01-31) `us-gaap:SubordinatedBorrowingsAllowableInComputationOfNetCapital`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Successor [Member] (Deprecated 2019-01-31) `us-gaap:SuccessorMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Summary of Investment Holdings Additional Information (Deprecated 2020-01-31) `us-gaap:SummaryOfInvestmentHoldingsAdditionalInformation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Accounting Complete [true false] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017AccountingComplete`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Accounting Complete, Date (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017AccountingCompleteDate`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Decrease in Deferred Tax Liability due to Transition Tax (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017DecreaseInDeferredTaxLiabilityDueToTransitionTax`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Existing Income Tax Expense (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetExistingIncomeTaxExpense`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Existing Income Tax Benefit (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiabilityExistingIncomeTaxBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Deferred Tax Liability, Provisional Income Tax Benefit (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiabilityProvisionalIncomeTaxBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Existing Income Tax Expense (Benefit) (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateExistingIncomeTaxExpenseBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Existing Income Tax Expense (Benefit) [Abstract] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateExistingIncomeTaxExpenseBenefitAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Change in Tax Rate, Provisional Income Tax Expense (Benefit) [Abstract] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefitAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Deferred Tax Liabilities, Provisional Undistributed Foreign Earnings (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingDeferredTaxLiabilitiesProvisionalUndistributedForeignEarnings`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Description (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Existing Income Tax Expense (Benefit) (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingExistingIncomeTaxExpenseBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Existing Income Tax Expense (Benefit) [Abstract] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingExistingIncomeTaxExpenseBenefitAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Existing Undistributed Accumulated Earnings of Foreign Subsidiary (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingExistingUndistributedAccumulatedEarningsOfForeignSubsidiary`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Cumulative Temporary Difference (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalCumulativeTemporaryDifference`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Income Tax Expense (Benefit) [Abstract] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefitAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Provisional Undistributed Accumulated Earnings of Foreign Subsidiary (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalUndistributedAccumulatedEarningsOfForeignSubsidiary`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalIncomeTaxExpense`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiability`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability [Abstract] (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiabilityAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability, Current (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiabilityCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability, Noncurrent (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingTransitionTaxForAccumulatedForeignEarningsProvisionalLiabilityNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Undistributed Accumulated Earnings of Foreign Subsidiary, Existing Unrecognized Deferred Tax Liability (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingUndistributedAccumulatedEarningsOfForeignSubsidiaryExistingUnrecognizedDeferredTaxLiability`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Cuts and Jobs Act, Incomplete Accounting, Undistributed Accumulated Earnings of Foreign Subsidiary, Provisional Unrecognized Deferred Tax Liability (Deprecated 2020-01-31) `us-gaap:TaxCutsAndJobsActOf2017IncompleteAccountingUndistributedAccumulatedEarningsOfForeignSubsidiaryProvisionalUnrecognizedDeferredTaxLiability`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tax Effect of Extraordinary Item, Gain (Loss) (Deprecated 2019-01-31) `us-gaap:TaxEffectOfExtraordinaryItem`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Threshold Period Past Due for Write-off of Financing Receivable (Deprecated 2019-01-31) `us-gaap:ThresholdPeriodPastDueForWriteoffOfFinancingReceivable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Tier Two Risk Based Capital [Abstract] (Deprecated 2020-01-31) `us-gaap:TierTwoRiskBasedCapitalAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Time Sharing Transactions, Description of Activity in Allowance for Uncollectibles (Deprecated 2021-01-31) `us-gaap:TimeSharingTransactionsDescriptionOfActivityInAllowanceForUncollectibles`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Time Sharing Transactions, Description of Activity in Allowance for Uncollectibles on Receivables Sold with Recourse (Deprecated 2021-01-31) `us-gaap:TimeSharingTransactionsDescriptionOfActivityInAllowanceForUncollectiblesOnReceivablesSoldWithRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Time Sharing Transactions Disclosure (Deprecated 2021-01-31) `us-gaap:TimeSharingTransactionsDisclosure`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Trade and Loan Receivables, Method of Accounting for Receivables that Can be Contractually Prepaid, Policy [Policy Text Block] (Deprecated 2019-01-31) `us-gaap:TradeAndLoanReceivablesMethodOfAccountingForReceivablesThatCanBeContractuallyPrepaidPolicyPolicyTextBlock`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Type of Arrangement [Member] (Deprecated 2019-01-31) `us-gaap:TypeOfArrangementDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Types of Foreign Currency Derivatives Used (Deprecated 2020-01-31) `us-gaap:TypesOfForeignCurrencyDerivativesUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Types of Interest Rate Derivatives Used (Deprecated 2020-01-31) `us-gaap:TypesOfInterestRateDerivativesUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Types of Price Risk Derivatives Used (Deprecated 2020-01-31) `us-gaap:TypesOfPriceRiskDerivativesUsed`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Contract Cost, Unapproved Change Order, Description (Deprecated 2020-01-31) `us-gaap:UnapprovedChangeOrdersDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Undistributed Income from Other than Gain (Loss) on Sale of Properties (Deprecated 2020-01-31) `us-gaap:UndistributedIncomeFromOtherThanGainOrLossOnSaleOfProperties`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Undistributed Income from Other than Gain (Loss) on Sale of Properties [Member] (Deprecated 2020-01-31) `us-gaap:UndistributedIncomeFromOtherThanGainOrLossOnSaleOfPropertiesMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Undistributed Net Realized Gain (Loss) on Sale of Properties (Deprecated 2020-01-31) `us-gaap:UndistributedNetRealizedGainOrLossOnSaleOfProperties`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Undistributed Net Realized Gain (Loss) on Sale of Properties [Member] (Deprecated 2020-01-31) `us-gaap:UndistributedNetRealizedGainOrLossOnSaleOfPropertiesMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entities [Axis] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntitiesByClassificationOfEntityAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Current (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Current, Not Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsCurrentNotPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Current, Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsCurrentPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Noncurrent (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Noncurrent, Not Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsNoncurrentNotPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Noncurrent, Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsNoncurrentPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Not Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsNotPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Not Pledged [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsNotPledgedAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Pledged (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsPledged`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Assets, Pledged [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedAssetsPledgedAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Assets (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Assets [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountAssetsAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liabilities, Net (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountAssetsAndLiabilitiesNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Carrying Amount, Liabilities [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedCarryingAmountLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Current (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesCurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Current, No Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesCurrentNoRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Current, Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesCurrentRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, No Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, No Recourse [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoRecourseAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Noncurrent (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoncurrent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Noncurrent, No Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoncurrentNoRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Noncurrent, Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesNoncurrentRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Recourse (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesRecourse`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Consolidated, Liabilities, Recourse [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityConsolidatedLiabilitiesRecourseAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Extent of or Lack of Recourse [Fixed List] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityExtentOfOrLackOfRecourseFlag`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssets`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net [Abstract] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesAbstract`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Nonconsolidated, Carrying Amount, Assets and Liabilities, Net (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountAssetsAndLiabilitiesNet`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Nonconsolidated, Carrying Amount, Liabilities (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityNonconsolidatedCarryingAmountLiabilities`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Not Primary Beneficiary, Aggregated Disclosure [Member] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityNotPrimaryBeneficiaryAggregatedDisclosureMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity, Primary Beneficiary, Aggregated Disclosure [Member] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityPrimaryBeneficiaryAggregatedDisclosureMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity (VIE) or Potential VIE, Information Unavailability, Aggregated Disclosure [Member] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityVIEOrPotentialVIEInformationUnavailabilityAggregatedDisclosureMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Variable Interest Entity (VIE) or Potential VIE, Information Unavailability [Member] (Deprecated 2020-01-31) `us-gaap:VariableInterestEntityVIEOrPotentialVIEInformationUnavailabilityMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Warrants Not Settleable in Cash [Member] (Deprecated 2019-01-31) `us-gaap:WarrantsNotSettleableInCashMember`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Water floods in Process of Installation (Deprecated 2019-01-31) `us-gaap:WaterFloodsInProcessOfInstallation`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Weighted Average Discount Rate by Country [Axis] (Deprecated 2019-01-31) `us-gaap:WeightedAverageDiscountRateByCountryAxis`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Weighted Average Discount Rate, Country of Origin [Domain] (Deprecated 2019-01-31) `us-gaap:WeightedAverageDiscountRateCountryOfOriginDomain`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Weighted Average Discount Rate [Line Items] (Deprecated 2019-01-31) `us-gaap:WeightedAverageDiscountRateLineItems`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Weighted Average Discount Rate, Percent (Deprecated 2019-01-31) `us-gaap:WeightedAverageDiscountRatePercent`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Weighted Average Discount Rate [Table] (Deprecated 2019-01-31) `us-gaap:WeightedAverageDiscountRateTable`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated
Workers' Compensation Discount, Description (Deprecated 2020-01-31) `us-gaap:WorkersCompensationDiscountDescription`	parent-child	http://fasb.org/us-gaap/role/deprecated/deprecated