 | us-gaap:ResearchAndDevelopmentExpense | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:DepreciationAndAmortization | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:ExplorationExpense | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:CarryingCostsPropertyAndExplorationRights | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:RecapitalizationCosts | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:RestructuringSettlementAndImpairmentProvisions | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:CustodyFees | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:TrusteeFees | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:SponsorFees | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:RoyaltyExpense | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:AccretionExpenseIncludingAssetRetirementObligations | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:LoanPortfolioExpense | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:PreOpeningCosts | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:GainLossRelatedToLitigationSettlement | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:MalpracticeLossContingencyClaimsIncurredNet | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:InsuranceRecoveries | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:OtherCostAndExpenseOperating | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:BusinessCombinationIntegrationRelatedCosts | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:UnsolicitedTenderOfferCosts | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:ProfessionalAndContractServicesExpense | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |