 | us-gaap:DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationDeferredRevenue | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxPayable | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationDeferredTaxLiabilities | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationPostretirementPlanBenefitObligation | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherLiabilities | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation | parent-child | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperations |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationAccountsPayableAndAccruedLiabilitiesAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationDeferredRevenue | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationAccruedIncomeTaxPayable | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationPensionPlanBenefitObligation | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationPostretirementPlanBenefitObligation | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:DisposalGroupIncludingDiscontinuedOperationOtherLiabilities | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |
 | us-gaap:LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation | domain-member | http://fasb.org/us-gaap/role/disclosure/DiscontinuedOperationsIncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable |