 | us-gaap:IncomeStatementAbstract | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists |
 | us-gaap:OperatingCostsAndExpensesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternative |
 | us-gaap:OperatingCostsAndExpensesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternativeStatementTable |
 | us-gaap:OperatingCostsAndExpensesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITs |
 | us-gaap:OperatingCostsAndExpensesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITsStatementTable |
 | us-gaap:OperatingCostsAndExpensesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrusts |
 | us-gaap:OperatingCostsAndExpensesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrustsStatementTable |
 | us-gaap:OperatingCostsAndExpensesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:OperatingCostsAndExpenses | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:OperatingCostsAndExpensesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeStatementTable |
 | us-gaap:OperatingExpensesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenue |
 | us-gaap:OperatingExpensesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenueStatementTable |
 | us-gaap:ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity |
 | us-gaap:ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable |
 | us-gaap:ComponentOfOperatingOtherCostAndExpenseLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/OtherExpenses |
 | us-gaap:ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivities |
 | us-gaap:ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeOnDerivativesLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/DerivativeInstrumentsAndHedgingActivitiesReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable |
 | us-gaap:InsuranceIndustryIncomeExpenseAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInsurance |