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 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITs |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITsStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrusts |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrustsStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:NonoperatingGainsLosses | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:NoninterestIncome | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncomeFirstAlternative |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenue |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInsuranceBasedRevenueStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeSecuritiesBasedIncome |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeSecuritiesBasedIncomeStatementTable |
 | us-gaap:GainOrLossOnSaleOfStockInSubsidiaryOrEquityMethodInvesteeAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsIndirectAdditionalElements |
 | us-gaap:SubsidiaryOrEquityMethodInvesteeLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/Equity |
 | us-gaap:SubsidiaryOrEquityMethodInvesteeLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/EquityScheduleOfSubsidiaryOrEquityMethodInvesteeTable |
 | us-gaap:OperatingExpenses | summation-item | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftCalc1 |