 | us-gaap:RevenuesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternative |
 | us-gaap:RevenuesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeAlternativeStatementTable |
 | us-gaap:RevenuesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITs |
 | us-gaap:RevenuesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateExcludingREITsStatementTable |
 | us-gaap:RevenuesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrusts |
 | us-gaap:RevenuesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeRealEstateInvestmentTrustsStatementTable |
 | us-gaap:NoninterestIncome | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncomeDiscontinuedOperationsAlternate |
 | us-gaap:RevenuesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncome |
 | us-gaap:RevenuesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeStatementTable |
 | us-gaap:CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatements |
 | us-gaap:CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/OrganizationConsolidationAndPresentationOfFinancialStatementsScheduleOfCollaborativeArrangementsAndNoncollaborativeArrangementTransactionsTable |
 | us-gaap:SelectedQuarterlyFinancialInformationAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InterimReporting |
 | us-gaap:DisaggregationOfRevenueLineItems | parent-child | http://fasb.org/us-gaap/role/disclosure/RevenuefromContractswithCustomers |
 | us-gaap:Revenues | summation-item | http://fasb.org/us-gaap/role/disclosure/RevenuefromContractswithCustomers |
 | us-gaap:DisaggregationOfRevenueLineItems | domain-member | http://fasb.org/us-gaap/role/disclosure/RevenuefromContractswithCustomersDisaggregationOfRevenueTable |