 | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperations |
 | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperationsStatementTable |
 | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:InterestAndDividendsPayableCurrentAndNoncurrent | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrentAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:LiabilitiesAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-InvestmentBasedOperations |
 | us-gaap:LiabilitiesAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-InvestmentBasedOperationsStatementTable |
 | us-gaap:InterestAndDividendsPayableCurrentAndNoncurrentAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:InterestAndDividendsPayableCurrentAndNoncurrentAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |
 | us-gaap:DividendsPayableLineItems | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsSupplementalDisclosures |
 | us-gaap:DividendsPayableLineItems | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfCashFlowsSupplementalDisclosuresDividendsPayableTable |
 | us-gaap:InterestAndDividendsPayableCurrentAndNoncurrentAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/PayablesAndAccruals |