 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperations |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperationsStatementTable |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified-RealEstateOperations |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified-RealEstateOperationsStatementTable |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified |
 | us-gaap:CashAndCashEquivalentsAtCarryingValue | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassified |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionClassifiedStatementTable |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-InvestmentBasedOperations |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-InvestmentBasedOperationsStatementTable |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:CashAndCashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |
 | us-gaap:CashEquivalentsAtCarryingValueAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalents |
 | us-gaap:CashEquivalentsAtCarryingValueAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/CashAndCashEquivalentsScheduleOfCashAndCashEquivalentsTable |