 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperations |
 | us-gaap:OtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperations |
 | us-gaap:PrepaidExpenseAndOtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperations |
 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperationsStatementTable |
 | us-gaap:OtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperationsStatementTable |
 | us-gaap:PrepaidExpenseAndOtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-RealEstateOperationsStatementTable |
 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:OtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:PrepaidExpenseAndOtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperations |
 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:OtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:PrepaidExpenseAndOtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-DepositBasedOperationsStatementTable |
 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:OtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:PrepaidExpenseAndOtherAssets | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperations |
 | us-gaap:PrepaidExpenseCurrentAndNoncurrent | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |
 | us-gaap:OtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |
 | us-gaap:PrepaidExpenseAndOtherAssets | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfFinancialPositionUnclassified-SecuritiesBasedOperationsStatementTable |