 | us-gaap:NonredeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists |
 | us-gaap:RedeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists |
 | us-gaap:ConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists |
 | us-gaap:ContingentConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/eedm/ExtensibleEnumerationLists |
 | us-gaap:NonredeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftDistributionOfAssetsLiabilitiesAndStockholdersEquityTable |
 | us-gaap:RedeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftDistributionOfAssetsLiabilitiesAndStockholdersEquityTable |
 | us-gaap:ConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftDistributionOfAssetsLiabilitiesAndStockholdersEquityTable |
 | us-gaap:ContingentConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftDistributionOfAssetsLiabilitiesAndStockholdersEquityTable |
 | us-gaap:NonredeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableBeforeAllowanceForCreditLossMaturityTable |
 | us-gaap:RedeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableBeforeAllowanceForCreditLossMaturityTable |
 | us-gaap:ConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableBeforeAllowanceForCreditLossMaturityTable |
 | us-gaap:ContingentConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftFinancingReceivableBeforeAllowanceForCreditLossMaturityTable |
 | us-gaap:NonredeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:RedeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:ConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:ContingentConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterestRateAndInterestDifferentialAnalysisTable |
 | us-gaap:NonredeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftTransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable |
 | us-gaap:RedeemablePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftTransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable |
 | us-gaap:ConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftTransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable |
 | us-gaap:ContingentConvertiblePreferredStockMember | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftTransferOfCertainFinancialAssetsAccountedForAsSecuredBorrowingsTable |