 | us-gaap:DividendIncomeSecuritiesOperatingTaxable | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxExempt | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxAdvantaged | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:DividendIncomeOperating | parent-child | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenue |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxable | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxExempt | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxAdvantaged | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:DividendIncomeOperating | domain-member | http://fasb.org/us-gaap/role/statement/StatementOfIncomeInterestBasedRevenueStatementTable |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxable | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterest |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxExempt | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterest |
 | us-gaap:DividendIncomeSecuritiesOperatingTaxAdvantaged | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterest |
 | us-gaap:DividendIncomeOperating | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesBankingAndThriftInterest |