Quarterly report pursuant to Section 13 or 15(d)

Outstanding Loans and Leases - Consumer Real Estate - Credit Quality Indicators (Details)

v2.4.1.9
Outstanding Loans and Leases - Consumer Real Estate - Credit Quality Indicators (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 877,956us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome $ 881,391us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Loans and leases, measured at fair value 8,466us-gaap_LoansReceivableFairValueDisclosure 8,681us-gaap_LoansReceivableFairValueDisclosure
Consumer Real Estate    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases, measured at fair value 2,100us-gaap_LoansReceivableFairValueDisclosure
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember 		2,100us-gaap_LoansReceivableFairValueDisclosure
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
Consumer Real Estate | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 156,888us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember 		162,220us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 36,852us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember 		38,825us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Legacy Assets & Servicing Residential Mortgage | Pay option    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,900us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_ProductOrServiceAxis
= bac_PayOptionMember 		3,200us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_ProductOrServiceAxis
= bac_PayOptionMember
Consumer Real Estate | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 14,185us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember 		15,152us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Residential Mortgage PCI | Pay option    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,500us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_ProductOrServiceAxis
= bac_PayOptionMember 		2,800us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_ProductOrServiceAxis
= bac_PayOptionMember
Consumer Real Estate | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 51,029us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember 		51,887us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 27,188us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember 		28,221us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 5,354us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember 		5,617us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Less than 620 | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 4,122us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember 		4,184us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Less than 620 | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 5,988us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember 		6,313us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Less than 620 | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 5,350us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember 		6,109us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Less than 620 | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,158us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember 		2,169us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Less than 620 | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,352us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember 		3,470us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Less than 620 | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 812us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember 		864us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreLessThan620Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 6,142us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember 		6,272us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,906us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember 		4,032us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,905us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember 		3,014us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,613us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember 		3,683us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 4,434us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember 		4,529us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 620 and less than 680 | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 953us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember 		995us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween620and680Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 22,002us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember 		21,946us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 6,231us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember 		6,463us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,288us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember 		3,310us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 10,067us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember 		10,231us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 7,614us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember 		7,905us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 680 and less than 740 | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,578us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember 		1,651us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScorebetween680and740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 78,158us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember 		76,828us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 9,680us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember 		10,037us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,642us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember 		2,719us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 35,191us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember 		35,804us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 11,788us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember 		12,317us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
Consumer Real Estate | Greater than or equal to 740 | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,011us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember 		2,107us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_CreditScoreFicoAxis
= bac_RefreshedFICOScoreGreaterThanOrEqualTo740Member
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
Consumer Real Estate | Less than or equal to 90 percent | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 101,243us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		100,255us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Less than or equal to 90 percent | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 17,772us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		18,499us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Less than or equal to 90 percent | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 9,050us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		9,972us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Less than or equal to 90 percent | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 44,705us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		45,414us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Less than or equal to 90 percent | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 16,671us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		17,453us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Less than or equal to 90 percent | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,868us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember 		2,046us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueLessThanOrEqualToNinetyPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 5,004us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		4,958us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,938us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		3,081us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 1,925us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		2,005us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,347us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		2,442us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,124us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		3,272us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 90 percent but less than or equal to 100 percent | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 960us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember 		1,048us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanNinetyPercentButLessThanOrEqualToHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 4,177us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		4,017us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 5,095us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		5,265us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,210us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		3,175us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 3,977us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		4,031us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 7,393us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		7,496us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Greater than 100 percent | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 2,526us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember 		2,523us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_RefreshedLoanToValueGreaterThanHundredPercentMember
Consumer Real Estate | Fully Insured Loans | Core Portfolio Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 46,464us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		52,990us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember
Consumer Real Estate | Fully Insured Loans | Legacy Assets & Servicing Residential Mortgage    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 11,047us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		11,980us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioResidentialFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember
Consumer Real Estate | Fully Insured Loans | Residential Mortgage PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_ResidentialMortgagePurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember
Consumer Real Estate | Fully Insured Loans | Core Portfolio Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_CorePortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember
Consumer Real Estate | Fully Insured Loans | Legacy Assets & Servicing Home Equity    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases 0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_LegacyAssetsandServicingPortfolioHomeEquityFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
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/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember
Consumer Real Estate | Fully Insured Loans | Home Equity PCI    
Financing Receivable, Recorded Investment [Line Items]    
Loans and leases $ 0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember 		$ 0us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= bac_HomeEquityPurchaseCreditImpairedFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= bac_FullyInsuredLoansMember