Annual report pursuant to Section 13 and 15(d)

Outstanding Loans and Leases - Home Loans - Modification Programs (Details)

v2.4.1.9
Outstanding Loans and Leases - Home Loans - Modification Programs (Details) (Residential Portfolio Segment, USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Financing Receivable, Modifications [Line Items]      
Carrying Value $ 5,712us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 $ 10,537us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2 $ 13,086us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Residential Mortgage
      
Financing Receivable, Modifications [Line Items]      
Carrying Value 5,120us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember 		10,016us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember 		12,228us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
Home equity lines of credit
      
Financing Receivable, Modifications [Line Items]      
Carrying Value 592us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember 		521us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember 		858us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 832us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		2,022us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		840us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Modifications under government programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 757us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		1,950us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		730us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Modifications under government programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 75us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		72us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		110us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 567us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		3,589us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		4,096us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Modifications under proprietary programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 421us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		3,505us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		4,015us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Modifications under proprietary programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 146us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		84us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		81us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Trial modifications      
Financing Receivable, Modifications [Line Items]      
Carrying Value 3,603us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		3,497us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		4,616us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember
Trial modifications | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 3,421us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		3,410us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		4,547us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember
Trial modifications | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 182us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		87us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember 		69us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_TrialModificationsMember
Loans discharged in Chapter 7 bankruptcy      
Financing Receivable, Modifications [Line Items]      
Carrying Value 710us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		1,429us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		3,534us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember
Loans discharged in Chapter 7 bankruptcy | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 521us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		1,151us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		2,936us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember
Loans discharged in Chapter 7 bankruptcy | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 189us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		278us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember 		598us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ChapterSevenBankruptcyMember
Contractual interest rate reduction | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 699us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		1,863us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		720us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Contractual interest rate reduction | Modifications under government programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 643us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		1,815us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		642us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Contractual interest rate reduction | Modifications under government programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 56us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		48us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember 		78us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_GovernmentModificationsMember
Contractual interest rate reduction | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 266us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		2,839us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		3,394us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Contractual interest rate reduction | Modifications under proprietary programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 244us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
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/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		2,799us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		3,350us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
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/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Contractual interest rate reduction | Modifications under proprietary programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 22us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		40us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		44us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
/ bac_LoanRestructuringModificationAxis
= bac_ContractualInterestRateReductionMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Capitalization of past due amounts | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 73us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		134us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		144us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Capitalization of past due amounts | Modifications under proprietary programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 71us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		132us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember 		144us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_ResidentialMortgageMember
/ bac_LoanRestructuringModificationAxis
= bac_CapitlizationOfPastDueAmountsMember
/ bac_LoanRestructuringModificationNameAxis
= bac_ProprietaryModificationsMember
Capitalization of past due amounts | Modifications under proprietary programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 2us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
/ bac_FinancingReceivablePortfolioSegmentAxis
= us-gaap_ResidentialPortfolioSegmentMember
/ us-gaap_FinancingReceivableTroubledDebtRestructuringAxis
= us-gaap_HomeEquityMember
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Principal and/or interest forbearance | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
Carrying Value 34us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
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Principal and/or interest forbearance | Modifications under government programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
Carrying Value 16us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
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Principal and/or interest forbearance | Modifications under government programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value 18us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
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Principal and/or interest forbearance | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
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Principal and/or interest forbearance | Modifications under proprietary programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
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Principal and/or interest forbearance | Modifications under proprietary programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
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Other modifications | Modifications under government programs      
Financing Receivable, Modifications [Line Items]      
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Other modifications | Modifications under government programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
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Financing Receivable, Modifications [Line Items]      
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Other modifications | Modifications under proprietary programs      
Financing Receivable, Modifications [Line Items]      
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Other modifications | Modifications under proprietary programs | Residential Mortgage      
Financing Receivable, Modifications [Line Items]      
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Other modifications | Modifications under proprietary programs | Home equity lines of credit      
Financing Receivable, Modifications [Line Items]      
Carrying Value $ 47us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
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