Annual report pursuant to Section 13 and 15(d)

Derivatives - Derivative Balances (Details)

v2.4.1.9
Derivatives - Derivative Balances (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Notional Amount of Derivatives, [Abstract]    
Contract/Notional $ 1,134,132,000,000invest_DerivativeNotionalAmount $ 1,328,787,000,000invest_DerivativeNotionalAmount
Derivative Assets [Abstract]    
Gross Derivative Assets 984,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement 920,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
Less: Legally enforceable master netting agreements (884,800,000,000)us-gaap_DerivativeAssetFairValueGrossLiability (825,500,000,000)us-gaap_DerivativeAssetFairValueGrossLiability
Less: Cash collateral received/paid (47,300,000,000)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset (47,300,000,000)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
Derivative assets 52,682,000,000us-gaap_DerivativeAssets 47,495,000,000us-gaap_DerivativeAssets
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 981,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement 906,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
Less: Legally enforceable master netting agreements (884,800,000,000)us-gaap_DerivativeLiabilityFairValueGrossAsset (825,500,000,000)us-gaap_DerivativeLiabilityFairValueGrossAsset
Less: Cash collateral received/paid (50,100,000,000)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset (43,500,000,000)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
Derivative liabilities 46,909,000,000us-gaap_DerivativeLiabilities 37,407,000,000us-gaap_DerivativeLiabilities
Interest rate contracts | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 29,445,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		33,272,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 667,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		667,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 658,700,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		659,300,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Interest rate contracts | Futures and forwards    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 10,159,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		8,217,600,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 1,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		1,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 2,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		1,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Interest rate contracts | Options | Written options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 1,725,200,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		2,065,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 85,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		64,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Interest rate contracts | Options | Purchased options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 1,739,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		2,028,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Assets [Abstract]    
Gross Derivative Assets 85,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		65,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Foreign exchange risk | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 2,159,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		2,284,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 52,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		44,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 56,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		43,700,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Foreign exchange risk | Spot, futures and forwards    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 4,226,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		2,922,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 70,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		33,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 72,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		34,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Foreign exchange risk | Options | Written options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 600,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		412,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 16,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		9,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Foreign exchange risk | Options | Purchased options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 584,600,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		392,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Assets [Abstract]    
Gross Derivative Assets 15,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		8,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Equity contracts | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 193,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		162,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 3,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		3,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 4,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		4,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Equity contracts | Futures and forwards    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 69,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		71,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 2,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		1,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		1,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Equity contracts | Options | Written options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 341,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		315,600,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 26,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		29,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Equity contracts | Options | Purchased options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 318,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		266,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Assets [Abstract]    
Gross Derivative Assets 27,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		30,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Commodity contracts | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 74,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		73,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 5,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		3,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 8,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		5,700,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Commodity contracts | Futures and forwards    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 376,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		454,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 4,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		4,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		2,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Commodity contracts | Options | Written options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 129,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		157,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 11,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		5,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Commodity contracts | Options | Purchased options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 141,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		164,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Assets [Abstract]    
Gross Derivative Assets 10,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		5,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		0us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Credit derivatives    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 12,207,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		13,991,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Credit derivatives | Swaps | Purchased credit derivatives    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 1,094,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		1,305,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 13,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		15,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 23,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		28,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Credit derivatives | Swaps | Written credit derivatives    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 1,073,101,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		1,265,380,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 24,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		29,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 11,870,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		13,814,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Credit derivatives | Total return swaps/other | Purchased credit derivatives    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 44,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		38,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		2,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		3,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Credit derivatives | Total return swaps/other | Written credit derivatives    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 61,031,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		63,407,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		4,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 337,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		177,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Trading and Other Risk Management Derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 974,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		911,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 979,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		903,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Interest rate contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 658,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		659,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 658,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		658,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Interest rate contracts | Futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 1,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 2,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Interest rate contracts | Options | Written options    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 85,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		64,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Trading and Other Risk Management Derivatives | Interest rate contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 85,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		65,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Trading and Other Risk Management Derivatives | Foreign exchange risk | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 51,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		43,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 54,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		42,700,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Foreign exchange risk | Spot, futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 68,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		32,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 72,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		33,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Foreign exchange risk | Options | Written options    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 16,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		9,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Trading and Other Risk Management Derivatives | Foreign exchange risk | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 15,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		8,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Trading and Other Risk Management Derivatives | Equity contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 3,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		3,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 4,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		4,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Equity contracts | Futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 2,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Equity contracts | Options | Written options    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 26,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		29,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Trading and Other Risk Management Derivatives | Equity contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 27,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		30,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Trading and Other Risk Management Derivatives | Commodity contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 5,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		3,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 8,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		5,700,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Commodity contracts | Futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 4,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		4,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		2,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Commodity contracts | Options | Written options    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 11,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		5,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Trading and Other Risk Management Derivatives | Commodity contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 10,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		5,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ us-gaap_PositionAxis
= us-gaap_LongMember
Trading and Other Risk Management Derivatives | Credit derivatives | Swaps | Purchased credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 13,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		15,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 23,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		28,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Credit derivatives | Swaps | Written credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 24,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		29,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 11,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		13,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Credit derivatives | Total return swaps/other | Purchased credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		2,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		3,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Credit derivatives | Total return swaps/other | Written credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		4,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 300,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Qualifying Accounting Hedges    
Derivative Assets [Abstract]    
Gross Derivative Assets 10,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		9,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 2,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		3,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Interest rate contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 8,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		7,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Interest rate contracts | Futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 0us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		0us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Foreign exchange risk | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		1,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		1,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Foreign exchange risk | Spot, futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 1,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		1,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeInstrumentRiskAxis
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/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Commodity contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 0us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
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/ us-gaap_HedgingDesignationAxis
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/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Commodity contracts | Futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets $ 0us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeInstrumentRiskAxis
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/ us-gaap_HedgingDesignationAxis
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