Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Derivative Balances (Details)

v2.4.1.9
Derivatives - Derivative Balances (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Notional Amount of Derivatives, [Abstract]    
Contract/Notional $ 1,094,252,000,000invest_DerivativeNotionalAmount $ 1,134,132,000,000invest_DerivativeNotionalAmount
Derivative Assets [Abstract]    
Gross Derivative Assets 966,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement 984,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
Less: Legally enforceable master netting agreements (852,000,000,000)us-gaap_DerivativeAssetFairValueGrossLiability (884,800,000,000)us-gaap_DerivativeAssetFairValueGrossLiability
Less: Cash collateral received/paid (52,700,000,000)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset (47,300,000,000)us-gaap_DerivativeAssetCollateralObligationToReturnCashOffset
Derivative assets 61,331,000,000us-gaap_DerivativeAssets 52,682,000,000us-gaap_DerivativeAssets
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 960,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement 981,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
Less: Legally enforceable master netting agreements (852,000,000,000)us-gaap_DerivativeLiabilityFairValueGrossAsset (884,800,000,000)us-gaap_DerivativeLiabilityFairValueGrossAsset
Less: Cash collateral received/paid (55,800,000,000)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset (50,100,000,000)us-gaap_DerivativeLiabilityCollateralRightToReclaimCashOffset
Derivative liabilities 52,234,000,000us-gaap_DerivativeLiabilities 46,909,000,000us-gaap_DerivativeLiabilities
Interest rate contracts | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 22,171,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		29,445,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 630,600,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		667,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 617,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		658,700,000,000us-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 10,511,900,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		10,159,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 2,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		1,700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 2,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember 		2,000,000,000us-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 1,680,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		1,725,200,000,000invest_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 93,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		85,400,000,000us-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 1,678,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		1,739,800,000,000invest_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 93,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		85,600,000,000us-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 contracts | Swaps    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 2,135,200,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		2,159,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 56,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		52,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 63,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		56,500,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Foreign exchange contracts | Spot, futures and forwards    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 4,379,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		4,226,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 78,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		70,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 78,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember 		72,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
Foreign exchange contracts | Options | Written options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 643,900,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		600,700,000,000invest_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 17,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		16,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember
Foreign exchange contracts | Options | Purchased options    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 633,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		584,600,000,000invest_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 17,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		15,100,000,000us-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 191,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		193,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 3,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		3,200,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 3,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		4,000,000,000us-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 71,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		69,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 1,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		2,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 2,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember 		1,800,000,000us-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 367,900,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		341,000,000,000invest_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 27,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		26,000,000,000us-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 342,400,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		318,400,000,000invest_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 29,100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		27,900,000,000us-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 67,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		74,300,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 4,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		5,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 8,300,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		8,500,000,000us-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 416,100,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		376,500,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Assets [Abstract]    
Gross Derivative Assets 4,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		4,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember 		1,800,000,000us-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 106,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		129,500,000,000invest_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 9,400,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_ShortMember 		11,500,000,000us-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 122,000,000,000invest_DerivativeNotionalAmount
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		141,300,000,000invest_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 8,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OptionMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_PositionAxis
= us-gaap_LongMember 		10,700,000,000us-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 9,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		12,207,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember
Credit derivatives | Swaps | Purchased credit derivatives    
Notional Amount of Derivatives, [Abstract]    
Contract/Notional 1,054,700,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		1,094,800,000,000invest_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 10,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		13,300,000,000us-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 23,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		23,400,000,000us-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 1,032,418,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		1,073,101,000,000invest_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 23,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		24,500,000,000us-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 9,584,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		11,870,000,000us-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 43,800,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		44,300,000,000invest_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 		200,000,000us-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 1,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapBuyingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		1,400,000,000us-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 61,834,000,000invest_DerivativeNotionalAmount
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		61,031,000,000invest_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 100,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		500,000,000us-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 316,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_CreditDerivativesByContractTypeAxis
= us-gaap_CreditDefaultSwapSellingProtectionMember
/ us-gaap_DerivativeByNatureAxis
= us-gaap_OtherCreditDerivativesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CreditRiskContractMember 		337,000,000us-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 954,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		974,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 956,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		979,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
Trading and Other Risk Management Derivatives | Interest rate contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 621,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		658,500,000,000us-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 616,000,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		658,200,000,000us-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 2,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,700,000,000us-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 2,800,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		2,000,000,000us-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 93,900,000,000us-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 		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
Trading and Other Risk Management Derivatives | Interest rate contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 93,900,000,000us-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 		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
Trading and Other Risk Management Derivatives | Foreign exchange contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 55,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		51,500,000,000us-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 60,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		54,600,000,000us-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 contracts | Spot, futures and forwards    
Derivative Assets [Abstract]    
Gross Derivative Assets 76,900,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		68,900,000,000us-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 78,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_SpotFuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		72,400,000,000us-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 contracts | Options | Written options    
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 17,800,000,000us-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 		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
Trading and Other Risk Management Derivatives | Foreign exchange contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 17,100,000,000us-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 		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
Trading and Other Risk Management Derivatives | Equity contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 3,400,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		3,200,000,000us-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 3,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		4,000,000,000us-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 1,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		2,100,000,000us-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 2,200,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_EquityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,800,000,000us-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 27,800,000,000us-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 		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
Trading and Other Risk Management Derivatives | Equity contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 29,100,000,000us-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 		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
Trading and Other Risk Management Derivatives | Commodity contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 4,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		5,800,000,000us-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 8,300,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		8,500,000,000us-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 4,000,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		4,500,000,000us-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 1,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= bac_FuturesAndForwardsMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_CommodityContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember 		1,800,000,000us-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 9,400,000,000us-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 		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
Trading and Other Risk Management Derivatives | Commodity contracts | Options | Purchased options    
Derivative Assets [Abstract]    
Gross Derivative Assets 8,900,000,000us-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 		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
Trading and Other Risk Management Derivatives | Credit derivatives | Swaps | Purchased credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 10,900,000,000us-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 		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
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 23,000,000,000us-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 		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
Trading and Other Risk Management Derivatives | Credit derivatives | Swaps | Written credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 23,900,000,000us-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 		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
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 9,600,000,000us-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 		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
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 		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
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 1,200,000,000us-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 		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
Trading and Other Risk Management Derivatives | Credit derivatives | Total return swaps/other | Written credit derivatives    
Derivative Assets [Abstract]    
Gross Derivative Assets 100,000,000us-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 		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
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 		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
Qualifying Accounting Hedges    
Derivative Assets [Abstract]    
Gross Derivative Assets 11,500,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		10,800,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Derivative Liabilities [Abstract]    
Gross Derivative Liabilities 3,900,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		2,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
Qualifying Accounting Hedges | Interest rate contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 9,300,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		8,500,000,000us-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 1,100,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		500,000,000us-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 contracts | Swaps    
Derivative Assets [Abstract]    
Gross Derivative Assets 700,000,000us-gaap_DerivativeAssetFairValueGrossAssetIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		800,000,000us-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 2,600,000,000us-gaap_DerivativeLiabilityFairValueGrossLiabilityIncludingNotSubjectToMasterNettingArrangement
/ us-gaap_DerivativeByNatureAxis
= us-gaap_SwapMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeContractMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember 		1,900,000,000us-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 contracts | 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 		1,500,000,000us-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
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/ us-gaap_DerivativeByNatureAxis
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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
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/ us-gaap_DerivativeInstrumentRiskAxis
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/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeInstrumentRiskAxis
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/ us-gaap_HedgingDesignationAxis
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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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/ us-gaap_DerivativeByNatureAxis
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/ us-gaap_DerivativeInstrumentRiskAxis
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