Name:	bac_CreditValuationGainLossonDerivativeAssetGross
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The impact of the Corporation's own credit quality on the fair value of derivative liabilities. Credit valuation gains (losses) are recognized in trading account profits (losses).

No definition available.

Name:	bac_DebitValuationGainLossonDerivativeLiabilityGross
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Derivative Funding Risk Valuation Adjustment, Derivative Assets

No definition available.

Name:	bac_DerivativeFundingRiskValuationAdjustmentDerivativeAssets
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Funding Valuation Gain (Loss) on Derivative Asset, Gross

No definition available.

Name:	bac_FundingValuationGainLossonDerivativeAssetGross
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Valuation Gain Loss on Derivatives, Gross [Abstract]

No definition available.

Name:	bac_ValuationGainLossonDerivativesGrossAbstract
Namespace Prefix:	bac_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of credit risk valuation adjustment to derivative assets to properly reflect the credit quality of the counterparties.

No definition available.

Name:	us-gaap_DerivativeCreditRiskValuationAdjustmentDerivativeAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of credit risk valuation adjustment to derivative liabilities to properly reflect the credit quality of the entity.

No definition available.