v2.4.1.9

Derivatives - Credit-related Contingent Features and Collateral (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Derivative [Line Items]
Additional collateral required to be posted upon downgrade, one incremental notch	$ 1,402
Additional collateral required to be posted upon downgrade, second incremental notch	2,825
Credit derivatives
Derivative [Line Items]
Derivative liability subject to unilateral termination upon downgrade, one incremental notch	1,785
Derivative liability subject to unilateral termination upon downgrade, second incremental notch	3,850
Collateral posted subject to unilateral termination upon downgrade, one incremental notch	1,520
Collateral posted subject to unilateral termination upon downgrade, second incremental notch	2,986
Bank of America, N.A.
Derivative [Line Items]
Additional collateral required to be posted upon downgrade, one incremental notch	1,072
Additional collateral required to be posted upon downgrade, second incremental notch	$ 1,886

Additional Collateral, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value

No definition available.

Name:	bac_AdditionalCollateralEffectofDowngradebyOneIncrementalNotchAggregateFairValue
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Additional Collateral, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value

No definition available.

Name:	bac_AdditionalCollateralEffectofDowngradebySecondIncrementalNotchAggregateFairValue
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Collateral Posted, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstances

No definition available.

Name:	bac_CollateralPostedEffectofDowngradebyOneIncrementalNotchAggregateFairValueIncludingTriggeringCircumstances
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Collateral Posted, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

Name:	bac_CollateralPostedEffectofDowngradebySecondIncrementalNotchAggregateFairValueIncludingTriggeringCircumstance
Namespace Prefix:	bac_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Derivative, Net Liability Position, Effect of Downgrade by One Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

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

Derivative, Net Liability Position, Effect of Downgrade by Second Incremental Notch, Aggregate Fair Value, Including Triggering Circumstance

No definition available.

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

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Name:	dei_LegalEntityAxis=bac_SubsidiariesBankofAmericaN.A.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CreditRiskContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: