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

Credit Extension Commitments, Deferred Revenue

No definition available.

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

Legally binding unfunded commitments distributed to other financial institutions.

No definition available.

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

This represents the notional amount of commitments to extend credit which are accounted for under the fair value option.

No definition available.

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

Represents the estimated probable losses related to unfunded lending commitments measured at historical cost, such as letters of credit and financial guarantees, and binding unfunded loan commitments. Unfunded lending commitments are subject to the same assessment as funded loans except utilization assumptions are considered.

No definition available.

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

Fair Value, Option, Fair Value Carrying Amount, Liabilities

No definition available.

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

- References

No definition available.

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.