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Outstanding Loans and Leases - Purchased Credit-Impaired Loans (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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Dec. 31, 2014
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| Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] | |||
| Accretable yield, January 1, 2014 | $ 5,608us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | $ 6,694us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | $ 6,694us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield |
| Accretion | (233)us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion | (1,061)us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion | |
| Disposals/transfers | (136)bac_CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAccretableYieldDisposalsofLoansandTransferstoLoansHeldforsale | (506)bac_CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAccretableYieldDisposalsofLoansandTransferstoLoansHeldforsale | |
| Reclassifications from nonaccretable difference | 481us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference | ||
| Reclassifications to nonaccretable difference | (72)us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToNonaccretableDifference | ||
| Accretable yield, December 31, 2014 | 5,167us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | 5,608us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | |
| Purchased credit impaired loans sold | 586us-gaap_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesAccretableYieldDisposalsOfLoans | 454us-gaap_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesAccretableYieldDisposalsOfLoans | |
| Receivables Acquired with Deteriorated Credit Quality | |||
| Financing Receivable, Allowance for Credit Losses [Line Items] | |||
| Financing receivable allowance sold |
$ 110us-gaap_AllowanceForLoanAndLeaseLossesLoansSold / bac_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = bac_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
$ 158us-gaap_AllowanceForLoanAndLeaseLossesLoansSold / bac_ReceivablesAcquiredwithDeterioratedCreditQualityAxis = bac_ReceivablesAcquiredwithDeterioratedCreditQualityMember |
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- Definition
Certain loans acquired in transfer not accounted for as debt securities Accretable yield disposals transfers. No definition available.
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- Definition
Amount of reduction of allowance reserve for credit loss arising from sale of loan and lease portfolios. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Sale or transfer of a loan during the period that results in a reduction in the excess of a loan's cash flows expected to be collected over the investor's initial investment. This relates to loans accounted for as a held-to-maturity debt security, with evidence of deterioration of credit quality since origination that was acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of decrease from accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of reclassification (to) from nonaccretable difference (from) to the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of decrease from reclassification to nonaccretable difference of the excess of a loan's cash flows expected to be collected over the investor's initial investment in acquired loans not accounted for as debt securities with evidence of deterioration of credit quality. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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