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Outstanding Loans and Leases - Rollforward of Accretable Yield (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2014
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Dec. 31, 2013
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| Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward] | ||
| Accretable yield, beginning of period | $ 6,694,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | $ 4,644,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield |
| Accretion | (1,061,000,000)us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion | (1,194,000,000)us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAccretion |
| Loans purchased | 1,125,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldAdditions | |
| Disposals/transfers | (506,000,000)bac_CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAccretableYieldDisposalsofLoansandTransferstoLoansHeldforsale | (361,000,000)bac_CertainLoansAcquiredinTransferNotAccountedforasDebtSecuritiesAccretableYieldDisposalsofLoansandTransferstoLoansHeldforsale |
| Reclassifications from nonaccretable difference | 481,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference | 2,480,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYieldReclassificationsToFromNonaccretableDifference |
| Accretable yield, ending of period | 5,608,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield | 6,694,000,000us-gaap_CertainLoansAcquiredInTransferNotAccountedForAsDebtSecuritiesAccretableYield |
| Purchased credit impaired loans sold | 1,900,000,000us-gaap_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesAccretableYieldDisposalsOfLoans | |
| Receivables Acquired with Deteriorated Credit Quality | ||
| Financing Receivable, Allowance for Credit Losses [Line Items] | ||
| Financing receivable allowance sold |
$ 317,000,000us-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 additions 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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- Details
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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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- Details
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