Annual report pursuant to Section 13 and 15(d)

Regulatory Requirements and Restrictions - Other Regulatory Matters (Details)

v2.4.1.9
Regulatory Requirements and Restrictions - Other Regulatory Matters (Details) (USD $)
 12 Months Ended 10 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Average daily reserve balances required by federal reserve $ 18,200,000,000bac_AverageDailyReserveBalancesRequiredByFederalReserve $ 16,600,000,000bac_AverageDailyReserveBalancesRequiredByFederalReserve  
Average daily reserve balances in excess of vault cash held with federal reserve 9,100,000,000bac_AverageDailyReserveBalancesInExcessOfVaultCashHeldWithFederalReserve 7,800,000,000bac_AverageDailyReserveBalancesInExcessOfVaultCashHeldWithFederalReserve  
Cash segregated under other regulations 4,500,000,000us-gaap_CashSegregatedUnderOtherRegulations 6,000,000,000us-gaap_CashSegregatedUnderOtherRegulations  
Securities segregated under other regulations 13,100,000,000us-gaap_SecuritiesSegregatedUnderOtherRegulations 8,400,000,000us-gaap_SecuritiesSegregatedUnderOtherRegulations  
Bank of America, N.A.      
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Cash dividends paid to parent company by consolidated subsidiaries 12,400,000,000us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries
/ dei_LegalEntityAxis
= bac_SubsidiariesBankofAmericaN.A.Member 		   
Subsidiaries, FIA Card Services, N.A.      
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Return of capital paid to parent company by consolidated subsidiaries 4,200,000,000bac_ReturnOfCapitalPaidToParentCompanyByConsolidatedSubsidiaries
/ dei_LegalEntityAxis
= bac_SubsidiariesFIACardServicesN.A.Member 		   
Scenario, Forecast | Bank of America, N.A.      
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Cash dividends allowable to be declared and paid by parent company by consolidated subsidiaries     16,900,000,000bac_CashDividendsAllowabletobeDeclaredandPaidtoParentCompanyByConsolidatedSubsidiaries
/ dei_LegalEntityAxis
= bac_SubsidiariesBankofAmericaN.A.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember
Scenario, Forecast | Subsidiaries, Bank of America California, N.A.      
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]      
Cash dividends allowable to be declared and paid by parent company by consolidated subsidiaries     $ 924,000,000bac_CashDividendsAllowabletobeDeclaredandPaidtoParentCompanyByConsolidatedSubsidiaries
/ dei_LegalEntityAxis
= bac_SubsidiariesBankofAmericaCaliforniaN.A.Member
/ us-gaap_StatementScenarioAxis
= us-gaap_ScenarioForecastMember