Quarterly report pursuant to Section 13 or 15(d)

Securities - Certain Corporate and Strategic Investments (Details)

v2.4.1.9
Securities - Certain Corporate and Strategic Investments (Details) (Merchant Servicing Joint Venture, USD $)
In Billions, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Merchant Servicing Joint Venture
   
Schedule of Equity Method Investments [Line Items]    
Equity method investment ownership percentage 49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= bac_MerchantServicingJointVentureMember
 
Equity method investments $ 3.1us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= bac_MerchantServicingJointVentureMember
$ 3.1us-gaap_EquityMethodInvestments
/ us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis
= bac_MerchantServicingJointVentureMember