Annual report pursuant to Section 13 and 15(d)

Regulatory Requirements and Restrictions - Narrative (Details)

v3.10.0.1
Regulatory Requirements and Restrictions - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Average daily reserve balance requirements, in excess of vault cash, maintained with the Federal Reserve $ 11,400 $ 8,900
Cash segregated under other regulations 5,800 4,100
Securities segregated under other regulations 16,600 17,300
Deposits with clearing organizations 8,100 $ 11,900
Proceeds from subsidiary $ 1,400  
Bank of America, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Preceding period of net profits for dividends 2 years  
Cash dividends allowable to be declared and paid by parent company by consolidated subsidiaries $ 3,100  
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 40  
Subsidiaries, Bank of America California, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Proceeds from dividends received 320  
Bank of America, N.A.    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Proceeds from dividends received $ 26,100