Annual report pursuant to Section 13 and 15(d)

Securities - Certain Corporate and Strategic Investments (Details)

v3.3.1.900
Securities - Certain Corporate and Strategic Investments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]      
Expected period to pay unfunded commitments 5 years    
Affordable housing partnerships tax credits and other tax benefits $ 928 $ 920  
Merchant Servicing Joint Venture      
Schedule of Equity Method Investments [Line Items]      
Equity method investment ownership percentage 49.00%    
Other assets      
Schedule of Equity Method Investments [Line Items]      
Low income housing tax credit investments $ 7,100 6,600  
Other assets | Merchant Servicing Joint Venture      
Schedule of Equity Method Investments [Line Items]      
Equity method investments 3,000 3,100  
Accrued expenses and other liabilities      
Schedule of Equity Method Investments [Line Items]      
Unfunded capital commitments 2,400 2,200  
Equity Investment Income | China Construction Bank Corporation      
Schedule of Equity Method Investments [Line Items]      
Realized gain (loss) on sale of equity method investment     $ 753
Other Income [Member]      
Schedule of Equity Method Investments [Line Items]      
Pretax losses from affordable housing partnerships $ (629) $ (601)