Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Intangible Assets (Details)

v3.7.0.1
Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Millions
Mar. 31, 2017
Dec. 31, 2016
Intangible Assets [Abstract]    
Gross Carrying Value $ 14,564 $ 14,553
Accumulated Amortization 11,737 11,564
Net Carrying Value 2,827 2,989
International Consumer Credit Card Business | Disposal Group, Held-for-sale, Not Discontinued Operations    
Intangible Assets [Abstract]    
Disposal group, intangible assets 61 67
Trade Names    
Intangible Assets [Abstract]    
Intangible assets, net (excluding goodwill) 1,600 1,600
Purchased credit card relationships    
Intangible Assets [Abstract]    
Gross Carrying Value 6,841 6,830
Accumulated Amortization 6,311 6,243
Net Carrying Value 530 587
Core deposit intangibles    
Intangible Assets [Abstract]    
Gross Carrying Value 3,836 3,836
Accumulated Amortization 2,071 2,046
Net Carrying Value 1,765 1,790
Customer relationships    
Intangible Assets [Abstract]    
Gross Carrying Value 3,887 3,887
Accumulated Amortization 3,355 3,275
Net Carrying Value $ 532 $ 612