Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Amortization Expense (Details)

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Goodwill and Intangible Assets - Amortization Expense (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles $ 234 [1] $ 270 [1] $ 708 [1] $ 820 [1]
Purchased credit card and Affinity relationships
        
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles 105 118 312 356
Core deposit intangibles
        
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles 36 25 108 150
Customer relationships
        
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles 87 116 268 280
Other intangibles
        
Finite-Lived Intangible Assets [Line Items]        
Amortization of intangibles $ 6 $ 11 $ 20 $ 34
[1] There were no material intersegment revenues.