Quarterly report pursuant to Section 13 or 15(d)

Derivatives - Derivative Valuation Adjustments (Details)

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Derivatives - Derivative Valuation Adjustments (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]          
Valuation adjustments on derivative assets, gross $ 215 $ 266 $ 223 $ 318  
Funding valuation adjustment on derivative assets, gross (23) 0 11 0  
Valuation adjustments on derivative liabilities, gross (14) (2) 9 (84)  
Funding valuation adjustment on derivative liabilities, gross 82 0 54 0  
Valuation adjustments on derivative assets, net (17) 161 107 201  
Funding valuation adjustment on derivative assets, net (23) 0 11 0  
Valuation adjustments on derivative liabilities, net (4) 1 (50) (84)  
Funding valuation adjustment on derivative liabilities, net 82 $ 0 54 $ 0  
Cumulative credit valuation adjustment 1,400   1,400   $ 1,600
Cumulative funding valuation adjustment 400   400   500
Cumulative debit valuation adjustment $ 800   $ 800   $ 800