Annual report pursuant to Section 13 and 15(d)

Derivatives - Derivatives Designated as Accounting Hedges - Cash Flow and Net Investment Hedges (Details)

v3.6.0.2
Derivatives - Derivatives Designated as Accounting Hedges - Cash Flow and Net Investment Hedges (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cash flow hedges      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Accumulated OCI on Derivatives $ (299) $ 55 $ 195
Gains (Losses) in Income Reclassified from Accumulated OCI (585) (883) (760)
Hedge Ineffectiveness and Amounts Excluded from Effectiveness Testing 1 (2) (4)
Interest rate risk on variable-rate portfolios | Cash flow hedges      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Accumulated OCI on Derivatives (340) 95 68
Gains (Losses) in Income Reclassified from Accumulated OCI (553) (974) (1,119)
Hedge Ineffectiveness and Amounts Excluded from Effectiveness Testing 1 (2) (4)
Price risk on restricted stock awards | Cash flow hedges      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Accumulated OCI on Derivatives 41 (40) 127
Gains (Losses) in Income Reclassified from Accumulated OCI (32) 91 359
Hedge Ineffectiveness and Amounts Excluded from Effectiveness Testing 0 0 0
Foreign exchange risk | Net investment hedges      
Derivative Instruments, Gain (Loss) [Line Items]      
Gains (Losses) Recognized in Accumulated OCI on Derivatives 1,636 3,010 3,021
Gains (Losses) in Income Reclassified from Accumulated OCI 3 153 21
Hedge Ineffectiveness and Amounts Excluded from Effectiveness Testing $ (325) $ (298) $ (503)