Quarterly report pursuant to Section 13 or 15(d)

Securities - Rollforward of Credit Losses Recognized (Details)

v3.5.0.2
Securities - Rollforward of Credit Losses Recognized (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Rollforward of Credit Losses Recognized:        
Balance, beginning of period $ 269 $ 256 $ 266 $ 200
Additions for credit losses recognized on AFS debt securities that had no previous impairment losses 1 2 2 49
Additions for credit losses recognized on AFS debt securities that had previously incurred impairment losses 4 3 10 26
Reductions for AFS debt securities matured, sold or intended to be sold (28) 0 (32) (14)
Balance, end of period $ 246 $ 261 $ 246 $ 261