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 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Rollforward of Credit Losses Recognized:        
Balance, beginning of period $ 246 $ 261 $ 266 $ 200
Additions for credit losses recognized on AFS debt securities that had previously incurred impairment losses 0 1 2 50
Additions for credit losses recognized on AFS debt securities that had previously incurred impairment losses 2 0 12 26
Reductions for AFS debt securities matured, sold or intended to be sold 0 0 (32) (14)
September 30, 2016 $ 248 $ 262 $ 248 $ 262