Quarterly report pursuant to Section 13 or 15(d)

Securities - Asset Impairment Losses Recognized in Earnings (Details)

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Securities - Asset Impairment Losses Recognized in Earnings (Details) - Non-agency residential - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities [Abstract]        
Total OTTI losses $ (6) $ (5) $ (27) $ (87)
Less: non-credit portion of total OTTI losses recognized in OCI 4 3 13 10
Net credit-related impairment losses recognized in earnings $ (2) $ (2) $ (14) $ (77)