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 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities [Abstract]        
Total OTTI losses $ (15) $ (11) $ (31) $ (82)
Less: non-credit portion of total OTTI losses recognized in OCI 10 6 19 7
Net credit-related impairment losses recognized in earnings $ (5) $ (5) $ (12) $ (75)