Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Nonrecurring Fair Value (Details)

v3.7.0.1
Fair Value Measurements - Nonrecurring Fair Value (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value $ 2,707   $ 2,707   $ 4,026
Loans and leases, measured at fair value 7,325   7,325   7,085
Other assets, measured at fair value 14,865   14,865   $ 13,802
Nonrecurring          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Gains (Losses) on loans held-for-sale 0 $ (7) 0 $ (12)  
Gains (Losses) on loans and leases (105) (183) (201) (322)  
Gains (Losses) on foreclosed properties (26) (28) (35) (37)  
Gains (Losses) on other assets (55) (34) (137) (47)  
Nonrecurring | Government Guaranteed Mortgage Loans upon Foreclosure Receivable          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Foreclosed properties, measured at fair value 1,000 1,300 1,000 1,300  
Nonrecurring | Level 2          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value 64 588 64 588  
Loans and leases, measured at fair value 0 0 0 0  
Foreclosed properties, measured at fair value 0 2 0 2  
Other assets, measured at fair value 309 142 309 142  
Loss on loans and leases written down to zero 43 56 78 86  
Nonrecurring | Level 3          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value 0 49 0 49  
Loans and leases, measured at fair value 609 1,128 609 1,128  
Foreclosed properties, measured at fair value 83 119 83 119  
Other assets, measured at fair value $ 0 $ 0 $ 0 $ 0