Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Nonrecurring Fair Value (Details)

v3.6.0.2
Fair Value Measurements - Nonrecurring Fair Value (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale, measured at fair value $ 4,026 $ 4,818  
Loans and leases, measured at fair value 7,085 6,938  
Other assets, measured at fair value 13,802 14,320  
Nonrecurring      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Gains (Losses) on loans held-for-sale (54) (8) $ (19)
Gains (Losses) on loans and leases (458) (993) (1,152)
Gains (Losses) on foreclosed properties (41) (57) (66)
Gains (Losses) on other assets (74) (28) (26)
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 1,200 1,400  
Nonrecurring | Level 2      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale, measured at fair value 193 9  
Loans and leases, measured at fair value 0 34  
Foreclosed properties, measured at fair value 0 0  
Other assets, measured at fair value 358 88  
Loss on loans and leases written down to zero 150 174 $ 370
Nonrecurring | Level 3      
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis      
Loans held-for-sale, measured at fair value 44 33  
Loans and leases, measured at fair value 1,416 2,739  
Foreclosed properties, measured at fair value 77 172  
Other assets, measured at fair value $ 0 $ 0