Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Nonrecurring Fair Value (Details)

v3.5.0.2
Fair Value Measurements - Nonrecurring Fair Value (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value $ 4,652   $ 4,652   $ 4,818
Loans and leases, measured at fair value 8,108   8,108   6,938
Other assets, measured at fair value 13,891   13,891   $ 14,320
Nonrecurring          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Gains (Losses) on loans held-for-sale (1) $ 0 (44) $ (7)  
Gains (Losses) on loans and leases (143) (228) (399) (811)  
Gains (Losses) on foreclosed properties (23) (36) (41) (58)  
Gains (Losses) on other assets (18) (4) (44) (8)  
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 1,300 1,300 1,300 1,300  
Nonrecurring | Level 2          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value 191 10 191 10  
Loans and leases, measured at fair value 0 67 0 67  
Foreclosed properties, measured at fair value 0 0 0 0  
Other assets, measured at fair value 173 39 173 39  
Loan loss write-offs 48 72 $ 112 146  
Period of gain/(loss) after transfer of loan to a foreclosed properties     90 days    
Nonrecurring | Level 3          
Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis          
Loans held-for-sale, measured at fair value 48 34 $ 48 34  
Loans and leases, measured at fair value 1,333 2,363 1,333 2,363  
Foreclosed properties, measured at fair value 113 149 113 149  
Other assets, measured at fair value $ 0 $ 0 $ 0 $ 0