Annual report pursuant to Section 13 and 15(d)

OTHER COMPREHENSIVE INCOME - Reclassifications (Details)

v3.10.0.1
OTHER COMPREHENSIVE INCOME - Reclassifications (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest income—held-to-maturity securities—taxable $ 211 $ 193 $ 138
Debt and Equity Securities, Gain (Loss) (21) 0 2
Noninterest income—net gains (losses) on sale of securities, OTTI 0 (4) (2)
Interest income - loans and leases 3,305 2,838 2,178
Noninterest income - other income 180 185 157
Noninterest income / expense (1) 1,559 1,524 $ 1,349
Net of tax (36) (28)  
Unrealized gains (losses) on cash flow hedging derivatives      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Net of tax 0 (1)  
Unrealized gains (losses) for pension and other post-retirement obligations      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Net of tax (4) (10)  
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains and (losses) on securities      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest income—held-to-maturity securities—taxable (13) (8)  
Debt and Equity Securities, Gain (Loss) (28) (14)  
Noninterest income—net gains (losses) on sale of securities, OTTI 0 (4)  
Total before tax (41) (26)  
Tax benefit 9 9  
Net of tax (32) (17)  
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on cash flow hedging derivatives      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Total before tax 0 (1)  
Tax benefit 0 0  
Net of tax 0 (1)  
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) on cash flow hedging derivatives | Interest Rate Contract      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest income - loans and leases 0 (1)  
Reclassification out of Accumulated Other Comprehensive Income | Unrealized gains (losses) for pension and other post-retirement obligations      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Total before tax (9) (16)  
Tax benefit 2 6  
Net of tax (7) (10)  
Reclassification out of Accumulated Other Comprehensive Income | Actuarial losses      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Noninterest income / expense (1) (13) (18)  
Reclassification out of Accumulated Other Comprehensive Income | Net periodic benefit costs      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Noninterest income / expense (1) $ 4 $ 2