Quarterly report pursuant to Section 13 or 15(d)

OTHER COMPREHENSIVE INCOME - Reclassifications (Details)

v3.10.0.1
OTHER COMPREHENSIVE INCOME - Reclassifications (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Interest income - held-to-maturity securities - taxable $ 53 $ 44 $ 107 $ 89
Noninterest income - net gains (losses) on sale of securities 0 4 0 4
Interest income - loans and leases 810 700 1,566 1,376
Noninterest income - other income 45 50 87 96
Noninterest expense - personnel costs (396) (392) (772) (774)
Income before income taxes 412 351 797 618
Provision for income taxes (57) (79) (116) (138)
Net income applicable to common shares 334 253 648 442
Unrealized gains and (losses) on debt securities | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Interest income - held-to-maturity securities - taxable (3) (2) (6) (6)
Noninterest income - net gains (losses) on sale of securities 0 2 (12) 0
Accumulated OTTI | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Noninterest income - net gains (losses) on sale of securities 0 (4) 0 (4)
Unrealized gains and (losses) on debt securities and Accumulated OTTI | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes (3) (4) (18) (10)
Provision for income taxes 0 1 3 3
Net income applicable to common shares (3) (3) (15) (7)
Unrealized gains and (losses) on cash flow hedging derivatives | Interest Rate Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Interest income - loans and leases     0 (1)
Noninterest income - other income     0 0
Income before income taxes     0 (1)
Provision for income taxes     0 0
Net income applicable to common shares     0 (1)
Amortization of defined benefit pension and post-retirement items: actuarial gains (losses) | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Noninterest expense - personnel costs (1) (2) (3) (3)
Amortization of defined benefit pension and post-retirement items: Prior service credit | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Noninterest expense - personnel costs 0 1 1 1
Unrealized gains (losses) for pension and other post- retirement obligations | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]        
Income before income taxes (1) (1) (2) (2)
Provision for income taxes 0 0 0 1
Net income applicable to common shares $ (1) $ (1) $ (2) $ (1)