v3.26.3
LONG-TERM DEBT AND SHAREHOLDERS' EQUITY (Changes In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period $ 7,681 $ 6,596 $ 7,180 $ 6,124
Other comprehensive income (loss) before reclassifications, net of tax     (200) 148
Amounts reclassified from AOCI, net of tax     152 176
Other comprehensive income (loss), net of tax (122) 108 (48) 324
Balance at end of period 7,684 6,865 7,684 6,865
Income tax expense (benefit) included in other comprehensive income     (16) 106
Total        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period (1,867) (2,164) (1,941) (2,380)
Balance at end of period (1,989) (2,056) (1,989) (2,056)
Net unrealized gains (losses) on investment securities        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (1,917) (2,301)
Other comprehensive income (loss) before reclassifications, net of tax     (109) 142
Amounts reclassified from AOCI, net of tax     127 137
Other comprehensive income (loss), net of tax     18 279
Balance at end of period (1,899) (2,022) (1,899) (2,022)
Income tax expense (benefit) included in other comprehensive income     4 91
Net unrealized gains (losses) on derivatives and other        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (23) (78)
Other comprehensive income (loss) before reclassifications, net of tax     (91) 6
Amounts reclassified from AOCI, net of tax     25 39
Other comprehensive income (loss), net of tax     (66) 45
Balance at end of period (89) (33) (89) (33)
Income tax expense (benefit) included in other comprehensive income     (20) 15
Pension and post-retirement        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     (1) (1)
Other comprehensive income (loss) before reclassifications, net of tax     0 0
Amounts reclassified from AOCI, net of tax     0 0
Other comprehensive income (loss), net of tax     0 0
Balance at end of period $ (1) $ (1) (1) (1)
Income tax expense (benefit) included in other comprehensive income     $ 0 $ 0