Quarterly report pursuant to Section 13 or 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME - Changes in AOCI (loss) related to shareholders' equity (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME - Changes in AOCI (loss) related to shareholders' equity (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     $ 1,830  
Ending balance $ 1,647 $ 810 1,647 $ 810
Foreign Currency Translation        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (1) (1) (1) 1
Other comprehensive income (loss) before reclassifications, net of tax 0 (2) 0 (4)
Ending balance (1) (3) (1) (3)
Derivative Instruments        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (150) 109 (16) 68
Other comprehensive income (loss) before reclassifications (21) 154 (229) 292
Income tax 5 (38) 56 (69)
Other comprehensive income (loss) before reclassifications, net of tax (16) 116 (173) 223
(Gains) losses reclassified from AOCI to net income 63 (74) 93 (158)
Income tax expense (benefit) (16) 19 (23) 37
Net losses (gains) reclassified from AOCI to net income 47 (55) 70 (121)
Ending balance (119) 170 (119) 170
Pension and OPEB        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance 1,794 550 1,847 549
Other comprehensive income (loss) before reclassifications 0 119 0 119
Income tax 0 (28) 0 (28)
Other comprehensive income (loss) before reclassifications, net of tax 0 91 0 91
(Gains) losses reclassified from AOCI to net income (35) 3 (106) 4
Income tax expense (benefit) 8 (1) 26 (1)
Net losses (gains) reclassified from AOCI to net income (27) 2 (80) 3
Ending balance $ 1,767 $ 643 $ 1,767 $ 643