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Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Income tax expense $ (55) $ 61 $ (210) $ 141
Net income (loss) (280) 207 (930) 2,626
General and administrative 188 165 557 440
Actuarial losses        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
General and administrative (1) (1) (3) (2)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Income tax expense 1 0 1 0
Reclassifications, net of tax 0 (1) (2) (2)
Reclassification from AOCI        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Net income (loss) 13 5 40 12
Reclassification from AOCI | Net gain on cash flow hedges:        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Interest expense 18 7 57 19
Income tax expense (5) (1) (15) (5)
Net income (loss) $ 13 $ 6 $ 42 $ 14