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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Statement of Comprehensive Income [Abstract]    
Net income $ 750 $ 53
Other comprehensive income (loss), before tax:    
Pension and other postretirement expense 0 (2)
Other comprehensive income of equity investees 1 0
Other comprehensive income (loss), before tax 1 (2)
Income tax benefit related to items of other comprehensive loss 0 0
Other comprehensive income (loss), net of tax 1 (2)
Total comprehensive income $ 751 $ 51