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CONDENSED STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Statement of Comprehensive Income [Abstract]        
Adjustment to pension and other postretirement plans, tax $ 0 $ 0 $ 0 $ 0
Net deferred gain from cash flow hedges, tax 0 1 0 1
Reclassification of deferred gain from cash flow hedges realized in net income net of tax $ 0 $ 0 $ 0 $ 0