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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Statement of Comprehensive Income [Abstract]      
Net income (loss) $ 1,492 $ (1,210) $ (1,264)
Other comprehensive income (loss), net of tax effects:      
Effects related to pension and other retirement benefit obligations (net of tax expense of $—, $7 and $9) (1) 23 32
Total other comprehensive income (loss) (1) 23 32
Comprehensive income (loss) 1,491 (1,187) (1,232)
Comprehensive (income) loss attributable to noncontrolling interest 1 (17) (10)
Comprehensive income (loss) attributable to Vistra $ 1,492 $ (1,204) $ (1,242)