Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (268)	$ 18
Other comprehensive income, net of tax effects:
Effects related to pension and other retirement benefit obligations (net of tax expense of $— and $—)	0	0
Total other comprehensive income	0	0
Comprehensive income (loss)	(268)	18
Comprehensive income attributable to noncontrolling interest	0	(53)
Net loss attributable to Vistra	$ (268)	$ (35)