Condensed Consolidated Statements of Comprehensive Income (Loss) - 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]
Net income	$ 327	$ 467	$ 59	$ 485
Other comprehensive income, net of tax effects:
Effects related to pension and other retirement benefit obligations (net of tax expense of $—, $—, $— and $—)	(1)	0	(1)	0
Total other comprehensive income (loss)	(1)	0	(1)	0
Comprehensive income	326	467	58	485
Comprehensive income attributable to noncontrolling interest	0	(102)	0	(155)
Net income attributable to Vistra	$ 326	$ 365	$ 58	$ 330