Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Operating revenues	$ 4,250	$ 3,845	$ 8,183	$ 6,899
Fuel, purchased power costs, and delivery fees	(1,974)	(1,597)	(4,421)	(3,313)
Operating costs	(733)	(628)	(1,426)	(1,126)
Depreciation and amortization	(541)	(437)	(1,063)	(840)
Selling, general, and administrative expenses	(419)	(375)	(810)	(726)
Impairment of long-lived assets	(68)	0	(68)	0
Operating income	515	808	395	894
Other income, net	191	59	186	146
Interest expense and related charges	(303)	(241)	(622)	(411)
Impacts of Tax Receivable Agreement	0	0	0	(5)
Net income (loss) before income taxes	403	626	(41)	624
Income tax (expense) benefit	(76)	(159)	100	(139)
Net income	327	467	59	485
Net income attributable to noncontrolling interest	0	(102)	0	(155)
Net income attributable to Vistra	327	365	59	330
Cumulative dividends attributable to preferred stock	(47)	(47)	(96)	(96)
Net income (loss) attributable to Vistra common stock	$ 280	$ 318	$ (37)	$ 234
Weighted average shares of common stock outstanding:
Weighted average shares of common stock outstanding - basic (in shares)	339,401,983	347,046,021	339,599,887	348,006,109
Weighted average shares of common stock outstanding - diluted (in shares)	345,505,188	354,327,393	339,599,887	355,555,429
Net income (loss) per weighted average share of common stock outstanding:
Net Income (loss) per weighted average share of common stock outstanding - basic (in dollars per share)	$ 0.82	$ 0.92	$ (0.11)	$ 0.67
Net income (loss) per weighted average share of common stock outstanding - diluted (in dollars per share)	$ 0.81	$ 0.90	$ (0.11)	$ 0.66