Condensed Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Operating revenues	$ 3,933	$ 3,054
Fuel, purchased power costs, and delivery fees	(2,447)	(1,716)
Operating costs	(693)	(498)
Depreciation and amortization	(522)	(403)
Selling, general, and administrative expenses	(391)	(351)
Operating income (loss)	(120)	86
Other income (deductions), net	(5)	87
Interest expense and related charges	(319)	(170)
Impacts of Tax Receivable Agreement	0	(5)
Net loss before income taxes	(444)	(2)
Income tax benefit	176	20
Net income (loss)	(268)	18
Net income attributable to noncontrolling interest	0	(53)
Net loss attributable to Vistra	(268)	(35)
Cumulative dividends attributable to preferred stock	(49)	(49)
Net loss attributable to Vistra common stock	$ (317)	$ (84)
Weighted average shares of common stock outstanding:
Weighted average shares of common stock outstanding - basic (in shares)	339,799,989	348,966,197
Weighted average shares of common stock outstanding - diluted (in shares)	339,799,989	348,966,197
Net loss per weighted average share of common stock outstanding:
Net loss per weighted average share of common stock outstanding - basic (in dollars per share)	$ (0.93)	$ (0.24)
Net loss per weighted average share of common stock outstanding - diluted (in dollars per share)	$ (0.93)	$ (0.24)