Consolidated Statements of Equity (unaudited) - USD ($) $ in Millions	Total	Valero Energy Corporation Stockholders' Equity [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-controlling Interests [Member]
Balance as of beginning of period at Dec. 31, 2024	$ 27,521	$ 24,512	$ 7	$ 6,939	$ (28,178)	$ 47,016	$ (1,272)	$ 3,009
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	(652)	(595)				(595)		(57)
Dividends on common stock	(356)	(356)				(356)
Stock-based compensation expense	37	37		37
Transactions in connection with stock-based compensation plans	1	1		(32)	33
Purchases of common stock for treasury	(272)	(272)			(272)
Distributions to noncontrolling interests	(129)							(129)
Other comprehensive (loss) income	165	163					163	2
Balance as of end of period at Mar. 31, 2025	26,315	23,490	7	6,944	(28,417)	46,065	(1,109)	2,825
Balance as of beginning of period at Dec. 31, 2025	26,605	23,725	7	6,981	(30,753)	47,959	(469)	2,880
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	1,322	1,263				1,263		59
Dividends on common stock	(359)	(359)				(359)
Stock-based compensation expense	48	48		48
Transactions in connection with stock-based compensation plans	0	0		(27)	27
Purchases of common stock for treasury	(564)	(564)			(564)
Contributions from noncontrolling interests	190							190
Other comprehensive (loss) income	(308)	(243)					(243)	(65)
Balance as of end of period at Mar. 31, 2026	$ 26,934	$ 23,870	$ 7	$ 7,002	$ (31,290)	$ 48,863	$ (712)	$ 3,064