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, 2020	$ 19,642	$ 18,801	$ 7	$ 6,814	$ (15,719)	$ 28,953	$ (1,254)	$ 841
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	(622)	(704)				(704)		82
Dividends on common stock	(400)	(400)				(400)
Stock-based compensation expense	28	28		28
Transactions in connection with stock-based compensation plans	(13)	(13)		(32)	19
Distributions to noncontrolling interests	(2)							(2)
Other comprehensive income (loss)	94	89					89	5
Balance as of end of period at Mar. 31, 2021	18,727	17,801	7	6,810	(15,700)	27,849	(1,165)	926
Balance as of beginning of period at Dec. 31, 2021	19,817	18,430	7	6,827	(15,677)	28,281	(1,008)	1,387
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	967	905				905		62
Dividends on common stock	(401)	(401)				(401)
Stock-based compensation expense	32	32		32
Transactions in connection with stock-based compensation plans	(18)	(18)		(27)	9
Open market stock purchases	(126)	(126)			(126)
Contributions from noncontrolling interests	165							165
Distributions to noncontrolling interests	(2)							(2)
Other comprehensive income (loss)	(24)	(1)					(1)	(23)
Balance as of end of period at Mar. 31, 2022	$ 20,410	$ 18,821	$ 7	$ 6,832	$ (15,794)	$ 28,785	$ (1,009)	$ 1,589