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)	(330)	(542)				(542)		212
Dividends on common stock	(801)	(801)				(801)
Stock-based compensation expense	41	41		41
Transactions in connection with stock-based compensation plans	2	2		(36)	38
Purchases of common stock for treasury	(15)	(15)			(15)
Distributions to noncontrolling interests	(2)							(2)
Other comprehensive income (loss)	167	165					165	2
Balance as of end of period at Jun. 30, 2021	18,704	17,651	7	6,819	(15,696)	27,610	(1,089)	1,053
Balance as of beginning of period at Mar. 31, 2021	18,727	17,801	7	6,810	(15,700)	27,849	(1,165)	926
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	292	162				162		130
Dividends on common stock	(401)	(401)				(401)
Stock-based compensation expense	13	13		13
Transactions in connection with stock-based compensation plans	1	1		(4)	5
Purchases of common stock for treasury	(1)	(1)			(1)
Other comprehensive income (loss)	73	76					76	(3)
Balance as of end of period at Jun. 30, 2021	18,704	17,651	7	6,819	(15,696)	27,610	(1,089)	1,053
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)	5,735	5,598				5,598		137
Dividends on common stock	(800)	(800)				(800)
Stock-based compensation expense	47	47		47
Transactions in connection with stock-based compensation plans	3	3		(29)	32
Purchases of common stock for treasury	(1,892)	(1,892)			(1,892)
Contributions from noncontrolling interests	240							240
Distributions to noncontrolling interests	(3)							(3)
Other comprehensive income (loss)	(414)	(417)					(417)	3
Balance as of end of period at Jun. 30, 2022	22,733	20,969	7	6,845	(17,537)	33,079	(1,425)	1,764
Balance as of beginning of period at Mar. 31, 2022	20,410	18,821	7	6,832	(15,794)	28,785	(1,009)	1,589
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	4,768	4,693				4,693		75
Dividends on common stock	(399)	(399)				(399)
Stock-based compensation expense	15	15		15
Transactions in connection with stock-based compensation plans	3	3		(2)	5
Purchases of common stock for treasury	(1,748)	(1,748)			(1,748)
Contributions from noncontrolling interests	75							75
Distributions to noncontrolling interests	(1)							(1)
Other comprehensive income (loss)	(390)	(416)					(416)	26
Balance as of end of period at Jun. 30, 2022	$ 22,733	$ 20,969	$ 7	$ 6,845	$ (17,537)	$ 33,079	$ (1,425)	$ 1,764