Consolidated Statements of Equity - 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)	1,077	1,214				1,214		(137)
Dividends on common stock	(1,061)	(1,061)				(1,061)
Stock-based compensation expense	68	68		68
Transactions in connection with stock-based compensation plans	1	1		(35)	36
Purchases of common stock for treasury	(1,544)	(1,544)			(1,544)
Contributions from noncontrolling interests	245							245
Distributions to noncontrolling interests	(131)							(131)
Other comprehensive income (loss)	570	564					564	6
Balance as of end of period at Sep. 30, 2025	26,746	23,754	7	6,972	(29,686)	47,169	(708)	2,992
Balance as of beginning of period at Jun. 30, 2025	26,947	24,078	7	6,956	(28,757)	46,425	(553)	2,869
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	1,066	1,095				1,095		(29)
Dividends on common stock	(351)	(351)				(351)
Stock-based compensation expense	18	18		18
Transactions in connection with stock-based compensation plans	0	0		(2)	2
Purchases of common stock for treasury	(931)	(931)			(931)
Contributions from noncontrolling interests	148							148
Other comprehensive income (loss)	(151)	(155)					(155)	4
Balance as of end of period at Sep. 30, 2025	26,746	23,754	7	6,972	(29,686)	47,169	(708)	2,992
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)	12,384	11,811				11,811		573
Dividends on common stock	(1,059)	(1,059)				(1,059)
Stock-based compensation expense	70	70		70
Transactions in connection with stock-based compensation plans	0	0		(26)	26
Purchases of common stock for treasury	(6,245)	(6,245)			(6,245)
Contributions from noncontrolling interests	192							192
Distributions to noncontrolling interests	(454)							(454)
Other comprehensive income (loss)	(409)	(328)					(328)	(81)
Balance as of end of period at Sep. 30, 2026	31,084	27,974	7	7,025	(36,972)	58,711	(797)	3,110
Balance as of beginning of period at Jun. 30, 2026	28,268	25,001	7	7,014	(33,575)	52,228	(673)	3,267
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income (loss)	6,989	6,828				6,828		161
Dividends on common stock	(345)	(345)				(345)
Stock-based compensation expense	10	10		10
Transactions in connection with stock-based compensation plans	0	0		1	(1)
Purchases of common stock for treasury	(3,396)	(3,396)			(3,396)
Contributions from noncontrolling interests	1							1
Distributions to noncontrolling interests	(232)							(232)
Other comprehensive income (loss)	(211)	(124)					(124)	(87)
Balance as of end of period at Sep. 30, 2026	$ 31,084	$ 27,974	$ 7	$ 7,025	$ (36,972)	$ 58,711	$ (797)	$ 3,110