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, 2023	$ 28,524	$ 26,346	$ 7	$ 6,901	$ (25,322)	$ 45,630	$ (870)	$ 2,178
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income	2,649	2,489				2,489		160
Dividends on common stock	(1,045)	(1,045)				(1,045)
Stock-based compensation expense	63	63		63
Transactions in connection with stock-based compensation plans	1	1		(24)	25
Purchases of common stock for treasury	(2,641)	(2,641)			(2,641)
Contributions from noncontrolling interests	90							90
Distributions to noncontrolling interests	(113)							(113)
Conversion of IEnova Revolver debt to equity (see Notes 4 and 6)	457							457
Other comprehensive income (loss)	15	40					40	(25)
Balance as of end of period at Sep. 30, 2024	28,000	25,253	7	6,940	(27,938)	47,074	(830)	2,747
Balance as of beginning of period at Jun. 30, 2024	28,250	25,443	7	6,929	(27,373)	47,052	(1,172)	2,807
Increase (Decrease) in Stockholders' Equity Roll Forward
Net income	393	364				364		29
Dividends on common stock	(342)	(342)				(342)
Stock-based compensation expense	11	11		11
Purchases of common stock for treasury	(565)	(565)			(565)
Distributions to noncontrolling interests	(111)							(111)
Other comprehensive income (loss)	364	342					342	22
Balance as of end of period at Sep. 30, 2024	28,000	25,253	7	6,940	(27,938)	47,074	(830)	2,747
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	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	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)
Balance as of end of period at Sep. 30, 2025	$ 26,746	$ 23,754	$ 7	$ 6,972	$ (29,686)	$ 47,169	$ (708)	$ 2,992