Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings per common share:
Net income attributable to Valero stockholders	$ 1,944	$ 4,693	$ 5,011	$ 5,598
Less: Income allocated to participating securities	6	17	16	20
Net income available to common stockholders	$ 1,938	$ 4,676	$ 4,995	$ 5,578
Weighted-average common shares outstanding (in shares)	358	404	363	406
Earnings per common share (in dollars per share)	$ 5.41	$ 11.58	$ 13.75	$ 13.75
Earnings per common share – assuming dilution:
Net income attributable to Valero stockholders	$ 1,944	$ 4,693	$ 5,011	$ 5,598
Less: Income allocated to participating securities	6	17	16	20
Net income available to common stockholders	$ 1,938	$ 4,676	$ 4,995	$ 5,578
Weighted-average common shares outstanding (in shares)	358	404	363	406
Effect of dilutive securities (in shares)	0	0	0	0
Weighted-average common shares outstanding – assuming dilution (in shares)	358	404	363	406
Earnings per common share – assuming dilution (in dollars per share)	$ 5.40	$ 11.57	$ 13.74	$ 13.74