Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings (loss) per common share:
Net income (loss) attributable to Valero stockholders	$ 4,693	$ 162	$ 5,598	$ (542)
Less: Income allocated to participating securities	17	2	20	3
Net income (loss) available to common stockholders	$ 4,676	$ 160	$ 5,578	$ (545)
Weighted-average common shares outstanding (in shares)	404	407	406	407
Earnings (loss) per common share (in dollars per share)	$ 11.58	$ 0.39	$ 13.75	$ (1.34)
Earnings (loss) per common share – assuming dilution:
Net income (loss) attributable to Valero stockholders	$ 4,693	$ 162	$ 5,598	$ (542)
Less: Income allocated to participating securities	17	2	20	3
Net income (loss) available to common stockholders	$ 4,676	$ 160	$ 5,578	$ (545)
Weighted-average common shares outstanding (in shares)	404	407	406	407
Effect of dilutive securities (in shares)	0	0	0	0
Weighted-average common shares outstanding – assuming dilution (in shares)	404	407	406	407
Earnings (loss) per common share – assuming dilution (in dollars per share)	$ 11.57	$ 0.39	$ 13.74	$ (1.34)