Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings (loss) per common share:
Net income (loss) attributable to Valero stockholders	$ 905	$ (704)
Less: Income allocated to participating securities	3	1
Net income (loss) available to common stockholders	$ 902	$ (705)
Weighted-average common shares outstanding (in shares)	408	407
Earnings (loss) per common share (in dollars per share)	$ 2.21	$ (1.73)
Earnings (loss) per common share – assuming dilution:
Net income (loss) attributable to Valero stockholders	$ 905	$ (704)
Less: Income allocated to participating securities	3	1
Net income (loss) available to common stockholders	$ 902	$ (705)
Weighted-average common shares outstanding (in shares)	408	407
Effect of dilutive securities (in shares)	0	0
Weighted-average common shares outstanding – assuming dilution (in shares)	408	407
Earnings (loss) per common share – assuming dilution (in dollars per share)	$ 2.21	$ (1.73)