Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings (loss) per common share:
Net income (loss) attributable to Valero stockholders	$ 930	$ (1,421)	$ 2,422
Less: Income allocated to participating securities	6	5	7
Net income (loss) available to common stockholders	$ 924	$ (1,426)	$ 2,415
Weighted-average common shares outstanding (shares)	407	407	413
Earnings (loss) per common share (in usd per share)	$ 2.27	$ (3.50)	$ 5.84
Earnings (loss) per common share – assuming dilution:
Net income (loss) attributable to Valero stockholders	$ 930	$ (1,421)	$ 2,422
Less: Income allocated to participating securities	6	5	7
Net income (loss) available to common stockholders	$ 924	$ (1,426)	$ 2,415
Weighted-average common shares outstanding (shares)	407	407	413
Effect of dilutive securities (shares)	0	0	1
Weighted-average common shares outstanding – assuming dilution (shares)	407	407	414
Earnings (loss) per common share – assuming dilution (in usd per share)	$ 2.27	$ (3.50)	$ 5.84