Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings (loss) per common share:
Net income (loss) attributable to Valero stockholders	$ 2,817	$ 463	$ 8,415	$ (79)
Less: Income allocated to participating securities	11	1	31	4
Net income (loss) available to common stockholders	$ 2,806	$ 462	$ 8,384	$ (83)
Weighted-average common shares outstanding (in shares)	390	407	400	407
Earnings (loss) per common share (in dollars per share)	$ 7.20	$ 1.13	$ 20.94	$ (0.20)
Earnings (loss) per common share – assuming dilution:
Net income (loss) attributable to Valero stockholders	$ 2,817	$ 463	$ 8,415	$ (79)
Less: Income allocated to participating securities	11	1	31	4
Net income (loss) available to common stockholders	$ 2,806	$ 462	$ 8,384	$ (83)
Weighted-average common shares outstanding (in shares)	390	407	400	407
Effect of dilutive securities (in shares)	0	1	1	0
Weighted-average common shares outstanding – assuming dilution (in shares)	390	408	401	407
Earnings (loss) per common share – assuming dilution (in dollars per share)	$ 7.19	$ 1.13	$ 20.93	$ (0.20)