Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Earnings per common share:
Net income attributable to Valero stockholders	$ 2,348	$ 2,770	$ 8,835
Less: Income allocated to participating securities	7	8	27
Net income available to common stockholders	$ 2,341	$ 2,762	$ 8,808
Weighted-average common shares outstanding (shares)	309	322	353
Earnings per common share (in dollars per share)	$ 7.57	$ 8.58	$ 24.93
Earnings per common share – assuming dilution:
Net income attributable to Valero stockholders	$ 2,348	$ 2,770	$ 8,835
Less: Income allocated to participating securities	7	8	27
Net income available to common stockholders	$ 2,341	$ 2,762	$ 8,808
Weighted-average common shares outstanding (shares)	309	322	353
Effect of dilutive securities (shares)	0	0	0
Weighted-average common shares outstanding – assuming dilution (shares)	309	322	353
Earnings per common share – assuming dilution (in dollars per share)	$ 7.57	$ 8.58	$ 24.92