Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of earnings per common share, basic and diluted

Earnings per common share were computed as follows (dollars and shares in millions, except per share amounts):

	Year Ended December 31,
	2017				2016				2015
	Participating Securities		Common Stock		Participating Securities		Common Stock		Participating Securities		Common Stock
Earnings per common share:
Net income attributable to Valero stockholders			$	4,065			$	2,289			$	3,990
Less dividends paid:
Common stock			1,238				1,108				845
Participating securities			4				3				3
Undistributed earnings			$	2,823			$	1,178			$	3,142
Weighted-average common shares outstanding	2		442		1		461		2		497
Earnings per common share:
Distributed earnings	$	2.80	$	2.80	$	2.40	$	2.40	$	1.70	$	1.70
Undistributed earnings	6.37		6.37		2.54		2.54		6.30		6.30
Total earnings per common share	$	9.17	$	9.17	$	4.94	$	4.94	$	8.00	$	8.00
Earnings per common share – assuming dilution:
Net income attributable to Valero stockholders			$	4,065			$	2,289			$	3,990
Weighted-average common shares outstanding			442				461				497
Common equivalent shares			2				3				3
Weighted-average common shares outstanding – assuming dilution			444				464				500
Earnings per common share – assuming dilution			$	9.16			$	4.94			$	7.99