Consolidated Statements of Income (unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenues	[1]	$ 30,849	$ 23,562	$ 88,303	$ 67,588
Cost of sales:
Cost of materials and other		27,701	20,329	79,317	59,366
Operating expenses (excluding depreciation and amortization expense reflected below)		1,193	1,135	3,439	3,370
Depreciation and amortization expense		504	484	1,499	1,457
Total cost of sales		29,398	21,948	84,255	64,193
Other operating expenses		10	44	41	44
General and administrative expenses (excluding depreciation and amortization expense reflected below)		209	225	695	592
Depreciation and amortization expense		13	13	39	39
Operating income		1,219	1,332	3,273	2,720
Other income, net		42	23	88	76
Interest and debt expense, net of capitalized interest		(111)	(114)	(356)	(354)
Income before income tax expense		1,150	1,241	3,005	2,442
Income tax expense		276	378	674	686
Net income		874	863	2,331	1,756
Less: Net income attributable to noncontrolling interests		18	22	161	62
Net income attributable to Valero Energy Corporation stockholders		$ 856	$ 841	$ 2,170	$ 1,694
Earnings per common share (in dollars per share)		$ 2.01	$ 1.91	$ 5.05	$ 3.80
Weighted-average common shares outstanding (in shares)		425	439	428	444
Earnings per common share – assuming dilution (in dollars per share)		$ 2.01	$ 1.91	$ 5.05	$ 3.80
Weighted-average common shares outstanding – assuming dilution (in shares)		427	441	430	446

[1] Includes excise taxes on sales by certain of our international operations of $1,338 million and $1,447 million for the three months ended September 30, 2018 and 2017, respectively, and $4,272 million and $4,103 million for the nine months ended September 30, 2018 and 2017, respectively.