Consolidated Statements of Income (unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues	[1]	$ 31,015	$ 22,254	$ 57,454	$ 44,026
Cost of sales:
Cost of materials and other		27,860	19,609	51,616	39,037
Operating expenses (excluding depreciation and amortization expense reflected below)		1,110	1,111	2,246	2,235
Depreciation and amortization expense		510	485	995	973
Total cost of sales		29,480	21,205	54,857	42,245
Other operating expenses		21	0	31	0
General and administrative expenses (excluding depreciation and amortization expense reflected below)		248	175	486	367
Depreciation and amortization expense		13	14	26	26
Operating income		1,253	860	2,054	1,388
Other income (expense), net		(5)	27	46	53
Interest and debt expense, net of capitalized interest		(124)	(119)	(245)	(240)
Income before income tax expense		1,124	768	1,855	1,201
Income tax expense		249	196	398	308
Net income		875	572	1,457	893
Less: Net income attributable to noncontrolling interests		30	24	143	40
Net income attributable to Valero Energy Corporation stockholders		$ 845	$ 548	$ 1,314	$ 853
Earnings per common share (in dollars per share)		$ 1.96	$ 1.23	$ 3.05	$ 1.90
Weighted-average common shares outstanding (in shares)		429	444	430	446
Earnings per common share – assuming dilution (in dollars per share)		$ 1.96	$ 1.23	$ 3.04	$ 1.90
Weighted-average common shares outstanding – assuming dilution (in shares)		431	446	432	448
Dividends per common share (in dollars per share)		$ 0.8	$ 0.7	$ 1.6	$ 1.4

[1] Includes excise taxes on sales by certain of our international operations of $1,470 million and $1,384 million for the three months ended June 30, 2018 and 2017, respectively, and $2,934 million and $2,656 million for the six months ended June 30, 2018 and 2017, respectively.