Consolidated Statements of Income (unaudited) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues	[1]	$ 15,809	$ 27,249	$ 48,308	$ 80,445
Cost of sales:
Cost of materials and other		14,801	24,335	43,832	72,396
Lower of cost or market (LCM) inventory valuation adjustment		(313)	0	(19)	0
Operating expenses (excluding depreciation and amortization expense reflected below)		1,117	1,239	3,268	3,629
Depreciation and amortization expense		602	556	1,737	1,645
Total cost of sales		16,207	26,130	48,818	77,670
Other operating expenses		25	10	30	14
General and administrative expenses (excluding depreciation and amortization expense reflected below)		186	217	532	625
Depreciation and amortization expense		12	11	37	39
Operating income (loss)		(621)	881	(1,109)	2,097
Other income, net		48	34	107	68
Interest and debt expense, net of capitalized interest		(143)	(111)	(410)	(335)
Income (loss) before income tax expense (benefit)		(716)	804	(1,412)	1,830
Income tax expense (benefit)		(337)	165	(614)	376
Net income (loss)		(379)	639	(798)	1,454
Less: Net income attributable to noncontrolling interests		85	30	264	92
Net income (loss) attributable to Valero Energy Corporation stockholders		$ (464)	$ 609	$ (1,062)	$ 1,362
Earnings (loss) per common share (in dollars per share)		$ (1.14)	$ 1.48	$ (2.62)	$ 3.28
Weighted-average common shares outstanding (in shares)		407	412	407	415
Earnings (loss) per common share – assuming dilution (in dollars per share)		$ (1.14)	$ 1.48	$ (2.62)	$ 3.28
Weighted-average common shares outstanding – assuming dilution (in shares)		407	413	407	416
Supplemental information:
Includes excise taxes on sales by certain of our international operations		$ 1,339	$ 1,399	$ 3,491	$ 4,139

[1] Includes excise taxes on sales by certain of our international operations of $1,339 million and $1,399 million for the three months ended September 30, 2020 and 2019, respectively, and $3,491 million and $4,139 million for the nine months ended September 30, 2020 and 2019, respectively.