Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Operating revenues	$ 34,034	$ 34,662	$ 67,508	$ 69,829
Costs and expenses:
Cost of sales	31,523	31,621	62,208	64,656
Operating expenses:
Refining	906	868	1,782	1,832
Retail	57	170	226	336
Ethanol	102	85	179	172
General and administrative expenses	233	171	409	335
Depreciation and amortization expense	405	386	835	770
Asset impairment losses	0	0	0	611
Total costs and expenses	33,226	33,301	65,639	68,712
Operating income	808	1,361	1,869	1,117
Other income (expense), net	11	(5)	25	1
Interest and debt expense, net of capitalized interest	(78)	(74)	(161)	(173)
Income before income tax expense	741	1,282	1,733	945
Income tax expense	276	452	616	547
Net income	465	830	1,117	398
Less: Net loss attributable to noncontrolling interests	(1)	(1)	(3)	(1)
Net income attributable to Valero Energy Corporation stockholders	$ 466	$ 831	$ 1,120	$ 399
Earnings per common share	$ 0.86	$ 1.50	$ 2.04	$ 0.72
Weighted-average common shares outstanding (in millions)	543	550	546	550
Earnings per common share – assuming dilution	$ 0.85	$ 1.50	$ 2.03	$ 0.72
Weighted-average common shares outstanding - assuming dilution (in millions)	548	555	552	556
Dividends per common share	$ 0.20	$ 0.15	$ 0.40	$ 0.30