Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net income	$ 465	$ 830	$ 1,117	$ 398
Other comprehensive income (loss):
Foreign currency translation adjustment	(64)	(91)	(268)	32
Pension and other postretirement benefits:
Gain arising during the period related to remeasurement due to plan amendments	0	0	328	0
(Gain) loss reclassified into income related to:
Net actuarial loss	15	9	29	17
Prior service credit	(9)	(6)	(15)	(10)
Net gain on pension and other postretirement benefits	6	3	342	7
Derivative instruments designated and qualifying as cash flow hedges:
Net gain (loss) arising during the period	(10)	(31)	(9)	16
Net (gain) loss reclassified into income	8	12	5	(36)
Net loss on cash flow hedges	(2)	(19)	(4)	(20)
Other comprehensive income (loss), before income tax expense (benefit)	(60)	(107)	70	19
Income tax expense (benefit) related to items of other comprehensive income (loss)	1	(5)	118	(4)
Other comprehensive income (loss)	(61)	(102)	(48)	23
Comprehensive income	404	728	1,069	421
Less: Comprehensive loss attributable to noncontrolling interests	(1)	(1)	(3)	(1)
Comprehensive income attributable to Valero Energy Corporation stockholders	$ 405	$ 729	$ 1,072	$ 422