Consolidated Statements of Equity - USD ($) $ in Millions	Total	Valero Energy Partners LP [Member]	Entities Other Than Valero Energy Partners LP [Member]	Parent [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Non-controlling Interests [Member]	Non-controlling Interests [Member] Valero Energy Partners LP [Member]	Non-controlling Interests [Member] Entities Other Than Valero Energy Partners LP [Member]
Beginning balance at Dec. 31, 2014	$ 21,244			$ 20,677	$ 7	$ 7,116	$ (8,125)	$ 22,046	$ (367)	$ 567
Increase (Decrease) in Equity Roll Forward
Net income	4,101			3,990				3,990		111
Dividends on common stock	(848)			(848)				(848)
Stock-based compensation expense	59			59		59
Tax deduction in excess of stock- based compensation expense	44			44		44
Transactions in connection with stock-based compensation plans	(162)			(162)		(155)	(7)
Stock purchases under purchase program	(2,667)			(2,667)			(2,667)
Issuance of Valero Energy Partners LP common units and contributions from noncontrolling interests		$ 189	$ 5								$ 189	$ 5
Distributions to noncontrolling interests	(45)									(45)
Other comprehensive income (loss)	(566)			(566)					(566)	0
Ending balance at Dec. 31, 2015	21,354			20,527	7	7,064	(10,799)	25,188	(933)	827
Increase (Decrease) in Equity Roll Forward
Net income	2,417			2,289				2,289		128
Dividends on common stock	(1,111)			(1,111)				(1,111)
Stock-based compensation expense	68			68		68
Transactions in connection with stock-based compensation plans	(55)			(55)		(89)	34
Stock purchases under purchase program	(1,262)			(1,262)			(1,262)
Issuance of Valero Energy Partners LP common units and contributions from noncontrolling interests		11									11
Distributions to noncontrolling interests	(65)									(65)
Other	(27)			45		45		0		(72)
Other comprehensive income (loss)	(476)			(477)					(477)	1
Ending balance at Dec. 31, 2016	20,854			20,024	7	7,088	(12,027)	26,366	(1,410)	830
Increase (Decrease) in Equity Roll Forward
Net income	4,156			4,065				4,065		91
Dividends on common stock	(1,242)			(1,242)				(1,242)
Stock-based compensation expense	68			68		68
Transactions in connection with stock-based compensation plans	(63)			(63)		(82)	19
Stock purchases under purchase program	(1,307)			(1,307)			(1,307)
Issuance of Valero Energy Partners LP common units and contributions from noncontrolling interests		$ 33	$ 30								$ 33	$ 30
Distributions to noncontrolling interests	(67)									(67)
Other	(32)			(24)		(35)		11		(8)
Other comprehensive income (loss)	470			470					470	0
Ending balance at Dec. 31, 2017	$ 22,900			$ 21,991	$ 7	$ 7,039	$ (13,315)	$ 29,200	$ (940)	$ 909