Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			12 Months Ended			12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2013 plants refineries branded_wholesale_sites	Dec. 31, 2011	Aug. 01, 2011	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Valero Energy Partners LP [Member]	Dec. 31, 2013 Diamond Green Holdings LLC [Member]	Dec. 31, 2013 Diamond Green Holdings LLC [Member] Variable Interest Entity, Primary Beneficiary [Member]	Dec. 31, 2013 Diamond Green Holdings LLC [Member] Variable Interest Entity, Not Primary Beneficiary [Member]	Dec. 31, 2012 PI Dock Facilities LLC [Member]	Dec. 31, 2013 PI Dock Facilities LLC [Member]	Dec. 31, 2013 PI Dock Facilities LLC [Member] Variable Interest Entity, Primary Beneficiary [Member]	Dec. 31, 2013 PI Dock Facilities LLC [Member] Variable Interest Entity, Not Primary Beneficiary [Member]
Basis of Presentation and Summary of Significant Accounting Policies (Textual)
Number of refineries owned	16
Combined total throughput capacity of petroleum refining	3,100,000
Number of branded wholesale sites	7,400
Number of ethanol plants owned	10
Combined capacity of ethanol (gallons per year)	1,200,000,000
Noncontrolling interest, ownership percentage by parent		15.00%	85.00%			70.60%
Feed capacity of diesel plants							10,000
Joint venture ownership percentage								50.00%	50.00%			50.00%	50.00%
Amount of joint venture construction financing							$ 221			$ 90	$ 13
Property, plant, and equipment, useful life				25 years	30 years