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Valero Energy Partners LP (Details)			9 Months Ended
Valero Energy Partners LP (Details)	Oct. 01, 2015 USD ($) shares	Mar. 01, 2015 USD ($) shares	Sep. 30, 2015 USD ($) refineries	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2013 USD ($)
Valero Energy Partners LP Transactions (Textual)
Number of refineries impacted by VLP operations \| refineries			7
Cash and temporary cash investments			$ 5,301,000,000	$ 3,689,000,000	$ 4,191,000,000	$ 4,292,000,000
Noncontrolling interests			547,000,000	$ 567,000,000
VLP Revolver [Member] \| Line of Credit [Member]
Valero Energy Partners LP Transactions (Textual)
Cash consideration funded through borrowing by VLP under its revolving credit facility			$ 200,000,000
Valero Energy Partners LP [Member] \| General Partner [Member]
Ownership percentages of VLP
Limited partnership, ownership percentage by parent			2.00%	2.00%
Valero Energy Partners LP [Member] \| Limited Partner [Member]
Ownership percentages of VLP
Limited partnership, ownership percentage by parent			69.60%	68.60%
Limited partnership, ownership percentage by noncontrolling owners			28.40%	29.40%
Valero Energy Partners LP [Member]
Valero Energy Partners LP Transactions (Textual)
Cash and temporary cash investments			$ 51,000,000	$ 237,000,000
Noncontrolling interests			$ 385,000,000	$ 375,000,000
Valero Energy Partners LP [Member] \| Houston and St. Charles Terminal Services Business [Member]
Valero Energy Partners LP Transactions (Textual)
Proceeds from the sale of property and equipment		$ 571,000,000
Aggregate value of partnership interest received		100,000,000
Valero Energy Partners LP [Member] \| Houston and St. Charles Terminal Services Business [Member] \| Valero Energy Partners LP [Member]
Valero Energy Partners LP Transactions (Textual)
Cash consideration funded with VLP cash on hand		211,000,000
Valero Energy Partners LP [Member] \| Houston and St. Charles Terminal Services Business [Member] \| Valero Energy Partners LP [Member] \| Subordinated Debt [Member]
Valero Energy Partners LP Transactions (Textual)
Cash consideration funded through borrowing by VLP under a subordinated credit agreement with Parent		160,000,000
Valero Energy Partners LP [Member] \| Houston and St. Charles Terminal Services Business [Member] \| Valero Energy Partners LP [Member] \| VLP Revolver [Member] \| Line of Credit [Member]
Valero Energy Partners LP Transactions (Textual)
Cash consideration funded through borrowing by VLP under its revolving credit facility		$ 200,000,000
Valero Energy Partners LP [Member] \| Corpus Christi Terminal Services Business [Member] \| Subsequent Event [Member]
Valero Energy Partners LP Transactions (Textual)
Proceeds from the sale of property and equipment	$ 395,000,000
Aggregate value of partnership interest received	70,000,000
Valero Energy Partners LP [Member] \| Corpus Christi Terminal Services Business [Member] \| Valero Energy Partners LP [Member] \| Subordinated Debt [Member] \| Subsequent Event [Member]
Valero Energy Partners LP Transactions (Textual)
Cash consideration funded through borrowing by VLP under a subordinated credit agreement with Parent	$ 395,000,000
General Partner [Member] \| Houston and St. Charles Terminal Services Business [Member]
Valero Energy Partners LP Transactions (Textual)
Units received from sale of property and equipment \| shares		38,941
General Partner [Member] \| Corpus Christi Terminal Services Business [Member] \| Subsequent Event [Member]
Valero Energy Partners LP Transactions (Textual)
Units received from sale of property and equipment \| shares	32,051
Limited Partner [Member] \| Houston and St. Charles Terminal Services Business [Member]
Valero Energy Partners LP Transactions (Textual)
Units received from sale of property and equipment \| shares		1,908,100
Limited Partner [Member] \| Corpus Christi Terminal Services Business [Member] \| Subsequent Event [Member]
Valero Energy Partners LP Transactions (Textual)
Units received from sale of property and equipment \| shares	1,570,513