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Valero Energy Partners LP (Details) $ / shares in Units, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 24, 2015 USD ($) $ / shares shares | Dec. 16, 2013 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) refineries | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($)
Noncontrolling Interest Transactions (Textual) |  |  |  |  |  |
Number of refineries impacted by VLP operations | refineries |  |  | 9 |  |  |
Net proceeds from issuance of Valero Energy Partners LP common units |  |  | $ 189 | $ 0 | $ 369 |
Cash and temporary cash investments |  |  | 4,114 | 3,689 | $ 4,292 | $ 1,723
Noncontrolling interests |  |  | $ 827 | $ 567 |  |
Valero Energy Partners LP [Member] | General Partner [Member] |  |  |  |  |  |
Ownership percentages of VLP |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  | 2.00% | 2.00% |  |
Valero Energy Partners LP [Member] | Limited Partner [Member] |  |  |  |  |  |
Ownership percentages of VLP |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  | 65.70% | 68.60% |  |
Noncontrolling interest, ownership percentage by public |  |  | 32.30% | 29.40% |  |
Valero Energy Partners LP [Member] |  |  |  |  |  |
Noncontrolling Interest Transactions (Textual) |  |  |  |  |  |
Cash and temporary cash investments |  |  | $ 81 | $ 237 |  |
Noncontrolling interests |  |  | $ 581 | $ 375 |  |
Valero Energy Partners LP [Member] | IPO [Member] |  |  |  |  |  |
Noncontrolling Interest Transactions (Textual) |  |  |  |  |  |
Units sold in the offering | shares |  | 17,250,000 |  |  |  |
Price per unit | $ / shares |  | $ 23.00 |  |  |  |
Net proceeds from issuance of Valero Energy Partners LP common units |  | $ 369 |  |  |  |
Valero Energy Partners LP [Member] | Public Offering [Member] |  |  |  |  |  |
Noncontrolling Interest Transactions (Textual) |  |  |  |  |  |
Units sold in the offering | shares | 4,250,000 |  |  |  |  |
Price per unit | $ / shares | $ 46.25 |  |  |  |  |
Net proceeds from issuance of Valero Energy Partners LP common units | $ 189 |  |  |  |  |
Valero Energy Partners LP [Member] | General Partner [Member] |  |  |  |  |  |
Noncontrolling Interest Transactions (Textual) |  |  |  |  |  |
Units sold in the offering | shares | 86,735 |  |  |  |  |
General partner contribution to maintain interest in VLP | $ 4 |  |  |  |  |

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