Organization and Basis of Presentation WNRL Acquisition (Details) - USD ($) $ in Millions |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Oct. 30, 2017 |
Sep. 30, 2017 |
Dec. 31, 2016 |
Feb. 27, 2017 |
|
| Incentive Distribution, Distribution | $ 38.0 | $ 12.5 | ||
| Common units issued (units) | 108,075,130 | 102,981,495 | 5,000,000 | |
| Subsequent Event | WNRL Merger | ||||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 0.4921 | |||
| Subsequent Event | Western Refining Logistics | WNRL Merger | ||||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 0.5233 | |||
| Subsequent Event | Andeavor [Member] | WNRL Merger | ||||
| Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | 0.4639 | |||
| Subsequent Event | Minimum | ||||
| Incentive Distribution, Distribution | $ 60.0 | |||
| Subsequent Event | Maximum [Member] | ||||
| Incentive Distribution, Distribution | $ 160.0 | |||
| IDR/GP Transaction | Subsequent Event | ||||
| Common units issued (units) | 78,000,000 |