Related-Party Transactions Related-Party Transactions, Alaska Logistics Assets (Details) - Alaska Logistics Assets bbl in Millions, $ in Millions |
Sep. 16, 2016
USD ($)
|
Jul. 01, 2016
USD ($)
bbl
|
|---|---|---|
| Business Combination, Consideration Transferred | $ 444 | |
| Phase One | ||
| Business Combination, Consideration Transferred | $ 266 | |
| Capacity ratio | bbl | 3.5 | |
| Payments to Acquire Businesses, Gross | $ 240 | |
| Business Acquisition, Equity Interest Issued or Issuable, Value Assigned | $ 26 | |
| Phase Two | ||
| Business Combination, Consideration Transferred | $ 178 | |
| Payments to Acquire Businesses, Gross | 160 | |
| Business Acquisition, Equity Interest Issued or Issuable, Value Assigned | $ 18 |