v3.7.0.1

Related-Party Transactions Related-Party Transactions, Summary of Transactions Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Revenue from Related Parties | [1] | $ 203 | $ 169
Related Party Transaction, Expenses from Transactions with Related Party | [2] | 39 | 35
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party |  | $ 20 | $ 17
Concentration Risk, Percentage |  | 48.00% | 56.00%
Volume Gains (Losses) Value |  | $ 3 | $ 1
Cost of Reimbursable Expense |  | 2 | 6
Partner to Tesoro [Member] | Omnibus Agreement |  |  |
Payment for Administrative Fees |  | 11 |
Tesoro to Partner [Member] | Secondment and Logistics Services Agreement |  |  |
Long-term Purchase Commitment, Amount |  | $ 5 | $ 5
[1] | Tesoro accounted for 48% and 56% of our total revenues for the three months ended March 31, 2017 and 2016, respectively.
[2] | Includes imbalance settlement gains of $3 million and $1 million for the three months ended March 31, 2017 and 2016, respectively. Also includes reimbursements from Tesoro pursuant predominantly to the Amended Omnibus Agreement and the Carson Assets Indemnity Agreement of $2 million and $6 million for the three months ended March 31, 2017 and 2016, respectively.

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