v3.5.0.2
Related-Party Transactions Related-Party Transactions, Summary of Affiliate Transactions (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Nov. 14, 2016
Oct. 18, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Concentration Risk, Percentage     60.00%       54.00% 58.00% 55.00%
Revenue from Related Parties [1],[2]     $ 184       $ 152 $ 521 $ 454
Related Party Transaction, Expenses from Transactions with Related Party     40       33 113 93
Related Party Gain (Loss) On Settlement And Reimbursements [3]     5       12 17 31
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party     18       16 51 51
Volume Gains (Losses) Value     2       2 5 6
Cost of Reimbursable Expense     $ 3       $ 10 12 $ 25
Distribution Made to Limited Partner, Cash Distributions Declared               $ 175  
Distribution Made to Limited Partner, Distributions Declared, Per Unit       $ 0.842 $ 0.810 $ 0.780      
Distribution Made to Limited Partner, Distribution Date       Aug. 12, 2016 May 13, 2016 Feb. 12, 2016      
Subsequent Event                  
Distribution Made to Limited Partner, Cash Distributions Declared   $ 71              
Distribution Made to Limited Partner, Declaration Date   Oct. 18, 2016              
Distribution Made to Limited Partner, Distributions Declared, Per Unit [4]   $ 0.875              
Distribution Made to Limited Partner, Distribution Date [4] Nov. 14, 2016                
[1] (a)Adjusted to include the historical results of the Predecessors. See Notes 1 and 2 for further discussion.
[2] Tesoro accounted for 60% and 54% of our total revenues for the three months ended September 30, 2016 and 2015, respectively, and 58% and 55% of our total revenues for the nine months ended September 30, 2016 and 2015, respectively.
[3] Includes imbalance settlement gains of $2 million and for both the three months ended September 30, 2016 and 2015, and $5 million and $6 million for the nine months ended September 30, 2016 and 2015, respectively. Also includes reimbursements from Tesoro pursuant predominantly to the Amended Omnibus Agreement and the Carson Assets Indemnity Agreement of $3 million and $10 million for the three months ended September 30, 2016 and 2015, respectively, and $12 million and $25 million for the nine months ended September 30, 2016 and 2015, respectively.
[4] This distribution was declared on October 18, 2016 and will be paid on the date of distribution.