v3.5.0.2
Related-Party Transactions (Tables)
6 Months Ended
Jun. 30, 2016
Related Party Transactions [Abstract]  
Schedule of related party transactions
SUMMARY OF REVENUE AND EXPENSE TRANSACTIONS WITH TESORO (in millions)

 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
2016
 
2015
 
2016
 
2015
Revenues (a)
$
168

 
$
154

 
$
337

 
$
302

Operating and maintenance expenses
35

 
30

 
73

 
60

Imbalance settlement gains and reimbursements
from Tesoro (b)
5

 
11

 
12

 
19

General and administrative expenses
16

 
18

 
33

 
35


(a)
Tesoro accounted for 57% of our total revenues for both the three and six months ended June 30, 2016 and 56% of our total revenues for both the three and six months ended June 30, 2015.
(b)
Includes imbalance settlement gains of $2 million for both the three months ended June 30, 2016 and 2015, and $3 million and $4 million for the six months ended June 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 $9 million for the three months ended June 30, 2016 and 2015, respectively, and $9 million and $15 million for the six months ended June 30, 2016 and 2015, respectively.