v3.5.0.2

Related-Party Transactions Related-Party Transactions, Summary of Transactions Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	May 13, 2016	Apr. 20, 2016	Sep. 30, 2016	[1]	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015	Mar. 31, 2015
Related Party Transactions
Concentration risk, percentage					56.00%			56.00%
Imbalance settlement gains					$ 1			$ 2
Reimbursements from Tesoro					$ 6			$ 6
Declaration date					Oct. 18, 2016
Cash distributions per unit (dollars per unit)						$ 0.78	$ 0.8420
Distribution declared (including IDRs)					$ 50
Omnibus Agreement
Related Party Transactions
Payment for Administrative Fees					9
Secondment and Logistics Services Agreement
Related Party Transactions
Long-term Purchase Commitment, Amount					$ 2
Subsequent Event
Related Party Transactions
Declaration date		Apr. 20, 2016
Cash distributions per unit (dollars per unit)		$ 0.81	$ 0.8750
Distribution declared (including IDRs)	$ 59
[1] This distribution was declared on October 18, 2016 and will be paid on the date of distribution.

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The value of gains (losses) arising from changes in volumes of crude oil or refined products due to pressure and temperature changes, evaporation and variances in other measurement methods.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client.

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Amount of equity impact of cash distribution declared to unit-holder of limited partnership (LP).

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Per unit of ownership amount of cash distributions declared to unit-holder of a limited partnership (LP).

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Amount paid to managing member or general partner, affiliate of managing member or general partner, or affiliate of limited liability company (LLC) or limited partnership (LP) for administrative services provided to the LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

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