Equity, Equity Activity (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2017	Jun. 30, 2016	[2]	Jun. 30, 2017	Jun. 30, 2016	[2]
Changes in carrying amount of Equity
Balance at December 31, 2016					$ 1,542
Proceeds from issuance of units, net of issuance costs					287
Distributions to unitholders and general partner (a)	[1]				(280)
Net earnings attributable to partners		$ 110	$ 83		202	$ 175
Contributions (b)	[3]				33
Other					3
Balance at June 30, 2017		1,787			1,787
Common
Changes in carrying amount of Equity
Balance at December 31, 2016					1,608
Proceeds from issuance of units, net of issuance costs					281
Distributions to unitholders and general partner (a)	[1]				(195)
Net earnings attributable to partners					125
Contributions (b)	[3]				31
Other					(2)
Balance at June 30, 2017		1,848			1,848
General Partner
Changes in carrying amount of Equity
Balance at December 31, 2016					(66)
Proceeds from issuance of units, net of issuance costs					6
Distributions to unitholders and general partner (a)	[1]				(85)
Net earnings attributable to partners					77
Contributions (b)	[3]				2
Other					5
Balance at June 30, 2017		$ (61)			$ (61)

[1] Represents cash distributions declared and paid during the six months ended June 30, 2017, relating to the first quarter of 2017 and the fourth quarter of 2016.

[2] Adjusted to include the historical results of the Predecessors. See Note 1 for further discussion.

[3] Includes Andeavor and TLGP contributions to the Partnership primarily related to reimbursements for capital spending pursuant predominantly to the Amended Omnibus Agreement and the Carson Assets Indemnity Agreement.