Consolidated Statements of Cash Flows - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020		Mar. 31, 2019	[1]
Equity Method Investment, Other than Temporary Impairment		$ 1,264
Proceeds from Contributions from Parent		14		$ 12
Operating activities:
Net income/(loss)		(2,716)		689	[2],[3],[4]
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Amortization of deferred financing costs		14		7
Depreciation and amortization	[5]	325		301	[3],[4]
Goodwill and Intangible Asset Impairment		2,165		0	[3],[4]
Deferred income taxes		0		(2)
(Gain)/loss on disposal of assets		0		1
Loss/(income) from equity method investments(2)		1,184	[6],[7],[8]	(77)	[3],[4],[9]
Distributions from unconsolidated affiliates		119		115
Changes in:
Current receivables		71		6
Inventories		3		4
Fair value of derivatives		(15)		7
Current accounts payable and accrued liabilities		(142)		(69)
Current assets/current liabilities - related parties		(52)		(157)
Increase (Decrease) in Other Operating Assets and Liabilities, Net		(4)		0
Deferred revenue		27		13
All other, net		30		15
Net cash provided by operating activities		1,009		853
Investing activities:
Additions to property, plant and equipment		(379)		(575)
Proceeds from Contributions from Affiliates		0		1
Disposal of assets		39		7
Investments in unconsolidated affiliates		(91)		(135)
Distributions from unconsolidated affiliates - return of capital		69		2
Net cash used in investing activities		(362)		(700)
Financing activities:
Long-term debt - borrowings		1,325		1,404
Long-term debt - repayments		(581)		(821)
Related party debt - borrowings		1,667		1,405
Related party debt - repayments		(2,261)		(1,405)
Distributions to noncontrolling interests		(9)		(6)
Distributions to unitholders and general partner		(717)		(515)
Contributions from noncontrolling interests		0		94	[10]
All other, net		(2)		(5)
Net cash used in financing activities		(605)		(116)
Net (decrease)/increase in cash, cash equivalents and restricted cash		42		37
Cash, cash equivalents and restricted cash at beginning of period		15		85
Cash, cash equivalents and restricted cash at end of period		57		122
Series A Preferred Stock [Member] | Preferred Partner [Member]
Financing activities:
Distributions to preferred unitholders		(20)		(20)
Series B Preferred Stock [Member] | Preferred Partner [Member]
Payments of Distributions on Preferred Units from Predecessor		0		259
Financing activities:
Distributions to preferred unitholders		$ (21)		$ 0

[1] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[2] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[3] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[4] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[5] Within the total segment revenues and other income amounts presented above, third party revenues for the L&S segment were $158 million and $153 million for the three months ended March 31, 2020 and 2019, respectively. Third party losses for the G&P segment were $425 million for the three months ended March 31, 2020 and third party revenues were $887 million for the three months ended March 31, 2019.

[6] The 2020 period includes $1,264 million of impairment expense. See Note 4.

[7] The 2020 period includes $1,264 million of impairment expense. See Note 4.

[8] Includes the impact of any basis differential amortization or accretion in addition to the impairment of $1,264 million.

[9] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.

[10] Financial information for the first quarter of 2019 has been retrospectively adjusted for the acquisition of ANDX. See Notes 1 and 3.