Consolidated Statement Of Equity - USD ($) $ in Millions		Total		AOCI	Non-controlling Interests	Predecessor Equity [Member]	Preferred Units [Member]	Common unitholders [Member]
Balance, Beginning at Dec. 31, 2018	[1]	$ 36,788		$ (42)	$ 7,903		$ 2,388	$ 26,539
Distributions to partners		(1,514)		0	0		(64)	(1,450)
Distributions to noncontrolling interests		(361)		0	(361)		0	0
Capital contributions from noncontrolling interests		140		0	140		0	0
Sale of noncontrolling interest in subsidiary		93		0	93		0	0
Other comprehensive loss, net of tax		8		8	0		0	0
Other, net		28		0	13		0	15
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest		1,206		0	256		40	910
Balance, Ending at Mar. 31, 2019	[1]	36,388		(34)	8,044		2,364	26,014
Balance, Beginning at Dec. 31, 2018	[1]	36,788		(42)	7,903		2,388	26,539
Distributions to partners		(67)
Equity in earnings of unconsolidated affiliates	[1]	142
Capital contributions from noncontrolling interests	[1]	206
Other comprehensive loss, net of tax	[1]	9
Balance, Ending at Jun. 30, 2019	[1]	36,454		(33)	8,006		3,178	25,303
Balance, Beginning at Mar. 31, 2019	[1]	36,388		(34)	8,044		2,364	26,014
Distributions to partners		(1,643)		0	0		(18)	(1,625)
Equity in earnings of unconsolidated affiliates	[1]	77
Distributions to noncontrolling interests		(370)		0	(370)		0	0
Units issued for cash		780		0	0		780	0
Capital contributions from noncontrolling interests		66		0	66		0	0
Other comprehensive loss, net of tax		1	[1]	1	0		0	0
Other, net		(37)		0	0		(1)	(36)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest		1,269		0	266		53	950
Balance, Ending at Jun. 30, 2019	[1]	36,454		(33)	8,006		3,178	25,303
Balance, Beginning at Dec. 31, 2019	[1]	37,425		(18)	8,018	$ 2,025	3,174	24,226
Distributions to partners		(2,630)		0	0	0	(80)	(2,550)
Distributions to noncontrolling interests		(365)		0	(340)	(25)	0	0
Units issued for cash		1,580		0	0	0	1,580	0
Capital contributions from noncontrolling interests		96		0	66	30	0	0
Proceeds from Contributions from Parent		0		(2)	333	(2,171)	0	1,840
Other comprehensive loss, net of tax		(57)		(19)	0	(38)	0	0
Other, net		(18)		0	3	(10)	(3)	(8)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest		(926)		0	(200)	(6)	77	(797)
Balance, Ending at Mar. 31, 2020	[1]	35,105		(39)	7,880	(195)	4,748	22,711
Balance, Beginning at Dec. 31, 2019	[1]	37,425		(18)	8,018	2,025	3,174	24,226
Distributions to partners						0
Equity in earnings of unconsolidated affiliates		78
Capital contributions from noncontrolling interests		148
Other comprehensive loss, net of tax		28
Balance, Ending at Jun. 30, 2020		35,566		(21)	8,313	0	4,764	22,510
Balance, Beginning at Mar. 31, 2020	[1]	35,105		(39)	7,880	(195)	4,748	22,711
Distributions to partners				0	0		(67)	0
Equity in earnings of unconsolidated affiliates		85
Distributions to noncontrolling interests		(340)		0	(340)	0	0	0
Capital contributions from noncontrolling interests		82		0	82	0	0	0
Other comprehensive loss, net of tax		47		38	9	0	0	0
Other, net		33		0	2	0	(1)	32
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Excluding Portion Attributable to Redeemable Noncontrolling Interest		706		0	225	0	84	397
Balance, Ending at Jun. 30, 2020		35,566		(21)	8,313	0	4,764	22,510
Partners' Capital Account, Contributions		$ 0		$ (20)	$ 455	$ 195	$ 0	$ (630)

[1] *As adjusted. See Note 1.