Acquisitions (Details) - USD ($) $ in Millions				2 Months Ended	3 Months Ended			6 Months Ended
		Apr. 29, 2022	Jul. 01, 2021	Jun. 30, 2022	Jun. 30, 2022		Jun. 30, 2021	Jun. 30, 2022		Dec. 31, 2021	Jun. 30, 2021
Business Acquisition [Line Items]
Modified EBITDA Earnings Loss					$ 1,247		$ 1,306	$ 2,640			$ 2,716
Revenues					2,490		2,283	5,014			4,895
Net Income (Loss) Attributable to Parent					400		304	780			730
Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue					2,500		2,199	5,059			5,138
Business Acquisition, Pro Forma Net Income (Loss)					404		196	798			754
Product [Member]
Business Acquisition [Line Items]
Revenues					1,111		786	2,215			1,933
Energy Commodities and Service
Business Acquisition [Line Items]
Revenues					(313)		(14)	(507)	[1]		(50)	[1]
Gain (Loss) on Derivative Instruments | Energy Related Derivative | Not Designated as Hedging Instrument [Member]
Business Acquisition [Line Items]
Unrealized Gain (Loss) on Derivatives	[2]				(250)		(8)	(375)			(8)
West [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					39		15	50			30
West [Member] | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues					(9)		(5)	(14)	[1]		(7)	[1]
West [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Modified EBITDA Earnings Loss					288		223	548			445
Revenues					687		443	1,249			919
West [Member] | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					252		112	439			264
Gas & NGL Marketing Services | Product [Member]
Business Acquisition [Line Items]
Revenues					979		690	1,994	[3]		1,729	[3]
Gas & NGL Marketing Services | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues					(313)		(4)	(428)	[1],[3]		(38)	[1],[3]
Gas & NGL Marketing Services | Gain (Loss) on Derivative Instruments | Energy Related Derivative | Not Designated as Hedging Instrument [Member]
Business Acquisition [Line Items]
Unrealized Gain (Loss) on Derivatives					(297)		(3)	(356)			(3)
Gas & NGL Marketing Services | Operating Segments [Member]
Business Acquisition [Line Items]
Modified EBITDA Earnings Loss					(282)		8	(269)			101
Revenues					559		724	1,413	[3]		1,779	[3]
Gas & NGL Marketing Services | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					872		727	1,840	[3]		1,815	[3]
Trace Midstream Acquisition
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Business Combination, Consideration Transferred		$ 972
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		39
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		18
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		437
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		483
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		20
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		997
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable		12
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		25
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		$ 972
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		20 years
Percentage Of Finite Lived Intangible Assets Impacted By Our Intent Or Ability To Renew Or Extend Arrangement		2.00%
Acquired Finite-lived Intangible Asset, Weighted-Average Period before Renewal or Extension		19 years
Trace Midstream Acquisition | Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue					10	[4]	26	45	[4]		55
Business Acquisition, Pro Forma Net Income (Loss)					$ 4	[4]	9	18	[4]		20
Trace Midstream Acquisition | West [Member] | Selling, general, and administrative expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs								$ 8
Trace Midstream Acquisition | West [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Modified EBITDA Earnings Loss				$ 20
Revenues				$ 37
Sequent Acquisition
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired			100.00%
Business Combination, Consideration Transferred			$ 159
Business Combination, Working Capital Acquired			109
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents			8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables			498
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory			121
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment			5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			306
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			3
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets			1,051
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable			514
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			46
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			1
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			892
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 159
Sequent Acquisition | Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue							(110)				188
Business Acquisition, Pro Forma Net Income (Loss)							$ (117)				$ 4
Sequent Acquisition | Minimum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			1 year
Sequent Acquisition | Maximum [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years
Sequent Acquisition | Derivative
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other			$ 57
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets			49
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other			116
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			$ 215
Sequent Acquisition | Gas & NGL Marketing Services | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues										$ (43)
Sequent Acquisition | Gas & NGL Marketing Services | Gain (Loss) on Derivative Instruments | Energy Related Derivative | Not Designated as Hedging Instrument [Member]
Business Acquisition [Line Items]
Unrealized Gain (Loss) on Derivatives										(109)
Sequent Acquisition | Gas & NGL Marketing Services | Selling, general, and administrative expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs										5
Sequent Acquisition | Gas & NGL Marketing Services | Operating Segments [Member]
Business Acquisition [Line Items]
Modified EBITDA Earnings Loss										(112)
Sequent Acquisition | Gas & NGL Marketing Services | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Affiliate Costs										80
Revenues										$ (43)

[1] We record transactions that qualify as derivatives at fair value with changes in fair value recognized in earnings in the period of change and characterized as unrealized gains or losses. Gains and losses on derivatives held for energy trading purposes are presented on a net basis in revenue.

[2] Amounts for the three months ended June 30, 2022, include $(297) million related to our Gas & NGL Marketing Services segment and $47 million related to our Other segment. Amounts for the six months ended June 30, 2022, include $(356) million related to our Gas & NGL Marketing Services segment and $(19) million related to our Other segment. Amounts for the three and six months ended June 30, 2021, included $(3) million related to our Gas & NGL Marketing services segment and $(5) million related to our Other segment.

[3] See Note 1 – General, Description of Business, and Basis of Presentation.

[4] Excludes results from operations acquired in the Trace Acquisition for the period beginning on the acquisition date of April 29, 2022, as these results are included in the amounts as reported.