Acquisitions (Details) - USD ($) $ in Millions					3 Months Ended			5 Months Ended	6 Months Ended	9 Months Ended
		Aug. 31, 2022	Apr. 29, 2022	Jul. 01, 2021	Sep. 30, 2022		Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2022		Sep. 30, 2021
Business Acquisition [Line Items]
Revenues					$ 3,021		$ 2,475			$ 8,035		$ 7,370
Modified EBITDA Earnings Loss					1,599		1,105			4,239		3,821
Net Income (Loss) Attributable to Parent					600		165			1,380		895
Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue							2,506			8,080		7,644
Business Acquisition, Pro Forma Net Income (Loss)							176			1,398		930
Product [Member]
Business Acquisition [Line Items]
Revenues					1,260		1,296			3,475		3,229
Energy Commodities and Service
Business Acquisition [Line Items]
Revenues	[1]				16		(391)			(491)		(441)
Gain (Loss) on Derivative Instruments | Energy Related Derivative | Not Designated as Hedging Instrument [Member]
Business Acquisition [Line Items]
Unrealized Gain (Loss) on Derivatives					29		(309)			(346)		(317)
West [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					61		13			111		43
West [Member] | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues	[1]				(9)		(18)			(23)		(25)
West [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues					708		531			1,957		1,450
Modified EBITDA Earnings Loss					337		257			885		702
West [Member] | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					245		177			684		441
Gas & NGL Marketing Services | Product [Member]
Business Acquisition [Line Items]
Revenues	[2]				1,079		1,183			3,073		2,912
Gas & NGL Marketing Services | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues	[1],[2]				53		(352)			(375)		(390)
Gas & NGL Marketing Services | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues	[2]				938		882			2,351		2,661
Modified EBITDA Earnings Loss					20	[3]	(262)			(249)	[3]	(161)
Gas & NGL Marketing Services | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues	[2]				884		1,234			2,724		3,049
Transmission And Gulf Of Mexico [Member] | NorTex Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets		$ 424
Transmission And Gulf Of Mexico [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					78		54			187		141
Transmission And Gulf Of Mexico [Member] | Energy Commodities and Service
Business Acquisition [Line Items]
Revenues	[1]				1		0			1		0
Transmission And Gulf Of Mexico [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues					1,043		937			3,040		2,749
Modified EBITDA Earnings Loss					638		630			1,987		1,936
Transmission And Gulf Of Mexico [Member] | Operating Segments [Member] | Product [Member]
Business Acquisition [Line Items]
Revenues					121		88			334		222
Trace Midstream Acquisition
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired			100.00%
Business Combination, Consideration Transferred			$ 972
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment					11
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Intangibles					$ (11)
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			448
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			472
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							31			45	[4]	86
Business Acquisition, Pro Forma Net Income (Loss)							$ 11			18	[4]	31
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]
Revenues								$ 99
Modified EBITDA Earnings Loss								$ 48
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	[5]											188
Business Acquisition, Pro Forma Net Income (Loss)	[5]											$ 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 | Selling, general, and administrative expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs									5
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 | 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]
Revenues									(43)
Affiliate Costs									$ 80

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

[3] Modified EBITDA for the three and nine months ended September 30, 2022, includes charges of $64 million and $76 million associated with lower of cost or net realizable value adjustments to our inventory. These charges are reflected in Product Sales and Product costs in our Consolidated Statement of Income.

[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.

[5] Excludes results from operations acquired in the Sequent Acquisition for the period beginning on the acquisition date of July 1, 2021, as these results are included in the amounts as reported.