Acquisitions (Details) - USD ($) $ in Millions					3 Months Ended		5 Months Ended	6 Months Ended			8 Months Ended
		Feb. 14, 2023	Aug. 31, 2022	Apr. 29, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2023		Jun. 30, 2022	Dec. 31, 2022
Business Acquisition [Line Items]
Revenues					$ 2,483	$ 2,490		$ 5,564		$ 5,014
Modified EBITDA Earnings Loss					1,667	1,247		3,797		2,640
Net Income (Loss) Attributable to Parent					460	400		1,387		780
Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue						2,562		5,599		5,188
Business Acquisition, Pro Forma Net Income (Loss)						418		1,393		829
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] | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues					1,042	1,002		2,049		1,997
Modified EBITDA Earnings Loss					731	652		1,446		1,349
West [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues					500	687		1,003		1,249
Modified EBITDA Earnings Loss					312	288		616		548
MountainWest Acquisition
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Business Combination, Consideration Transferred		$ 1,080
Business Combination, Consideration Transferred, Liabilities Incurred		430
Business Combination, Assets Arising from Contingencies, Amount Recognized		28
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Receivables					19
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Property, Plant, and Equipment					(75)
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Financial Liabilities					$ (60)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		23
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables		33
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other		26
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Investments		22
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		1,017
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		32
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		1,153
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other		(47)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-Term Debt		(365)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		(95)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		(507)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		646
Goodwill		401
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		1,047
Business Acquisition, Goodwill, Expected Tax Deductible Amount		$ 401
MountainWest Acquisition | Pro Forma
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue						62		35	[1]	129
Business Acquisition, Pro Forma Net Income (Loss)						14		6	[1]	31
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member]
Business Acquisition [Line Items]
Business Combination, Transition Related Costs							$ 18
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member] | Selling, general, and administrative expenses [Member]
Business Acquisition [Line Items]
Business Combination, Acquisition Related Costs								$ 13
MountainWest Acquisition | Transmission And Gulf Of Mexico [Member] | Operating Segments [Member]
Business Acquisition [Line Items]
Revenues							94
Modified EBITDA Earnings Loss							$ 45
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				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	[2]					10				45
Business Acquisition, Pro Forma Net Income (Loss)	[2]					$ 4				$ 18
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											148
Modified EBITDA Earnings Loss											$ 73

[1] Excludes results from operations acquired in the MountainWest Acquisition for the period beginning on the acquisition date of February 14, 2023, as these results are included in the amounts as reported.

[2] 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.