Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

Changes in the carrying amount of goodwill, included in Intangible assets – net of accumulated amortization in our Consolidated Balance Sheet, by reportable segment for the periods indicated are as follows:

	Transmission & Gulf of Mexico		West		Total
	(Millions)
December 31, 2021	$	—	$	—	$	—
December 31, 2022	—		—		—
MountainWest Acquisition (Note 3)	400				400
Cureton Acquisition (Note 3)			6		6
RMM Acquisition (Note 3)			57		57
December 31, 2023	$	400	$	63	$	463

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The gross carrying amount and accumulated amortization of other intangible assets, included in Intangible assets – net of accumulated amortization in our Consolidated Balance Sheet, at December 31 are as follows:

	2023				2022
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
	(Millions)
Customer relationships	$	10,237	$	(3,155)	$	10,065	$	(2,801)
Transportation and storage capacity contracts	267		(223)		267		(172)
Other	6		(2)		6		(2)
Other intangible assets	$	10,510	$	(3,380)	$	10,338	$	(2,975)