Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2020

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 the Consolidated Balance Sheet, by reportable segment for the periods indicated are as follows:

	Northeast G&P
	(Millions)
December 31, 2018	$	—
UEOM Acquisition (Note 3)	188
December 31, 2019	188
Impairment of goodwill (Note 18)	(187)
Other (Note 3)	(1)
December 31, 2020	$	—

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 the Consolidated Balance Sheet, at December 31 are as follows:

	2020				2019
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
	(Millions)
Other intangible assets	$	9,561	$	(2,117)	$	9,560	$	(1,789)