Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

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		West			Total
	(Millions)
December 31, 2017	$	—	$	47		$	47
Jackalope Deconsolidation (see Note 6)			(47		)	(47		)
December 31, 2018	—		—			—
UEOM Acquisition (see Note 3)	188					188
December 31, 2019	$	188	$	—		$	188

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:

	2019					2018
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(Millions)
Contractual customer relationships	$	9,560	$	(1,789	)	$	9,232	$	(1,465	)