Impairment of Long-lived Assets and Goodwill (Tables)

9 Months Ended

Sep. 30, 2020

Impairment of Long-lived Assets and Goodwill [Abstract]

Schedule of Goodwill [Table Text Block]

The following table presents the change in carrying amount of goodwill in each of our reportable segments.

	Gathering and Processing		Transportation and Storage		Total
	(In millions)
Balance as of December 31, 2019	$	12	$	—	$	12
Goodwill impairment	(12)		—		(12)
Balance as of September 30, 2020	$	—	$	—	$	—