Impairments (Tables)

3 Months Ended

Mar. 31, 2020

Impairment Expense [Abstract]

Fair Value Measurements, Nonrecurring

The following table summarizes impairment charges of proved properties and goodwill and their corresponding fair values.

	Three Months Ended March 31,
	2020				2019
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	—	$	2	$	37	$	6
Goodwill	$	—	$	95	N/A		$	—