Impairments

3 Months Ended

Mar. 31, 2022

Impairment Expense [Abstract]

Impairments

Impairments

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

	Three Months Ended March 31,
	2022				2021
(In millions)	Fair Value		Impairment		Fair Value		Impairment
Long-lived assets held for use	$	—	$	—	$	—	$	1
Asset retirement costs of long-lived assets	$	—	$	—	$	—	$	—