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Acquisitions, Divestitures, Decommissioning and Restructuring Activities - Schedule of Divestiture-related Charges (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Additions (a)	$ 2	$ 79	$ 159
Employee Severance
Restructuring Reserve [Roll Forward]
Beginning employee-related obligations	3	6
Additions (a)	2	79
Noncash stock-based compensation	0	4
Cash payments	4	78
Ending employee-related obligations	1	3	$ 6
Employee Severance \| Delaware Divestiture
Restructuring Reserve [Roll Forward]
Additions (a)	1
Employee Severance \| Well Services Divestiture
Restructuring Reserve [Roll Forward]
Additions (a)	$ 1
Employee Severance \| 2020 Corporate Restructuring
Restructuring Reserve [Roll Forward]
Additions (a)		78
Employee Severance \| 2020 Well Services Restructuring
Restructuring Reserve [Roll Forward]
Additions (a)		$ 1