Restructuring Charges (Restructuring Charges by Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 22	$ 0	$ 206
Drilling and Evaluation
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	5	0	35
Well Construction and Completions
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	7	0	60
Production and Intervention
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	5	0	52
Corporate and Other
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 5	$ 0	$ 59