Impairments and Other Charges (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Restructuring Cost and Reserve [Line Items]
Operating lease right-of-use assets		$ 972		$ 972		$ 1,022
Current portion of operating lease liabilities		294		294		$ 263
Gain (Loss) on Investments		(6)	$ (43)	(6)	$ (43)
Other		28	12	120	12
Impairments and other charges	[1]	392	116	748	116
Severance costs		169	63	276	63
Impairment Charge on Reclassified Assets		96	49	200	49
Impairment of Real Estate		0	0	53	0
Self Insurance Reserve, Current		(10)	35	(10)	35
Gain (Loss) on Sale of Assets and Asset Impairment Charges		115	0	115	0
Completion And Production [Member]
Restructuring Cost and Reserve [Line Items]
Impairments and other charges		252	45	453	45
Drilling And Evaluation [Member]
Restructuring Cost and Reserve [Line Items]
Impairments and other charges		140	34	225	34
Corporate Segment and Other Operating Segment [Member]
Restructuring Cost and Reserve [Line Items]
Impairments and other charges		$ 0	$ 37	$ 70	$ 37

[1] For the three months ended September 30, 2025, the amount includes a $252 million charge attributable to Completion and Production, a $140 million charge attributable to Drilling and Evaluation segment. For the nine months ended September 30, 2025, the amount included a $453 million charge attributable to Completion and Production, a $225 million charge attributable to Drilling and Evaluation, and a $70 million charge attributable to Corporate and other. For the three and nine months ended September 30, 2024, the amount included a $45 million charge attributable to Completion and Production, a $34 million charge attributable to Drilling and Evaluation, and a $37 million charge attributable to Corporate and other. See Note 2 for further discussion on impairments and other charges.