Charges and Credits - Summary of Charges and Credits (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020
Charges And Credits [Line Items]
Charges and credits, Pretax							$ 12,901
Charges and credits, Tax							710
Charges and credits, Net							12,191
Interest and Other
Charges And Credits [Line Items]
Charges and credits, Pretax									$ (65)
Charges and credits, Tax									(15)
Charges and credits, Net									$ (50)
Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax										$ 12,515
Charges and credits, Tax										1,041
Charges and credits, Net										$ 11,474
Gain on Sale of Liberty Shares \| Interest and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	$ (28)
Charges and credits, Tax	(4)
Charges and credits, Net	(24)
Early Repayment of Bonds \| Interest and Other
Charges And Credits [Line Items]
Charges and credits, Pretax	10
Charges and credits, Net	$ 10
Unrealized Gain On Available For Sale Marketable Securities \| Interest and Other
Charges And Credits [Line Items]
Charges and credits, Pretax		$ (47)
Charges and credits, Tax		(11)
Charges and credits, Net		$ (36)
Unrealized Gain On Available For Sale Marketable Securities \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax			$ (39)
Charges and credits, Tax			(9)
Charges and credits, Net			(30)
Goodwill \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						$ 3,070
Charges and credits, Net						3,070
Intangible assets impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						3,321		$ 1,085
Charges and credits, Tax						815		248
Charges and credits, Net						2,506		837
Asset Performance Solutions Investments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					$ 730	1,264
Charges and credits, Tax					15	(4)
Charges and credits, Net					715	1,268
Multiclient Seismic Data Impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					156
Charges and credits, Tax					2
Charges and credits, Net					154
North America pressure pumping asset impairments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax						587		1,575
Charges and credits, Tax						133		344
Charges and credits, Net						454		1,231
Workforce reductions \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax				$ 63	1,021	202	68
Charges and credits, Tax					71	7	8
Charges and credits, Net				63	950	195	60
Other \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax			62	33	60	79		242
Charges and credits, Tax			4	1	4	9		13
Charges and credits, Net			58	32	56	70		229
Valuation allowance \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Tax						(164)
Charges and credits, Net						$ 164
Fixed Asset Impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					666
Charges and credits, Tax					52
Charges and credits, Net					614
Inventory Write Down \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					603
Charges and credits, Tax					49
Charges and credits, Net					554
Right Of Use Asset Impairments \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					311
Charges and credits, Tax					67
Charges and credits, Net					244
Costs Associated With Exiting Certain Activities1 \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					205
Charges and credits, Tax					(25)
Charges and credits, Net					230
Repurchase of bonds \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					40		22
Charges and credits, Tax					2		5
Charges and credits, Net					38		17
Postretirement Benefits Curtailment Gain \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax					(69)
Charges and credits, Tax					(16)
Charges and credits, Net					$ (53)
Facility exit charges \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax				254
Charges and credits, Tax				39
Charges and credits, Net				$ 215
Gain on sale of OneStim \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax			(104)
Charges and credits, Tax			(11)
Charges and credits, Net			$ (93)
North America restructuring \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax							225
Charges and credits, Tax							51
Charges and credits, Net							174
Other restructuring \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax							104
Charges and credits, Tax							(33)
Charges and credits, Net							137
Other North America - Related \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax								310
Charges and credits, Tax								53
Charges and credits, Net								257
Argentina \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax								127
Charges and credits, Net								127
Pension settlement accounting \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax							37
Charges and credits, Tax							8
Charges and credits, Net							29
Equity Method Investment, Other Than Temporary Impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax								231
Charges and credits, Tax								12
Charges and credits, Net								219
Gain on formation of Sensia joint venture \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax							(247)
Charges and credits, Tax							(42)
Charges and credits, Net							$ (205)
Asset Performance Solutions \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax								294
Charges and credits, Net								294
Goodwill impairment \| Impairment and Other
Charges And Credits [Line Items]
Charges and credits, Pretax								8,828
Charges and credits, Tax								43
Charges and credits, Net								$ 8,785