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Charges and Credits - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended						12 Months Ended
	Apr. 02, 2016	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Charges And Credits [Line Items]
Gain on sale of business								$ 215
Charges and credits									$ 3,590	$ 3,237
Charges and credits, pre tax				$ 1,025	$ 50				3,764	3,820
Charge relating to one-time mandatory tax on previously deferred foreign earnings				410					410
Tax credits resulting from remeasurement of net deferred tax liabilities				334
Promissory note in exchange of accounts receivable					$ 700
Promissory note term					3 years
Promissory note interest rate					6.50%
Debt instrument fair value		$ 14,600		15,200				14,600	15,200
Restructuring and other charges								141	$ 3,764	3,820
US tax reform
Charges And Credits [Line Items]
Charges and credits				76
US tax reform | Tax Year2018
Charges And Credits [Line Items]
Reduced corporate income tax rate									21.00%
Promissory Notes
Charges And Credits [Line Items]
Debt instrument fair value				135					$ 135
Venezuela
Charges And Credits [Line Items]
Charges and credits, pre tax				938
Land seismic business
Charges And Credits [Line Items]
Impairment charge, Pretax				90
Impairments and Other
Charges And Credits [Line Items]
Charges and credits, pre tax									3,211	3,172
Promissory Note Fair Value Adjustment and Other
Charges And Credits [Line Items]
Charges and credits									498
Charges and credits, pre tax					$ 460				510
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, pre tax	$ 349								308	349
Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, pre tax									308
Merger and Integration | Cameron | Inventory fair value adjustments
Charges And Credits [Line Items]
Charges and credits, pre tax	299
Cost of Sales
Charges And Credits [Line Items]
Charges and credits, pre tax									245	299
Lease termination facility
Charges And Credits [Line Items]
Restructuring charges						$ 302
Marine Seismic Acquisition Business
Charges And Credits [Line Items]
Proceeds from divestiture of business		600
Gain on sale of business		$ 215
Charges and credits								(196)
Charges and credits, pre tax								$ (215)
Marine Seismic Acquisition Business | Shearwater GeoServices
Charges And Credits [Line Items]
Percentage of equity ownership interest		15.00%						15.00%
Impairment of Long-Lived Assets | Impairments and Other
Charges And Credits [Line Items]
Charges and credits		$ 172
Workforce Reductions
Charges And Credits [Line Items]
Charges and credits								$ 164
Charges and credits, pre tax				247				$ 184
Restructuring and other charges						234	$ 646
Workforce Reductions | Impairments and Other
Charges And Credits [Line Items]
Charges and credits			$ 184
Vessel write-down
Charges And Credits [Line Items]
Charges and credits, pre tax				786
Impairment of intangible ssets
Charges And Credits [Line Items]
Charges and credits, pre tax				78
Inventory Write Down
Charges And Credits [Line Items]
Charges and credits, pre tax				59
Impairment and other charges							616
Other restructuring costs
Charges And Credits [Line Items]
Charges and credits, pre tax				102
Impairment and other charges							55
Multiclient seismic data impairment
Charges And Credits [Line Items]
Impairment and other charges				246			198
Accounts receivable | Venezuela
Charges And Credits [Line Items]
Charges and credits, pre tax				469
Other-than temporary impairment | Promissory Notes
Charges And Credits [Line Items]
Charges and credits, pre tax					$ 105
Other-than temporary impairment | Venezuela | Promissory Notes
Charges And Credits [Line Items]
Charges and credits, pre tax				105
Fixed assets | Venezuela
Charges And Credits [Line Items]
Charges and credits, pre tax				285
Other assets | Venezuela
Charges And Credits [Line Items]
Charges and credits, pre tax				79
Loss on long-term construction project
Charges And Credits [Line Items]
Charges and credits, pre tax				245
Loss on long-term construction project | Cost of Sales
Charges And Credits [Line Items]
Charges and credits									223
Charges and credits, pre tax									$ 245
Facility and other exit costs
Charges And Credits [Line Items]
Charges and credits, pre tax				$ 156
Facility closure costs | Merger and Integration
Charges And Credits [Line Items]
Charges and credits										48
Charges and credits, pre tax										61
Facility closure costs | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, pre tax	61
Facility closure costs | Lease termination facility
Charges And Credits [Line Items]
Restructuring charges						165
Asset write-offs | Lease termination facility
Charges And Credits [Line Items]
Restructuring charges						98
Contract termination costs | Lease termination facility
Charges And Credits [Line Items]
Restructuring charges						39
Currency Devaluation Loss In Egypt
Charges And Credits [Line Items]
Restructuring and other charges						$ 63				63
North America pressure pumping asset impairments
Charges And Credits [Line Items]
Impairment and other charges							209
Facilities impairments | North America
Charges And Credits [Line Items]
Impairment and other charges							165
Other fixed asset impairments
Charges And Credits [Line Items]
Impairment and other charges							$ 684
Merger-related employee benefits | Merger and Integration
Charges And Credits [Line Items]
Charges and credits										70
Charges and credits, pre tax										83
Merger-related employee benefits | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, pre tax	83
Professional fees | Merger and Integration
Charges And Credits [Line Items]
Charges and credits										35
Charges and credits, pre tax										45
Professional fees | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, pre tax	45
Other merger and integration-related | Merger and Integration
Charges And Credits [Line Items]
Charges and credits										132
Charges and credits, pre tax										$ 160
Other merger and integration-related | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, pre tax	$ 160

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