Charges and Credits - Additional Information (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Mar. 31, 2015 USD ($) VEF / $	Jun. 30, 2016 USD ($)
Charges And Credits [Line Items]
Exchange rate | VEF / $		192
Foreign currency transactions, description			This change resulted in a reduction in the US dollar reported amount of local currency denominated revenues, expenses and, consequently, income before taxes and net income in Venezuela.
Merger and Integration
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 335
Merger and Integration | Inventory fair value adjustments | Cameron
Charges And Credits [Line Items]
Charges and credits, Pretax			150
Workforce reduction
Charges And Credits [Line Items]
Impairment and other charges	$ 646
Restructuring and other charges		$ 390
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
Inventory Write Down
Charges And Credits [Line Items]
Impairment and other charges	616
Multiclient seismic data impairment
Charges And Credits [Line Items]
Impairment and other charges	198
Other restructuring costs
Charges And Credits [Line Items]
Impairment and other charges	$ 55
Merger-related employee benefits | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, Pretax			47
Professional fees | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, Pretax			45
Facility closure costs | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, Pretax			40
Other merger and integration-related | Merger and Integration | Cameron
Charges And Credits [Line Items]
Charges and credits, Pretax			$ 53
Currency Devaluation Loss In Venezuela
Charges And Credits [Line Items]
Restructuring and other charges		$ 49