Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2017		Sep. 30, 2016		Sep. 30, 2017		Sep. 30, 2016
Segment Reporting Information [Line Items]
Revenue		$ 7,905		$ 7,019		$ 22,261		$ 20,703
Income Before Taxes		677		200		1,027		(1,691)
Pretax operating income		1,059		815		2,766		2,462
Interest expense		142		149		422		431
Operating Segments
Segment Reporting Information [Line Items]
Interest income		4		7		15		20
Interest expense		13		14		39		40
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		1,771		1,667		5,148		4,972
Income Before Taxes		311		329		891		930
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue		2,120		2,021		6,212		6,548
Income Before Taxes		301		218		832		760
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue		2,876		2,104		7,559		6,601
Income Before Taxes		283		91		614		379
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue		1,297		1,341		3,791		2,865
Income Before Taxes		194		215		530		465
Eliminations & other
Segment Reporting Information [Line Items]
Revenue		(159)		(114)		(449)		(283)
Income Before Taxes		(30)		(38)		(101)		(72)
Material Reconciling Items
Segment Reporting Information [Line Items]
Corporate & other	[1]	(234)		(267)		(715)		(679)
Interest income		30	[2]	24	[2]	82	[3]	61	[3]
Interest expense		(129)	[4]	(135)	[4]	(383)	[5]	(391)	[5]
Charges and credits	[6]	$ (49)		$ (237)		$ (723)		$ (3,144)

[1] Comprised principally of certain corporate expenses not allocated to the segments, stock-based compensation costs, amortization expense associated with certain intangible assets, certain centrally managed initiatives and other nonoperating items.

[2] Interest income excludes amounts which are included in the segments’ income ($4 million in 2017; $7 million in 2016).

[3] Interest income excludes amounts which are included in the segments’ income ($15 million in 2017; $20 million in 2016).

[4] Interest expense excludes amounts which are included in the segments’ income ($13 million in 2017; $14 million in 2016).

[5] Interest expense excludes amounts which are included in the segments’ income ($39 million in 2017; $40 million in 2016).

[6] See Note 2 – Charges and Credits.