Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2017		Jun. 30, 2016		Jun. 30, 2017		Jun. 30, 2016
Segment Reporting Information [Line Items]
Revenue		$ 7,462		$ 7,164		$ 14,356		$ 13,684
Income Before Taxes		17		(2,514)		351		(1,893)
Pretax operating income		950		747		1,707		1,648
Interest expense		142		149		281		282
Operating Segments
Segment Reporting Information [Line Items]
Interest income		6		6		11		12
Interest expense		14		13		27		26
Operating Segments | Reservoir Characterization
Segment Reporting Information [Line Items]
Revenue		1,759		1,586		3,377		3,305
Income Before Taxes		299		268		580		601
Operating Segments | Drilling
Segment Reporting Information [Line Items]
Revenue		2,107		2,034		4,092		4,527
Income Before Taxes		302		171		531		542
Operating Segments | Production
Segment Reporting Information [Line Items]
Revenue		2,496		2,121		4,683		4,497
Income Before Taxes		221		82		331		288
Operating Segments | Cameron
Segment Reporting Information [Line Items]
Revenue		1,265		1,525		2,494		1,525
Income Before Taxes		174		250		336		250
Eliminations & other
Segment Reporting Information [Line Items]
Revenue		(165)		(102)		(290)		(170)
Income Before Taxes		(46)		(24)		(71)		(33)
Material Reconciling Items
Segment Reporting Information [Line Items]
Corporate & other	[1]	(242)		(241)		(480)		(414)
Interest income		28	[2]	24	[2]	52	[3]	37	[3]
Interest expense		(128)	[4]	(136)	[4]	(254)	[5]	(256)	[5]
Charges and credits	[6]	$ (591)		$ (2,908)		$ (674)		$ (2,908)

[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 ($6 million in 2017; $6 million in 2016).

[3] Interest income excludes amounts which are included in the segments’ income ($11 million in 2017; $12 million in 2016).

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

[5] Interest expense excludes amounts which are included in the segments’ income ($27 million in 2017; $26 million in 2016).

[6] See Note 2 – Charges and Credits.