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Business Segments - Other Items by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Total other items	$ 112	$ 1	$ 251	$ 51
Operating Segments [Member] | Rig Systems [Member]
Segment Reporting Information [Line Items]
Total other items	22		65
Operating Segments [Member] | Rig Aftermarket [Member]
Segment Reporting Information [Line Items]
Total other items	1		11
Operating Segments [Member] | Wellbore Technologies [Member]
Segment Reporting Information [Line Items]
Total other items	29		83	9
Operating Segments [Member] | Completion & Production Solutions [Member]
Segment Reporting Information [Line Items]
Total other items	$ 60	(1)	$ 92	6
Unallocated Expenses and Eliminations [Member]
Segment Reporting Information [Line Items]
Total other items		$ 2		$ 36

X

- Definition

The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.3)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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- Definition

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+ References

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