Description of Company and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill are detailed below by reportable segment.

Millions of dollars	Completion and Production			Drilling and Evaluation			Total
Balance at December 31, 2014:	$	1,606		$	724		$	2,330
Current year acquisitions	27			26			53
Purchase price adjustments for previous acquisitions	1			1			2
Balance at December 31, 2015:	$	1,634		$	751		$	2,385
Current year acquisitions	31			—			31
Purchase price adjustments for previous acquisitions	(2		)	—			(2		)
Other	16			(16		)	—
Balance at December 31, 2016:	$	1,679		$	735		$	2,414