Description of Company and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2013

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, 2011:	$	1,215		$	561	$	1,776
Current year acquisitions	100			62		162
Purchase price adjustments for previous acquisitions	196			1		197
Balance at December 31, 2012:	$	1,511		$	624	$	2,135
Current year acquisitions	43			10		53
Purchase price adjustments for previous acquisitions	(21		)	1		(20		)
Balance at December 31, 2013:	$	1,533		$	635	$	2,168