Description of Company and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

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, 2018:	$	2,055	$	770	$	2,825
Current year acquisitions	6		5		11
Purchase price adjustments for previous acquisitions	(1)		(1)		(2)
Other	(21)		(1)		(22)
Balance at December 31, 2019:	$	2,039	$	773	$	2,812
Other	(66)		58		(8)
Balance at December 31, 2020:	$	1,973	$	831	$	2,804