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Description of Company and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2021
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 dollarsCompletion and ProductionDrilling and EvaluationTotal
Balance at December 31, 2019:$2,039 $773 $2,812 
Other(66)58 (8)
Balance at December 31, 2020:$1,973 $831 $2,804 
Current year acquisitions12 — 12 
Other27 — 27 
Balance at December 31, 2021:$2,012 $831 $2,843