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Revenue (Tables)
 12 Months Ended
Dec. 31, 2019
Revenue [Abstract]  
Disaggregation of Revenue The following table presents information on our disaggregated revenue.

 
Year Ended December 31
Millions of dollars
2019
2018
2017
Revenue by segment:
 
 
 
Completion and Production
$
14,031

$
15,973

$
13,077

Drilling and Evaluation
8,377

8,022

7,543

Total revenue
$
22,408

$
23,995

$
20,620

Revenue by geographic region:
 
 
 
North America
$
11,884

$
14,431

$
11,564

Latin America
2,364

2,065

2,116

Europe/Africa/CIS
3,285

2,945

2,781

Middle East/Asia
4,875

4,554

4,159

Total revenue
$
22,408

$
23,995

$
20,620