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Revenue (Tables)
 12 Months Ended
Dec. 31, 2018
Revenue [Abstract]  
Disaggregation of Revenue The following table presents information on our disaggregated revenue.

 
Year Ended December 31
Millions of dollars
2018
2017
2016
Revenue by division:
 
 
 
Completion and Production
$
15,973

$
13,077

$
8,882

Drilling and Evaluation
8,022

7,543

7,005

Total revenue
$
23,995

$
20,620

$
15,887

Revenue by geographic region:
 
 
 
North America
$
14,431

$
11,564

$
6,770

Latin America
2,065

2,116

1,860

Europe/Africa/CIS
2,945

2,781

2,993

Middle East/Asia
4,554

4,159

4,264

Total revenue
$
23,995

$
20,620

$
15,887