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Business Segment and Geographic Information (Tables)
3 Months Ended
Mar. 31, 2014
Segment Reporting [Abstract]  
Information on business segments
 
Three Months Ended
March 31
Millions of dollars
2014
2013
Revenue:
 
 
Completion and Production
$
4,420

$
4,100

Drilling and Evaluation
2,928

2,874

Total revenue
$
7,348

$
6,974

Operating income (loss):
 
 
Completion and Production
$
661

$
615

Drilling and Evaluation
398

407

Total operations
1,059

1,022

Corporate and other
(89
)
(1,120
)
Total operating income (loss)
$
970

$
(98
)
Interest expense, net of interest income
(93
)
(71
)
Other, net
(31
)
(14
)
Income (loss) from continuing operations before income taxes
$
846

$
(183
)