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Business Segment and Geographic Information
 3 Months Ended
Mar. 31, 2013
Segment Reporting [Abstract]  
Business Segment and Geographic Information
Business Segment and Geographic Information
We operate under two divisions, which form the basis for the two operating segments we report: the Completion and Production segment and the Drilling and Evaluation segment.
The following table presents information on our business segments. “Corporate and other” includes expenses related to support functions and corporate executives. Also included are certain gains and losses not attributable to a particular business segment (such as the loss contingencies related to the Macondo well incident recorded in “Corporate and other” during the first quarters of 2013 and 2012).
Intersegment revenue was immaterial. Our equity in earnings and losses of unconsolidated affiliates that are accounted for by the equity method of accounting are included in revenue and operating income of the applicable segment.
 
Three Months Ended
March 31
Millions of dollars
2013
2012
Revenue:
 
 
Completion and Production
$
4,100

$
4,290

Drilling and Evaluation
2,874

2,578

Total revenue
$
6,974

$
6,868

Operating income (loss):
 
 
Completion and Production
$
615

$
1,036

Drilling and Evaluation
407

368

Total operations
1,022

1,404

Corporate and other
(1,120
)
(381
)
Total operating income (loss)
$
(98
)
$
1,023

Interest expense, net of interest income
(71
)
(74
)
Other, net
(14
)
(7
)
Income (loss) from continuing operations before income taxes
$
(183
)
$
942



Receivables
As of March 31, 2013, 35% of our gross trade receivables were from customers in the United States. As of December 31, 2012, 36% of our gross trade receivables were from customers in the United States. No other country or single customer accounted for more than 10% of our gross trade receivables at these dates.