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Segment Information
 3 Months Ended
Mar. 31, 2015
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Segment Information
Segment Information
 
Our business consists of three operating segments: (1) Floaters, which includes our drillships and semisubmersible rigs, (2) Jackups and (3) Other, which consists of management services on rigs owned by third-parties. Our two reportable segments, Floaters and Jackups, provide one service, contract drilling.
    
Segment information for the quarters ended March 31, 2015 and 2014 is presented below (in millions). General and administrative expense and depreciation expense incurred by our corporate office are not allocated to our operating segments for purposes of measuring segment operating income and were included in "Reconciling Items." We measure segment assets as property and equipment. Prior year information has been reclassified to conform to the current year presentation.

Three Months Ended March 31, 2015
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
695.0

 
$
428.3

 
$
40.6

 
$
1,163.9

 
$
—

 
$
1,163.9

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
293.5

 
191.5

 
33.3

 
518.3

 
—

 
518.3

Depreciation
93.0

 
41.5

 
—

 
134.5

 
2.6

 
137.1

General and administrative
—

 
—

 
—

 
—

 
30.1

 
30.1

Operating income (loss)
$
308.5

 
$
195.3

 
$
7.3

 
$
511.1

 
$
(32.7
)
 
$
478.4

Property and equipment, net
$
9,453.5

 
$
3,195.2

 
$
—

 
$
12,648.7

 
$
76.6

 
$
12,725.3


Three Months Ended March 31, 2014
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
651.6

 
$
398.5

 
$
16.6

 
$
1,066.7

 
$
—

 
$
1,066.7

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
306.6

 
202.3

 
11.3

 
520.2

 
—

 
520.2

Depreciation
90.7

 
38.5

 
—

 
129.2

 
1.9

 
131.1

General and administrative
—

 
—

 
—

 
—

 
38.1

 
38.1

Operating income (loss)
$
254.3

 
$
157.7

 
$
5.3

 
$
417.3

 
$
(40.0
)
 
$
377.3

Property and equipment, net
$
11,376.2

 
$
2,986.1

 
$
—

 
$
14,362.3

 
$
56.0

 
$
14,418.3


Information about Geographic Areas    

As of March 31, 2015, the geographic distribution of our drilling rigs by reportable segment was as follows:
 
Floaters

 
Jackups

 
Total(1)

North & South America (excluding Brazil)
9
 
7
 
16
Middle East & Africa
3
 
10
 
13
Europe & Mediterranean
1
 
11
 
12
Asia & Pacific Rim
3
 
8
 
11
Asia & Pacific Rim (under construction)
3
 
2
 
5
Brazil
4
 
—
 
4
Middle East & Africa (under construction)
—
 
2
 
2
Held for sale
5
 
2
 
7
Total
28
 
42
 
70


(1) 
We provide management services on six rigs owned by third-parties not included in the table above.