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Segment Information (Tables)
 3 Months Ended
Mar. 31, 2018
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Schedule Of Segment Reporting Information

Three Months Ended March 31, 2018
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
259.0

 
$
143.4

 
$
14.6

 
$
417.0

 
$
—

 
$
417.0

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
185.1

 
126.9

 
13.2

 
325.2

 
—

 
325.2

Depreciation
75.3

 
36.5

 
—

 
111.8

 
3.4

 
115.2

General and administrative
—

 
—

 
—

 
—

 
27.9

 
27.9

Operating income (loss)
$
(1.4
)
 
$
(20.0
)
 
$
1.4

 
$
(20.0
)
 
$
(31.3
)
 
$
(51.3
)
Property and equipment, net
$
9,636.9

 
$
3,154.3

 
$
—

 
$
12,791.2

 
$
43.6

 
$
12,834.8


Three Months Ended March 31, 2017
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
284.8

 
$
171.8

 
$
14.5

 
$
471.1

 
$
—

 
$
471.1

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
146.4

 
118.6

 
13.1

 
278.1

 
—

 
278.1

Depreciation
72.8

 
32.1

 
—

 
104.9

 
4.3

 
109.2

General and administrative
—

 
—

 
—

 
—

 
26.0

 
26.0

Operating income
$
65.6

 
$
21.1

 
$
1.4

 
$
88.1

 
$
(30.3
)
 
$
57.8

Property and equipment, net
$
8,534.3

 
$
2,532.4

 
$
—

 
$
11,066.7

 
$
54.0

 
$
11,120.7
Schedule Of Geographic Distribution Of Rigs By Segment
As of March 31, 2018, the geographic distribution of our drilling rigs by reportable segment was as follows:
 
Floaters
 
Jackups
 
Total(1)
North & South America
9
 
4
 
13
Europe & Mediterranean
6
 
12
 
18
Middle East & Africa
3
 
11
 
14
Asia & Pacific Rim
5
 
8
 
13
Asia & Pacific Rim (under construction)
2
 
1
 
3
Held-for-Sale(2)
2
 
2
 
4
Total
27
 
38
 
65


(1) 
We provide management services on two rigs owned by third-parties in the U.S. Gulf of Mexico which are not included in the table above.
(2) 
Both jackups and one floater classified as held-for-sale as of March 31, 2018 were sold in April 2018.