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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2018
Segment Reporting Information, Revenue for Reportable Segment [Abstract]  
Schedule Of Segment Reporting Information
Three Months Ended June 30, 2018
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
284.9

 
$
158.7

 
$
14.9

 
$
458.5

 
$
—

 
$
458.5

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
203.7

 
126.8

 
13.8

 
344.3

 
—

 
344.3

Depreciation
80.8

 
36.5

 
—

 
117.3

 
3.4

 
120.7

General and administrative
—

 
—

 
—

 
—

 
26.1

 
26.1

Operating income (loss)
$
0.4

 
$
(4.6
)
 
$
1.1

 
$
(3.1
)
 
$
(29.5
)
 
$
(32.6
)
Property and equipment, net
$
9,574.9

 
$
3,167.0

 
$
—

 
$
12,741.9

 
$
42.0

 
$
12,783.9


Three Months Ended June 30, 2017
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
264.0

 
$
178.9

 
$
14.6

 
$
457.5

 
$
—

 
$
457.5

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
145.6

 
132.3

 
13.4

 
291.3

 
—

 
291.3

Depreciation
72.0

 
31.6

 
—

 
103.6

 
4.3

 
107.9

General and administrative
—

 
—

 
—

 
—

 
30.5

 
30.5

Operating income
$
46.4

 
$
15.0

 
$
1.2

 
$
62.6

 
$
(34.8
)
 
$
27.8

Property and equipment, net
$
8,493.2

 
$
2,515.3

 
$
—

 
$
11,008.5

 
$
50.5

 
$
11,059.0


Six Months Ended June 30, 2018
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
543.9

 
$
302.1

 
$
29.5

 
$
875.5

 
$
—

 
$
875.5

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
388.8

 
253.7

 
27.0

 
669.5

 
—

 
669.5

Depreciation
156.1

 
73.0

 
—

 
229.1

 
6.8

 
235.9

General and administrative
—

 
—

 
—

 
—

 
54.0

 
54.0

Operating income (loss)
$
(1.0
)
 
$
(24.6
)
 
$
2.5

 
$
(23.1
)
 
$
(60.8
)
 
$
(83.9
)
Property and equipment, net
$
9,574.9

 
$
3,167.0

 
$
—

 
$
12,741.9

 
$
42.0

 
$
12,783.9


Six Months Ended June 30, 2017
 
Floaters
 
Jackups
 
Other
 
Operating Segments Total
 
Reconciling Items
 
Consolidated Total
Revenues
$
548.8

 
$
350.7

 
$
29.1

 
$
928.6

 
$
—

 
$
928.6

Operating expenses
 
 
 
 
 
 
 
 
 
 
 
Contract drilling (exclusive of depreciation)
292.0

 
250.9

 
26.5

 
569.4

 
—

 
569.4

Depreciation
144.8

 
63.7

 
—

 
208.5

 
8.6

 
217.1

General and administrative
—

 
—

 
—

 
—

 
56.5

 
56.5

Operating income
$
112.0

 
$
36.1

 
$
2.6

 
$
150.7

 
$
(65.1
)
 
$
85.6

Property and equipment, net
$
8,493.2

 
$
2,515.3

 
$
—

 
$
11,008.5

 
$
50.5

 
$
11,059.0
Schedule Of Geographic Distribution Of Rigs By Segment
As of June 30, 2018, the geographic distribution of our drilling rigs by reportable segment was as follows:
 
Floaters
 
Jackups
 
Total(1)
North & South America
8
 
4
 
12
Europe & Mediterranean
6
 
11
 
17
Middle East & Africa
3
 
12
 
15
Asia & Pacific Rim
5
 
7
 
12
Asia & Pacific Rim (under construction)
2
 
1
 
3
Held-for-sale(2)
2
 
1
 
3
Total
26
 
36
 
62

(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) 
One floater classified as held-for-sale as of June 30, 2018 was sold in July 2018.