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Discontinued Operations (Notes)
 9 Months Ended
Sep. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]  
Discontinued Operations
Discontinued Operations
    
The following table summarizes loss from discontinued operations, net, for the three-month and nine-month periods ended September 30, 2016 and 2015 (in millions):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2016
 
2015
 
2016
 
2015
Revenues
$
—

 
$
1.7

 
$
—

 
$
19.4

Operating expenses
.3

 
5.6

 
2.7

 
38.8

Operating loss
(.3
)

(3.9
)
 
(2.7
)
 
(19.4
)
Income tax (expense) benefit
(.5
)
 
(2.1
)
 
(.2
)
 
7.1

Loss on impairment, net
—

 
(17.3
)
 
—

 
(24.5
)
Gain on disposal of discontinued operations, net
.1

 
—

 
1.1

 
3.2

Loss from discontinued operations, net
$
(.7
)
 
$
(23.3
)
 
$
(1.8
)
 
$
(33.6
)


During the nine-month period ended September 30, 2016, we sold ENSCO DS-2, ENSCO 6000 and ENSCO 58 for scrap value resulting in a net pre-tax gain on sale of $1.2 million included in loss from discontinued operations, net, in our condensed consolidated statements of operations.

ENSCO 7500 and ENSCO 90 remain classified as held-for-sale in our September 30, 2016 condensed consolidated balance sheet and are included in discontinued operations.

For the three-month and nine-month period ended September 30, 2015, loss from discontinued operations, net, included pre-tax impairment losses of $25.6 million and $32.8 million, respectively, as a result of declines in the estimated fair values of several held-for-sale rigs, the operating results of ENSCO 93 and ENSCO 58, and stacking costs for uncontracted rigs included in discontinued operations. A discrete tax benefit of $11.9 million was included in loss from discontinued operations, net, in the nine-month period ended September 30, 2015.

Debt and interest expense are not allocated to our discontinued operations.