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Financial Instruments And Fair Value Measurements (Tables)
 6 Months Ended
Jun. 30, 2017
Fair Value Disclosures [Abstract]  
Summary Of Carrying Values And Fair Values Of Fixed Rate Debt
A summary of the aggregate carrying values and fair values of our fixed rate long-term debt is as follows:
 
June 30,
2017
 
December 31,
2016
Carrying value
$
1,778.1

 
$
1,778.6

Fair value
$
1,864.4

 
$
1,862.2
Nonfinancial Assets Measured and Recorded At Fair Value On A Nonrecurring Basis
The following table presents long-lived assets measured and recorded at fair value on a nonrecurring basis during the six months ended June 30, 2017 and 2016:
 
 
2017
 
2016
Description
 
Fair Value
Measurements Using
Significant
Unobservable Inputs
(Level 3)
 
Gain/(Loss)
 
Fair Value
Measurements Using
Significant
Unobservable Inputs
(Level 3)
 
Gain/(Loss)
Long-lived assets held and used
 
$
—

 
$
—

 
$
4.2

 
$
(1.8
)
Long-lived assets held for sale:
 
 
 
 
 
 
 
 
Continuing operations
 
$
2.9

 
$
0.2

 
$
11.4

 
$
(5.8
)
Discontinued operations
 
—

 
—

 
13.2

 
(0.2
)
Total long-lived assets held for sale
 
$
2.9

 
$
0.2

 
$
24.6

 
$
(6.0
)