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Financial Instruments and Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2014
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 debt is as follows:
 
December 31, 2014
 
December 31, 2013
Carrying value
$
1,018.4

 
$
1,039.9

Fair value
$
1,109.9

 
$
1,135.2