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Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2013
Fair Value Disclosures [Abstract]  
Fair Value of non-current financial liabilities
The fair values of non-current financial liabilities at September 30, 2013 and December 31, 2012, determined based on Level 2 inputs, were as follows:
 
 
September 30, 2013
 
December 31, 2012
 
 
Carrying
Amount
 
Fair Value
 
Carrying
Amount
 
Fair Value
 
 
(In millions)
Long-term debt, less current maturities
 
$
1,205.0

 
$
1,311.6

 
$
1,202.1

 
$
1,334.2