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6. Long-Term Debt (Tables)
 3 Months Ended
Mar. 31, 2012
Debt [Abstract]  
Schedule of Long-term Debt Instruments [Table Text Block]
The principal components of long-term debt are as follows (in millions):

 
March 31,
2012
 
December 31, 2011
 
 
 
 
8.0% Senior Subordinated Notes due 2016
$
296.4

 
$
296.3

4.875% Senior Notes due 2020
422.9

 
422.8

Capital leases and other debt
13.0

 
13.2

 
732.3

 
732.3

Less current maturities
(0.4
)
 
(0.6
)
Long-term debt
$
731.9

 
$
731.7