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FINANCIAL CHARGES AND OTHER (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
FINANCIAL CHARGES AND OTHER      
Interest expense on long-term debt $ 13.9 $ 8.4 $ 12.5
Interest expense on short-term debt     2.1
Capitalized interest   0.2 0.4
Loss on interest rate swaps and options 13.6 16.5 15.1
Interest income (1.5)   (0.4)
Amortization of debt issue costs 2.0 0.5 0.4
Other   0.4  
Financial charges and other $ 28.0 $ 25.6 $ 29.3