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Prepaid Expenses and Other Current Assets (Details) (USD $)
In Millions
Sep. 30, 2011
Dec. 31, 2010
Prepaid Expenses and Other Current Assets Disclosure [Abstract]  
Prepaid Expenses$ 57.4$ 45.1
Income Tax Receivable28.542.4
Value Added Taxes Receivable19.821.5
Other Assets, Current53.659.4
Prepaid Expense and Other Assets, Current$ 159.3$ 168.4