Annual report pursuant to Section 13 and 15(d)

Income Taxes (Deferred Tax Amounts Classified As Current Or Long-term) (Details)

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Income Taxes (Deferred Tax Amounts Classified As Current Or Long-term) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Deferred tax assets:    
Current $ 21.9 $ 43.2
Long-term 209.5 140.3
Net deferred tax assets 839.6 541.6
Deferred tax liabilities:    
Long-term 1,062.4 63.7
Net deferred tax (liabilities) assets (831.0) 78.7
United States [Member]
   
Deferred tax assets:    
Current 17.7 2.1
Long-term 162.8 134.5
Net deferred tax assets 180.5 136.6
Foreign [Member]
   
Deferred tax assets:    
Current 4.2  
Long-term 46.7 5.8
Net deferred tax assets 231.4 142.4
Deferred tax liabilities:    
Long-term 1,062.4 63.7
Total deferred tax liabilities $ 1,062.4 $ 63.7