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Commitments and Contingencies (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2011
Jun. 30, 2011
Dec. 31, 2010
Dec. 31, 2001
Expense for environmental remediation $ 2.8 $ 4.6    
Reserves for environmental matters 74.1 74.1 78.6  
Maximum annual inflation rate   2.50%    
Minimum annual inflation rate   1.50%    
Percentage of non-malignant claims, minimum     90.00%  
Settled with majority of insurers     95.00%  
Commitments and performance guarantees 312.6 312.6    
Debt Instrument, Interest Rate, Stated Percentage       11.00%
Other Discontinued Operations [Member]
       
Maximum amount of damages sought by plaintiffs 115      
Incentive plan dispute, recorded liability 33.5 33.5    
After Tax Gain (Loss) (21.0)      
Senior Notes Due in 2015 [Member]
       
Debt Instrument, Interest Rate, Stated Percentage       4.75%
Principal amount of senior notes       300.0