Annual report pursuant to Section 13 and 15(d)

Pensions And Other Postretirement Benefits (Change In Benefit Obligations) (Details)

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Pensions And Other Postretirement Benefits (Change In Benefit Obligations) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Pension Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligations - beginning of year $ 1,022.3 $ 750.8  
Service cost (excluding expenses) 23.6 18.5 14.3
Interest cost 51.4 52.9 42.6
Plan amendments   3.7  
Actuarial loss 117.3 57.5  
Benefits paid (67.3) (67.0)  
Exchange rate gain (5.9) 10.2  
Acquired through business combinations   195.7  
Benefit obligations - end of year 1,141.4 1,022.3 750.8
Other Benefits [Member]
      
Defined Benefit Plan Disclosure [Line Items]      
Benefit obligations - beginning of year 440.2 333.0  
Service cost (excluding expenses) 11.1 7.5 5.4
Interest cost 22.3 22.0 18.9
Actuarial loss 36.5 43.6  
Benefits paid (25.5) (28.2)  
Participant contributions 4.6 6.2  
Federal subsidy on benefits paid 0.9 0.9  
Exchange rate gain (1.7) 2.9  
Acquired through business combinations   52.3  
Benefit obligations - end of year $ 488.4 $ 440.2 $ 333.0