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Retirement Benefits (Tables)
3 Months Ended
Mar. 31, 2012
Retirement Benefits Pension And Postretirement [Line Items]  
Schedule Of Net Benefit Costs [Table Text Block]
    U.S. Plans Non-U.S. Plans Total 
 (In millions)  2012 2011 2012 2011 2012 2011 
                
 Three months ended March 31,              
                
 Service cost  $ -  -  2.6  2.8  2.6  2.8 
 Interest cost on projected benefit obligation   11.0  11.5  4.1  4.3  15.1  15.8 
 Return on assets – expected   (15.1)  (16.3)  (3.0)  (3.1)  (18.1)  (19.4) 
 Amortization of (gains) losses   10.0  7.0  1.1  0.8  11.1  7.8 
 Amortization of prior service cost   -  -  0.4  0.4  0.4  0.4 
 Settlement loss   4.0  -  0.8  -  4.8  - 
 Net periodic pension cost (credit) $ 9.9  2.2  6.0  5.2  15.9  7.4 
Schedule of Costs of Retirement Plans [Table Text Block]
    UMWA plans Black lung and other plans Total 
 (In millions)  2012 2011 2012 2011 2012 2011 
                
 Three months ended March 31,              
                
 Interest cost on accumulated postretirement benefit obligations $ 5.6  6.1  0.8  0.7  6.4  6.8 
 Return on assets – expected   (5.3)  (6.4)  -  -  (5.3)  (6.4) 
 Amortization of (gains) losses   5.4  3.7  0.2  0.1  5.6  3.8 
 Amortization of prior service cost   -  -  0.5  0.5  0.5  0.5 
 Net periodic pension cost $ 5.7  3.4  1.5  1.3  7.2  4.7