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Retirement Benefits (Tables)
9 Months Ended
Sep. 30, 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 September 30,             
               
 Service cost$ -  -  2.8  2.5  2.8  2.5 
 Interest cost on projected benefit obligation  11.0  11.6  5.0  4.3  16.0  15.9 
 Return on assets – expected  (14.9)  (16.2)  (3.0)  (3.0)  (17.9)  (19.2) 
 Amortization of losses  9.7  7.0  0.9  0.5  10.6  7.5 
 Amortization of prior service cost  -  -  0.6  0.4  0.6  0.4 
 Settlement loss   1.0  -  1.5  0.7  2.5  0.7 
 Net periodic pension cost$ 6.8  2.4  7.8  5.4  14.6  7.8 
               
 Nine months ended September 30,             
               
 Service cost$ -  -  8.2  7.8  8.2  7.8 
 Interest cost on projected benefit obligation  33.0  34.7  13.9  12.9  46.9  47.6 
 Return on assets – expected  (44.9)  (48.7)  (9.1)  (9.1)  (54.0)  (57.8) 
 Amortization of losses  29.4  21.0  3.0  2.0  32.4  23.0 
 Amortization of prior service cost  -  -  1.4  1.2  1.4  1.2 
 Settlement loss   5.0  -  2.6  1.7  7.6  1.7 
 Net periodic pension cost$ 22.5  7.0  20.0  16.5  42.5  23.5 
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 September 30,             
                
 Service cost$ -  -  0.2  -  0.2  - 
 Interest cost on accumulated postretirement benefit obligations  5.6  5.9  0.7  0.7  6.3  6.6 
 Return on assets – expected  (5.3)  (6.4)  -  -  (5.3)  (6.4) 
 Amortization of losses   5.1  3.8  0.4  0.1  5.5  3.9 
 Amortization of prior service cost  -  -  0.5  0.5  0.5  0.5 
 Net periodic pension cost$ 5.4  3.3  1.8  1.3  7.2  4.6 
                
 Nine months ended September 30,             
                
 Service cost$ -  -  0.3  -  0.3  - 
 Interest cost on accumulated postretirement benefit obligations  16.8  17.9  2.2  2.1  19.0  20.0 
 Return on assets – expected  (15.9)  (19.2)  -  -  (15.9)  (19.2) 
 Amortization of losses  15.6  11.3  1.0  0.3  16.6  11.6 
 Amortization of prior service cost  -  -  1.5  1.5  1.5  1.5 
 Net periodic pension cost$ 16.5  10.0  5.0  3.9  21.5  13.9