Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Changes In The Components Of Accumulated Other Comprehensive Income (Loss)) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Changes In The Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year $ (92.6) $ 45.9  
Change during the year 44.6 (156.1) 169.3
Balance, end of year (55.6) (92.6) 45.9
Postretirement Benefit Liability
     
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year (408.9) (305.1) (319.1)
Change during the year 26.2 (103.8) 14.0
Balance, end of year (382.7) (408.9) (305.1)
Unrealized Net Gain (Loss) on Securities
     
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year 2.6 33.6 29.4
Change during the year (0.5) (31.0) 4.2
Balance, end of year 2.1 2.6 33.6
Unrealized Net Gain on Foreign Currency Translation
     
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year 312.5 314.7 163.1
Change during the year 3.8 (2.2) 151.6
Balance, end of year 316.3 312.5 314.7
Net Unrealized Gain on Derivative Financial Instruments
     
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year 1.2 2.7 4.0
Change during the year 7.5 (1.5) (1.3)
Balance, end of year 8.7 1.2 2.7
Accumulated Other Comprehensive Income (Loss)
     
Changes in Accumulated Other Comprehensive Loss [Roll Forward]      
Balance, beginning of year (92.6) 45.9 (122.6)
Change during the year 37.0 (138.5) 168.5
Balance, end of year $ (55.6) $ (92.6) $ 45.9