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Other Expense, Net (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Other Nonoperating Income (Expense) [Abstract]    
Losses on sales of businesses and investments $ (3.4) $ (6.6)
Vendor discounts and credit adjustments 2.4 0.1
Other (expense) income, net (0.3) 0.4
Total other expense, net $ (1.3) $ (6.1)