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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Inventories — gross:    
Raw materials $ 239.0 $ 231.1
Work-in-process 187.9 149.7
Finished goods 482.2 437.6
Total inventories — gross 909.1 818.4
Excess and obsolete inventory reserve (70.9) (74.2)
Net inventories at FIFO cost 838.2 744.2
Excess of FIFO costs over LIFO value (36.2) (36.6)
Inventories — net $ 802.0 $ 707.6