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Inventories (Detail) (USD $)
In Millions, unless otherwise specified
Sep. 29, 2012
Dec. 31, 2011
Inventories [Line Items]    
Raw materials and supplies in inventory, percentage 36.00% 40.00%
Finished and semi-finished products in inventory, percentage 64.00% 60.00%
Inventories valued using the last-in, first-out 46.00% 47.00%
Increased value of inventory if FIFO method had been used $ 679.2 $ 763.2
Lower of cost or market adjustments $ 3.1 $ 6.8