Inventories (Details) (USD $) In Millions, unless otherwise specified	Jul. 02, 2011	Dec. 31, 2010
Inventories
Raw materials and supplies in inventory, percentage	43.00%	41.00%
Finished and semi-finished products in inventory, percentage	57.00%	59.00%
Inventories valued using LIFO, percentage	50.00%	45.00%
Increased value of inventory if FIFO method had been used	$ 683.4	$ 620.4
Lower of cost or market adjustments	$ 5.0	$ 2.9