Inventories Inventories (Policies)

6 Months Ended

Jun. 30, 2011

Inventory Disclosure [Abstract]

Inventory

All inventories are stated at the lower of cost or market. Cost for a substantial portion of U.S. inventories is determined on a last-in, first-out ("LIFO") basis. LIFO was used for approximately 32% of total inventories at

June 30, 2011 and December 31, 2010. Cost of other inventories is determined on a first-in, first-out ("FIFO") basis.