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INVENTORY
12 Months Ended
Dec. 31, 2013
Inventory Disclosure [Abstract]  
INVENTORY
INVENTORY
For most domestic inventories, cost is determined principally by the LIFO method, and for non-U.S. inventories, cost is determined by the FIFO method. The valuation of LIFO inventories is made at the end of each year based on inventory levels and costs at that time. Accordingly, interim LIFO calculations are based on management's estimates of expected year-end inventory levels and costs. Because these estimates are subject to many factors beyond management's control, annual results may differ from interim results as they are subject to the final year-end LIFO inventory valuation. At December 31, 2013 and 2012, approximately 38% and 34%, respectively, of total inventories were valued using the LIFO method. The excess of current cost over LIFO cost was $70,882 at December 31, 2013 and $72,173 at December 31, 2012.