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Note 7 - Inventories, Net of Inventory Reserves (Details) - Inventories, Net - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Inventories, Net [Abstract]    
Finished goods $ 585 $ 486
Work in process 267 255
Raw materials and accessories 245 302
Supplies and packing materials 288 279
Total inventories, net of inventory reserves $ 1,385 $ 1,322