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Inventories (Principal Categories Of Inventories) (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Inventory, Net [Abstract]    
Inventory, Finished Goods, Net of Reserves $ 576 $ 585
Inventory, Work in Process, Net of Reserves 34 36
Inventory, Raw Materials, Net of Reserves 99 101
Total $ 709 $ 722