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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 30, 2012
Summary of Inventories    
Raw materials and supplies $ 1,332 $ 1,416
Goods in process 2,604 2,262
Finished goods 3,886 3,817
Total inventories $ 7,822 $ 7,495