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Income Taxes (Details 7) (USD $)
In Millions, unless otherwise specified
Dec. 29, 2012
Dec. 31, 2011
Breakdown between current and long-term net deferred tax assets    
Net deferred tax assets $ 785 $ 828
Manufacturing group
   
Breakdown between current and long-term net deferred tax assets    
Current 256 288
Non-current 591 532
Net deferred tax assets 847 820
Finance group
   
Breakdown between current and long-term net deferred tax assets    
Net deferred tax assets $ (62) $ 8