Annual report pursuant to Section 13 and 15(d)

Trading Assets (Detail)

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Trading Assets (Detail) (Debt Securities [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Debt Securities [Member]
     
Schedule Of Trading Securities And Other Trading Assets [Line Items]      
Trading Securities, Change in Unrealized Holding Gain (Loss) $ 16 $ (71) $ (50)
Net gains (losses) on derivatives and intercompany loans related to trading securities $ 11 $ 58 $ 43