Quarterly report pursuant to Section 13 or 15(d)

Trading Assets (Detail)

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Trading Assets (Detail) (Marketable Debt Instruments [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jul. 02, 2011
Jun. 30, 2012
Jul. 02, 2011
Marketable Debt Instruments [Member]
       
Schedule Of Trading Securities And Other Trading Assets [Line Items]        
Trading Securities, Change in Unrealized Holding Gain (Loss) $ (37) $ 16 $ (28) $ 66
Net gains (losses) on derivatives and intercompany loans related to trading securities $ 43 $ (13) $ 43 $ (53)