Quarterly report pursuant to Section 13 or 15(d)

Comprehensive Income (Detail)

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Comprehensive Income (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 29, 2012
Oct. 01, 2011
Sep. 29, 2012
Oct. 01, 2011
Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]          
Accumulated net unrealized holding gain (loss) on available-for-sale investments $ 368   $ 368   $ 231
Accumulated net deferred tax asset valuation allowance 105   105   104
Accumulated net unrealized holding gain (loss) on derivatives 111   111   8
Accumulated net prior service costs (29)   (29)   (32)
Accumulated net actuarial losses (902)   (902)   (950)
Accumulated net foreign currency translation adjustment (154)   (154)   (142)
Total accumulated other comprehensive income (loss) (501)   (501)   (781)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]          
Change in net unrealized holding gain (loss) on available-for-sale investments 80 (161) 137 (202)  
Change in net deferred tax asset valuation allowance 1 (54) 1 (68)  
Change in net unrealized holding gain (loss) on derivatives 166 (134) 103 (29)  
Change in net prior service costs 1 2 3 2  
Change in net actuarial losses 18 6 48 (7)  
Change in net foreign currency translation adjustment 90 (157) (12) (61)  
Other comprehensive income (loss) $ 356 $ (498) $ 280 $ (365)