Quarterly report pursuant to Section 13 or 15(d)

Comprehensive Income, Accumulated Other Comprehensive Income (Loss) (Detail)

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Comprehensive Income, Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     $ (399)  
Other comprehensive income before reclassifications     787  
Amounts reclassified out of accumulated other comprehensive ncome     64  
Tax effects     (307)  
Other comprehensive income (loss) 555 (253) 544 (76)
Accumulated other comprehensive income (loss) - ending balance 145   145  
Unrealized holding gains (losses) on available-for-sale investments [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     701  
Other comprehensive income before reclassifications     946  
Amounts reclassified out of accumulated other comprehensive ncome     (12)  
Tax effects     (327)  
Other comprehensive income (loss)     607  
Accumulated other comprehensive income (loss) - ending balance 1,308   1,308  
Accumulated Deferred Tax Asset Valuation Allowance [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     93  
Other comprehensive income before reclassifications     0  
Amounts reclassified out of accumulated other comprehensive ncome     0  
Tax effects     0  
Other comprehensive income (loss)     0  
Accumulated other comprehensive income (loss) - ending balance 93   93  
Unrealized holding gains (losses) on derivatives [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     93  
Other comprehensive income before reclassifications     (188)  
Amounts reclassified out of accumulated other comprehensive ncome     23  
Tax effects     58  
Other comprehensive income (loss)     (107)  
Accumulated other comprehensive income (loss) - ending balance (14)   (14)  
Prior service credits (costs) [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     (32)  
Other comprehensive income before reclassifications     0  
Amounts reclassified out of accumulated other comprehensive ncome     2  
Tax effects     0  
Other comprehensive income (loss)     2  
Accumulated other comprehensive income (loss) - ending balance (30)   (30)  
Actuarial gains (losses) [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     (1,122)  
Other comprehensive income before reclassifications     57  
Amounts reclassified out of accumulated other comprehensive ncome     51  
Tax effects     (38)  
Other comprehensive income (loss)     70  
Accumulated other comprehensive income (loss) - ending balance (1,052)   (1,052)  
Foreign currency translation adjustment [Member]
        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Accumulated other comprehensive income (loss) - beginning balance     (132)  
Other comprehensive income before reclassifications     (28)  
Amounts reclassified out of accumulated other comprehensive ncome     0  
Tax effects     0  
Other comprehensive income (loss)     (28)  
Accumulated other comprehensive income (loss) - ending balance $ (160)   $ (160)