Annual report pursuant to Section 13 and 15(d)

Comprehensive Income (Detail)

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Comprehensive Income (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]      
Accumulated net unrealized holding gain (loss) on available-for-sale investments $ 701 $ 231  
Accumulated net deferred tax asset valuation allowance 93 104  
Accumulated net unrealized holding gain (loss) on derivatives 93 8  
Accumulated net prior service costs (32) (32)  
Accumulated net actuarial losses (1,122) (950)  
Accumulated net foreign currency translation adjustment (132) (142)  
Total accumulated other comprehensive income (loss) (399) (781)  
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]      
Net income 11,005 12,942 11,464
Total comprehensive income 11,387 11,828 11,404
Change in unrealized holding gain (loss) on investments, Before Tax 909 35 311
Change in unrealized holding gain (loss) on investments, Tax (318) (13) (111)
Change in unrealized holding gain (loss) on investments, Net of Tax 591 22 200
Less: adjustment for (gain) loss on investments included in net income, Before Tax (187) (299) (94)
Less: adjustment for (gain) loss on investments included in net income, Tax 66 107 34
Less: adjustment for (gain) loss on investments included in net income, Net of Tax (121) (192) (60)
Change in deferred tax asset valuation allowance, Tax 0 0 72
Change in deferred tax asset valuation allowance, Net of Tax 0 0 72
Less: adjustment for (gain) loss on deferred tax asset valuation allowance included in net income, Tax (11) (99) (15)
Less: adjustment for (gain) loss on deferred tax asset valuation allowance included in net income, Net of Tax (11) (99) (15)
Change in unrealized holding gain (loss) on derivatives, Before Tax 12 20 73
Change in unrealized holding gain (loss) on derivatives, Tax 8 (16) (23)
Change in unrealized holding gain (loss) on derivatives, Net of Tax 20 4 50
Less: adjustment for amortization of (gain) loss on derivatives, Before Tax 78 (161) (80)
Less: adjustment for amortization of (gain) loss on derivatives, Tax (13) 38 17
Less: adjustment for amortization of (gain) loss on derivatives, Net of Tax 65 (123) (63)
Change in prior service costs, Before Tax (4) 0 (67)
Change in prior service costs, Tax 1 0 24
Change in prior service costs, Net of Tax (3) 0 (43)
Less: adjustment for amortization of prior service costs, Before Tax 5 7 7
Less: adjustment for amortization of prior service costs, Tax (2) (3) (3)
Less: adjustment for amortization of prior service costs, Net of Tax 3 4 4
Change in actuarial loss, Before Tax (321) (900) (300)
Change in actuarial loss, Tax 91 284 81
Change in actuarial loss, Net of Tax (230) (616) (219)
Less: adjustment for amortization of actuarial loss, Before Tax 90 43 22
Less: adjustment for amortization of actuarial loss, Tax (32) (15) (8)
Less: adjustment for amortization of actuarial loss, Net of Tax 58 28 14
Change in net foreign currency translation adjustment, Before Tax 12 (155) 0
Change in net foreign currency translation adjustment, Tax (2) 13 0
Change in net foreign currency translation adjustment, Net of Tax 10 (142) 0
Total other comprehensive income (loss), Before Tax 594 (1,410) (128)
Total other comprehensive income (loss), Tax (212) 296 68
Total other comprehensive income (loss), Net of Tax 382 (1,114) (60)
Change in net unrealized holding gain (loss) on available-for-sale investments 470 (170) 140
Change in net deferred tax asset valuation allowance (11) (99) 57
Change in net unrealized holding gain (loss) on derivatives 85 (119) (13)
Change in net prior service costs 0 4 (39)
Change in net actuarial losses (172) (588) (205)
Comprehensive Income Textual Details [Abstract]      
Defined Benefit Plan, Amortization of Net Prior Service Cost (Credit) 4    
Defined Benefit Plan, Amortization of Net Gains (Losses) $ (102)