v2.4.0.6
Pension, Retiree Medical and Savings Plans (Selected Financial Information for Pension and Retiree Medical Plans) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 25, 2010
Change in fair value of plan assets      
Employer contributions/funding $ 1,614    
Components of the (decrease)/increase in net loss/(gain) included in accumulated other comprehensive loss      
Amortization and settlement of losses 41 1,468 260
U.S. [Member]
      
Change in projected benefit liability      
Liability at beginning of year 11,901 9,851  
Acquisitions/(divestitures)    11  
Service cost 407 350 299
Interest cost 534 547 506
Plan amendments 15 21  
Experience loss/(gain) 932 1,484  
Benefit payments (278) (414)  
Settlement/curtailment (633) (20)  
Special termination benefits 8 71  
Foreign currency adjustment        
Other        
Liability at end of year 12,886 11,901 9,851
Change in fair value of plan assets      
Fair value at beginning of year 9,072 8,870  
Acquisitions/(divestitures)    11  
Actual return on plan assets 1,282 542  
Employer contributions/funding 1,368 63  
Participant contributions        
Benefit payments (278) (414)  
Settlement (627)     
Foreign currency adjustment        
Fair value at end of year 10,817 9,072 8,870
Funded status (2,069) (2,829)  
Amounts recognized      
Other assets        
Other current liabilities (51) (91)  
Other liabilities (2,018) (2,738)  
Net amount recognized (2,069) (2,829)  
Amounts included in accumulated other comprehensive loss (pre-tax)      
Net loss/(gain) 4,212 4,217  
Prior service cost/(credit) 121 122  
Total 4,333 4,339  
Components of the (decrease)/increase in net loss/(gain) included in accumulated other comprehensive loss      
Change in discount rate 776 1,710  
Employee-related assumption changes 135 (140)  
Liability-related experience different from assumptions 66 (85)  
Actual asset return different from expected return (486) 162  
Amortization and settlement of losses (451) (147)  
Other, including foreign currency adjustments (45) (9)  
Total (5) 1,491  
Liability at end of year for service to date 11,643 11,205  
International [Member]
      
Change in projected benefit liability      
Liability at beginning of year 2,381 2,142  
Acquisitions/(divestitures)    (63)  
Service cost 100 95 81
Interest cost 115 117 106
Plan amendments    (16)  
Experience loss/(gain) 200 224  
Benefit payments (76) (69)  
Settlement/curtailment (40) (15)  
Special termination benefits 1 1  
Foreign currency adjustment 102 (41)  
Other 2 3  
Liability at end of year 2,788 2,381 2,142
Change in fair value of plan assets      
Fair value at beginning of year 2,031 1,896  
Acquisitions/(divestitures)    (1)  
Actual return on plan assets 206 79  
Employer contributions/funding 246 176  
Participant contributions 3 3  
Benefit payments (76) (69)  
Settlement (33) (30)  
Foreign currency adjustment 86 (23)  
Fair value at end of year 2,463 2,031 1,896
Funded status (325) (350)  
Amounts recognized      
Other assets 51 55  
Other current liabilities (2) (1)  
Other liabilities (374) (404)  
Net amount recognized (325) (350)  
Amounts included in accumulated other comprehensive loss (pre-tax)      
Net loss/(gain) 1,096 977  
Prior service cost/(credit) (3) (2)  
Total 1,093 975  
Components of the (decrease)/increase in net loss/(gain) included in accumulated other comprehensive loss      
Change in discount rate 188 302  
Employee-related assumption changes (2) (51)  
Liability-related experience different from assumptions 14 (27)  
Actual asset return different from expected return (60) 57  
Amortization and settlement of losses (64) (55)  
Other, including foreign currency adjustments 43 (16)  
Total 119 210  
Liability at end of year for service to date 2,323 1,921  
Retiree Medical Plan [Member]
      
Change in projected benefit liability      
Liability at beginning of year 1,563 1,770  
Acquisitions/(divestitures)        
Service cost 50 51 54
Interest cost 65 88 93
Plan amendments    3  
Experience loss/(gain) (63) (239)  
Benefit payments (111) (110)  
Settlement/curtailment        
Special termination benefits 5 1  
Foreign currency adjustment 2 (1)  
Other        
Liability at end of year 1,511 1,563 1,770
Change in fair value of plan assets      
Fair value at beginning of year 190 190  
Acquisitions/(divestitures)        
Actual return on plan assets 35     
Employer contributions/funding 251 110  
Participant contributions        
Benefit payments (111) (110)  
Settlement        
Foreign currency adjustment        
Fair value at end of year 365 190 190
Funded status (1,146) (1,373)  
Amounts recognized      
Other assets        
Other current liabilities (71) (124)  
Other liabilities (1,075) (1,249)  
Net amount recognized (1,146) (1,373)  
Amounts included in accumulated other comprehensive loss (pre-tax)      
Net loss/(gain) (44) 32  
Prior service cost/(credit) (92) (118)  
Total (136) (86)  
Components of the (decrease)/increase in net loss/(gain) included in accumulated other comprehensive loss      
Change in discount rate 84 115  
Employee-related assumption changes (67) (125)  
Liability-related experience different from assumptions (80) (210)  
Actual asset return different from expected return (13) 14  
Amortization and settlement of losses    (12)  
Other, including foreign currency adjustments    (20)  
Total $ (76) $ (238)