Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Plans (Details)

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Pension and Other Postretirement Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 27, 2013
Sep. 28, 2012
Sep. 27, 2013
Sep. 28, 2012
Net periodic pension and other Postretirement benefit cost        
Contributions to pension plan     $ 574 $ 992
Pension plans, anticipated additional contributions for remainder of current fiscal year     60  
Pension Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 69 88 207 224
Interest cost 93 97 282 292
Expected return on plan assets (163) (143) (492) (431)
Amortization of prior service cost (credit) (1) (1) (2) (2)
Amortization of net actuarial loss 50 34 149 102
Total cost (credit) recognized in statements of income 48 75 144 185
Other Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 9 8 27 25
Interest cost 10 11 31 33
Expected return on plan assets (2) (2) (7) (6)
Amortization of prior service cost (credit) (3) (13) (8) (39)
Amortization of net actuarial loss 3 2 9 5
Total cost (credit) recognized in statements of income $ 17 $ 6 $ 52 $ 18