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 6 Months Ended
Jun. 28, 2013
Jun. 29, 2012
Jun. 28, 2013
Jun. 29, 2012
Net periodic pension and other Postretirement benefit cost        
Contributions to pension plan     $ 616 $ 990
Pension plans, anticipated additional contributions for remainder of current fiscal year 14   14  
Pension Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 69 71 138 136
Interest cost 95 97 189 195
Expected return on plan assets (165) (144) (329) (288)
Amortization of prior service cost (credit) 0 0 (1) (1)
Amortization of net actuarial loss 49 34 99 68
Total cost (credit) recognized in statements of income 48 58 96 110
Other Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 9 9 18 17
Interest cost 10 11 21 22
Expected return on plan assets (3) (2) (5) (4)
Amortization of prior service cost (credit) (2) (13) (5) (26)
Amortization of net actuarial loss 3 1 6 3
Total cost (credit) recognized in statements of income $ 17 $ 6 $ 35 $ 12