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. 26, 2014
Sep. 27, 2013
Sep. 26, 2014
Sep. 27, 2013
Net periodic pension and other Postretirement benefit cost        
Contributions to pension plan     $ 168 $ 574
Pension plans, anticipated additional contributions for remainder of current fiscal year 48      
Pension Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 62 69 196 207
Interest cost 101 93 304 282
Expected return on plan assets (179) (163) (537) (492)
Amortization of prior service cost (credit) 0 (1) (1) (2)
Amortization of net actuarial loss 18 50 54 149
Net periodic benefit cost (credit) 2 48 16 144
Settlement charge 0 0 2 0
Total cost (credit) recognized in statements of income 2 48 18 144
Other Benefits
       
Net periodic pension and other Postretirement benefit cost        
Service cost 7 9 20 27
Interest cost 11 10 32 31
Expected return on plan assets (3) (2) (9) (7)
Amortization of prior service cost (credit) (4) (3) (12) (8)
Amortization of net actuarial loss 0 3 2 9
Net periodic benefit cost (credit) 11 17 33 52
Settlement charge 0 0 0 0
Total cost (credit) recognized in statements of income $ 11 $ 17 $ 33 $ 52