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
 3 Months Ended 9 Months Ended
Sep. 29, 2017
Sep. 30, 2016
Sep. 29, 2017
Sep. 30, 2016
Net periodic pension and other Postretirement benefit cost        
Contributions to pension plan     $ 88 $ 519
Pension plans, anticipated additional contributions for remainder of current fiscal year $ 85   $ 85  
Pension Benefits        
Net periodic pension and other Postretirement benefit cost        
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 8.00%   8.00%  
Service cost $ 49 $ 59 $ 149 178
Interest cost 76 79 232 239
Expected return on plan assets (163) (161) (487) (490)
Amortization of prior service cost (credit) 0 0 0 (1)
Amortization of net actuarial loss 44 46 133 138
Net periodic benefit cost (credit) 6 23 27 64
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment 2 0 2 0
Defined Benefit Plan, Benefit Obligation, Payment for Settlement 150 0 150 0
Special termination benefits 15 4 72 17
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 0 0 0
Total cost recognized in statements of income $ 173 27 $ 251 81
Other Benefits        
Net periodic pension and other Postretirement benefit cost        
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 4.50%   4.50%  
Service cost $ 4 6 $ 13 17
Interest cost 7 8 22 23
Expected return on plan assets (3) (3) (9) (9)
Amortization of prior service cost (credit) (4) (5) (13) (14)
Amortization of net actuarial loss 2 2 6 5
Net periodic benefit cost (credit) 6 8 19 22
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Curtailment 0 0 (42) 0
Defined Benefit Plan, Benefit Obligation, Payment for Settlement     0 0
Special termination benefits 0 0 0 0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement 0 31 0 31
Total cost recognized in statements of income $ 6 $ 39 $ (23) $ 53