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 6 Months Ended
Jun. 28, 2019
Jun. 29, 2018
Jun. 28, 2019
Jun. 29, 2018
Net periodic pension and other Postretirement benefit cost        
Contributions to pension plan     $ 22 $ 34
Pension plans, anticipated additional contributions for remainder of current fiscal year $ 4   4  
Pension Benefits        
Net periodic pension and other Postretirement benefit cost        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) (2) $ 59 $ (5) 32
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     7.70%  
Service cost 26 31 $ 52 63
Interest cost 73 73 145 146
Expected return on plan assets (138) (162) (276) (330)
Amortization of prior service cost (credit) (1) 2 (2) 4
Amortization of net actuarial loss 38 29 76 63
Defined Benefit Plan Net Periodic Benefit Cost Excluding Settlement Curtailment and Special Termination Benefits (2) (27) (5) (54)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement 0 86 0 86
Other Benefits        
Net periodic pension and other Postretirement benefit cost        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) 5 2 $ 11 5
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     4.60%  
Service cost 3 2 $ 5 5
Interest cost 6 6 13 12
Expected return on plan assets (4) (4) (7) (7)
Amortization of prior service cost (credit) 0 (3) (1) (7)
Amortization of net actuarial loss 0 1 1 2
Defined Benefit Plan Net Periodic Benefit Cost Excluding Settlement Curtailment and Special Termination Benefits 5 2 11 (5)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement $ 0 $ 0 $ 0 $ 0