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
Mar. 29, 2019
Mar. 30, 2018
Net periodic pension and other Postretirement benefit cost    
Contributions to pension plan $ 6 $ 27
Pension plans, anticipated additional contributions for remainder of current fiscal year 14  
Pension Benefits    
Net periodic pension and other Postretirement benefit cost    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ (3) (27)
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 7.70%  
Service cost $ 26 32
Interest cost 72 73
Expected return on plan assets 138 168
Amortization of prior service cost (credit) (1) 2
Amortization of net actuarial loss 38 34
Other Benefits    
Net periodic pension and other Postretirement benefit cost    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) $ 6 3
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets 4.60%  
Service cost $ 2 3
Interest cost 7 6
Expected return on plan assets 3 3
Amortization of prior service cost (credit) (1) (4)
Amortization of net actuarial loss $ 1 $ 1