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Pensions and Other Benefit Plans (Tables)
3 Months Ended
Apr. 04, 2021
Retirement Benefits [Abstract]  
Components of Net Periodic Benefit Cost
Net periodic benefit costs for the Company’s defined benefit retirement plans and other benefit plans include the following components:
Fiscal First Quarter Ended
 Retirement PlansOther Benefit Plans
(Dollars in Millions)April 4, 2021March 29, 2020April 4, 2021March 29, 2020
Service cost$353 326 77 72 
Interest cost193 240 20 33 
Expected return on plan assets(680)(614)(2)(2)
Amortization of prior service cost/(credit)(45)— (8)(8)
Recognized actuarial losses314 223 38 36 
Curtailments and settlements19 — — 
Net periodic benefit cost$136 194 125 131