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Pensions and Other Benefit Plans (Tables)
6 Months Ended
Jul. 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 Second Quarter EndedFiscal Six Months Ended
 Retirement PlansOther Benefit PlansRetirement PlansOther Benefit Plans
(Dollars in Millions)July 4, 2021June 28, 2020July 4, 2021June 28, 2020July 4, 2021June 28, 2020July 4, 2021June 28, 2020
Service cost$327 323 77 72 680 649 154 144 
Interest cost193 237 21 33 386 477 41 66 
Expected return on plan assets(647)(608)(2)(1)(1,327)(1,222)(4)(3)
Amortization of prior service cost/(credit)(45)(7)(8)(90)(15)(16)
Recognized actuarial losses316 222 37 35 630 445 75 71 
Curtailments and settlements— — — — 19 — — 
Net periodic benefit cost$144 175 126 131 280 369 251 262