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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)
3 Months Ended
Mar. 29, 2024
Retirement Benefits [Abstract]  
Defined Contribution Plan Disclosures
Net periodic benefit cost or income for our pension and other postretirement benefit plans consisted of the following (in millions):
Pension PlansOther Postretirement
Benefit Plans
Three Months Ended
March 29,
2024
March 31,
2023
March 29,
2024
March 31,
2023
Service cost$27 $24 $1 $
Interest cost77 81 4 
Expected return on plan assets1
(118)(119)(2)(4)
Amortization of prior service cost (credit) — (1)(1)
Amortization of net actuarial loss (gain)26 24 (1)(1)
Net periodic benefit cost (income)$12 $10 $1 $
1The weighted-average expected long-term rates of return on plan assets used in computing 2024 net periodic benefit cost (income) were 7.00% for pension plans and 4.50% for other postretirement benefit plans.