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PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS (Tables)
6 Months Ended
Jun. 28, 2024
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs
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
June 28,
2024
June 30,
2023
June 28,
2024
June 30,
2023
Service cost$26 $23 $1 $
Interest cost77 81 5 
Expected return on plan assets1
(117)(119)(2)(3)
Amortization of prior service cost (credit)1 (1)(1)
Amortization of net actuarial loss (gain)25 24 (1)(2)
Net periodic benefit cost (income)$12 $10 $2 $
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.
Pension PlansOther Postretirement
Benefit Plans
Six Months Ended
June 28,
2024
June 30,
2023
June 28,
2024
June 30,
2023
Service cost$53 $47 $2 $
Interest cost154 162 9 14 
Expected return on plan assets1
(235)(238)(4)(7)
Amortization of prior service cost (credit)1 (2)(2)
Amortization of net actuarial loss (gain)51 48 (2)(3)
Net periodic benefit cost (income)$24 $20 $3 $
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.