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Pension, Postretirement and Postemployment Defined Benefit Plans
 3 Months Ended
Dec. 29, 2024
Retirement Benefits [Abstract]  
Pension, Postretirement and Postemployment Defined Benefit Plans PENSION, POSTRETIREMENT AND POSTEMPLOYMENT DEFINED BENEFIT PLANS
We have one defined benefit pension plan that covers certain employees, including plans established under collective bargaining agreements. Additionally, we provide retiree medical and life insurance benefits under postretirement plans at several of our operating locations. Through December 29, 2024, our liability and related expense for benefits under the plans are recorded over the service period of employees based upon annual actuarial calculations.
The net periodic pension and postretirement cost (benefit) components for our plans are as follows:
PENSION PLANSThree months ended
(Thousands of Dollars)December 29,
2024		December 24,
2023
Service cost for benefits earned during the period1 1 
Interest cost on projected benefit obligation2,034 2,515 
Expected return on plan assets(2,319)(2,453)
Amortization of net (gain) loss— (2)
Amortization of prior service benefit212 212 
Settlement gain— (2,409)
Net periodic pension (benefit) cost(72)(2,136)
POSTRETIREMENT MEDICAL PLANSThree months ended
(Thousands of Dollars)December 29,
2024		December 24,
2023
Service cost for benefits earned during the period1 13 
Interest cost on projected benefit obligation108 149 
Expected return on plan assets(410)(320)
Amortization of net gain(292)(308)
Amortization of prior service benefit(71)(94)
Curtailment gain— (1,184)
Net periodic postretirement benefit(664)(1,744)
In the three months ended December 29, 2024 and December 24, 2023, we made no contributions to our pension plans. We have no required contributions to our pension plans for 2025.
Multiemployer Pension Plans
In prior periods, the Company effectuated withdrawals from several multiemployer plans. As of December 29, 2024 and September 29, 2024, we had $23.3 million and $23.6 million of accrued withdrawal liabilities. The liabilities reflect the estimated value of payments to the fund, payable over 20-years.