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Postretirement and Postemployment Benefits (Tables)

12 Months Ended

Sep. 28, 2025

Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]

Schedule of Net Periodic Pension and Postretirement Cost (Benefit) Components

The net periodic (benefit) cost components of our pension plan is as follows:

(Thousands of Dollars)			2025						2024						2023
Service cost for benefits earned during the year			5						5						19
Interest cost on projected benefit obligation			8,137						9,274						10,368
Expected return on plan assets			(9,275)						(9,382)						(10,192)
Amortization of net (gain) loss			—						(4)						10
Amortization of prior service benefit			848						848						852
Settlement gain			—						(2,409)						—
Curtailment gain			—						—						—
Net periodic pension cost (benefit)			(285)						(1,668)						1,057

The net periodic postretirement benefit cost (benefit) components for our postretirement plans are as follows:

(Thousands of Dollars)			2025						2024						2023
Service cost for benefits earned during the year			2						50						68
Interest cost on projected benefit obligation			434						596						598
Expected return on plan assets			(1,641)						(1,279)						(1,182)
Amortization of net actuarial gain			(1,168)						(1,234)						(1,014)
Amortization of prior service benefit			(285)						(375)						(647)
Curtailment gain			—						(1,184)						—
Net periodic postretirement benefit			(2,658)						(3,426)						(2,177)

Changes in Benefit Obligations and Plan Assets

(Thousands of Dollars)			2025						2024
Benefit obligation, beginning of year			188,528						199,187
Service cost			5						5
Interest cost			8,137						9,274
Actuarial loss (gain)			(7,491)						15,703
Benefits paid			(13,655)						(13,021)
Settlements			—						(22,620)
Benefit obligation, end of year			175,524						188,528
Fair value of plan assets, beginning of year:			193,192						210,031
Actual return on plan assets			8,285						19,957
Benefits paid			(13,655)						(13,021)
Administrative expenses paid			(1,470)						(1,155)
Settlements			—						(22,620)
Fair value of plan assets, end of year			186,352						193,192
Funded status			10,828						4,664

Changes in projected benefit obligations (which approximates the accumulated benefit obligation at each period end) and plan assets are as follows:

(Thousands of Dollars)			2025						2024
Benefit obligation, beginning of year			10,217						11,252
Service cost			2						50
Interest cost			434						596
Actuarial (gain) loss			(2,290)						1,215
Benefits paid, net of premiums received			(732)						(1,712)
Liability (gain)/loss due to curtailment			—						(1,184)
Benefit obligation, end of year			7,631						10,217
Fair value of plan assets, beginning of year			27,570						25,809
Actual return on plan assets			(1,157)						2,615
Employer contributions			603						858
Benefits paid, net of premiums and Medicare Part D subsidies received			(732)						(1,712)
Plan participant contributions			—						—
Fair value of plan assets at measurement date			26,284						27,570
Funded status			18,653						17,353

Schedule of Amounts Recognized in Balance Sheet

Disaggregated amounts recognized in the Consolidated Balance Sheets are as follows:

(Thousands of Dollars)			September 28 2025						September 29 2024
Net pension assets			10,828						4,664
Accumulated other comprehensive income (before income taxes)			14,683						8,804

Disaggregated amounts recognized in the Consolidated Balance Sheets are as follows:

(Thousands of Dollars)			September 28 2025						September 29 2024
Non-current assets			22,407						23,300
Postretirement benefit obligations			(3,755)						(5,947)
Accumulated other comprehensive income (before income tax benefit)			15,594						17,556

Schedule of Amounts Recognized in Other Comprehensive Income (Loss)

Amounts recognized in accumulated other comprehensive (loss) income are as follows:

(Thousands of Dollars)			September 28 2025						September 29 2024
Unrecognized net actuarial gain			17,581						12,550
Unrecognized prior service cost			(2,898)						(3,746)
			14,683						8,804

Amounts recognized in accumulated other comprehensive income (loss) before income tax benefit are as follows:

(Thousands of Dollars)			September 28 2025						September 29 2024
Unrecognized net actuarial gain			13,872						15,548
Unrecognized prior service benefit			1,722						2,008
			15,594						17,556

Defined Benefit Plan, Assumptions

Weighted-average assumptions used to determine benefit obligations are as follows:

(Percent)			September 28 2025						September 29 2024
Discount rate			5.2						4.8
Interest crediting rate			2.5						2.5

Weighted-average assumptions used to determine net periodic benefit cost are as follows:

(Percent)			2025						2024						2023
Discount rate - service cost			5.0						5.8						5.8
Discount rate - interest cost			4.5						5.5						5.7
Expected long-term return on plan assets			5.0						5.0						5.0

Weighted-average assumptions used to determine postretirement benefit obligations are as follows:

(Percent)			September 28 2025						September 29 2024
Discount rate			5.0						4.6
Expected long-term return on plan assets			6.0						5.0

The assumptions related to the expected long-term return on plan assets are developed through an analysis of historical market returns, current market conditions, and composition of plan assets.

Weighted-average assumptions used to determine net periodic benefit cost are as follows:

(Percent)			2025						2024						2023
Discount rate - service cost			5.2						5.2						5.9
Discount rate - interest cost			4.4						4.4						5.5
Expected long-term return on plan assets			6.0						5.0						5.0

Schedule of Health Care Cost Trend Rates

Assumed health care cost trend rates are as follows:

(Percent)			September 28 2025						September 29 2024
Health care cost trend rates			12.7						18.9
Rate to which the cost trend rate is assumed to decline (the “Ultimate Trend Rate”)			4.5						4.5
Year in which the rate reaches the Ultimate Trend Rate			2034						2034

Schedule of Allocation of Plan Assets

The weighted-average asset allocation of our pension assets, is as follows:

(Percent)			Policy Allocation						Actual Allocation
Asset Class			September 28 2025			September 29 2024			September 28 2025						September 29 2024
Fixed Income			100			100			—						95
Common/collective funds			—			—			97						—
Debt securities			—			—			—						—
Hedge fund investments			—			—			1						3
Cash and cash equivalents			—			—			2						2

The weighted-average asset allocation of our postretirement assets is as follows:

(Percent)			Policy Allocation									Actual Allocation
Asset Class			September 28 2025						September 29 2024						September 28 2025						September 29 2024
Equity securities- short term bond fund			25						25						99						25
Fixed income securities			75						75						—						73
Hedge fund investment			—						—						1						—
Cash and cash equivalents			—						—						—						2

Schedule of Changes in Fair Value of Plan Assets

The fair value hierarchy of pension assets at September 28, 2025 is as follows:

(Thousands of Dollars)			NAV						Level 1						Level 2						Level 3
Cash and cash equivalents			—						3,261						—						—
Common/collective funds			181,168						—						—						—
Hedge fund investments			1,934						—						—						—

The fair value hierarchy of pension assets at September 29, 2024 was as follows:

(Thousands of Dollars)			NAV						Level 1						Level 2						Level 3
Cash and cash equivalents			—						3,191						—						—
Fixed income securities			5,043						—						179,042						—
Hedge fund investments			5,931						—						—						—

The fair value hierarchy of postretirement assets at September 28, 2025 is as follows:

(Thousands of Dollars)			NAV						Level 1						Level 2						Level 3
Cash and cash equivalents			—						43						—						—
Equity securities (including short term bond fund)			—						26,482						—						—
Hedge fund investment			213						—						—						—

The fair value hierarchy of postretirement assets at September 29, 2024 is as follows:

(Thousands of Dollars)			NAV						Level 1						Level 2						Level 3
Cash and cash equivalents			—						436						—						—
Equity securities			—						6,983						—						—
Fixed income securities			—						20,392						—						—
Hedge fund investment			236						—						—						—

Schedule of Expected Benefit Payments

We anticipate future benefit payments to be paid from the pension trust as follows:

(Thousands of Dollars)
2026			14,094
2027			14,368
2028			14,237
2029			14,083
2030			13,877
Thereafter			64,868

We anticipate future benefit payments to be paid either with future contributions to the plan or directly from plan assets, as follows:

(Thousands of Dollars)						Net Payments
2026						695
2027						703
2028						708
2029						706
2030						700
Thereafter						3,196

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