v3.26.3
Benefit Plans (Tables)
 12 Months Ended
Aug. 31, 2026
Retirement Benefits [Abstract]  
Schedule of Financial Information on Changes in Projected Benefit Obligation, Plan Assets Funded and Balance Sheet Status
Financial information on changes in projected benefit obligation, plan assets funded and balance sheet status as of August 31, 2026 and 2025, is as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
202620252026202520262025
(Dollars in thousands)
Change in benefit obligation:
Projected benefit obligation at beginning of period$773,522 $760,763 $31,464 $26,443 $23,627 $24,787 
Service cost45,390 43,727 3,325 3,027 840 844 
Interest cost36,106 34,898 1,340 1,154 1,125 1,140 
Actuarial loss (gain):
Experience study, lump sum, and crediting rate updates11,442 8,394 382 365 — (29)
Other demographic experience*4,556 20,025 (814)2,862 1,041 (646)
Discount rate change(33,590)(30,273)(956)(331)(1,049)(845)
Plan amendments357 (6,236)— (227)(2,423)— 
Benefits paid(105,520)(57,776)(1,999)(1,829)(1,551)(1,624)
Projected benefit obligation at end of period$732,263 $773,522 $32,742 $31,464 $21,610 $23,627 
Change in plan assets:
Fair value of plan assets at beginning of period$776,286 $781,412 $— $— $— $— 
Actual (loss) gain on plan assets25,538 22,650 — — — — 
Company contributions40,000 30,000 1,999 1,829 1,551 1,624 
Benefits paid(105,520)(57,776)(1,999)(1,829)(1,551)(1,624)
Fair value of plan assets at end of period$736,304 $776,286 $— $— $— $— 
Funded status at end of period$4,041 $2,764 $(32,742)$(31,464)$(21,610)$(23,627)
Amounts recognized on balance sheet:
Noncurrent assets$12,688 $11,969 $— $— $— $— 
Accrued benefit cost:
Current liabilities— — (5,290)(4,890)(1,700)(1,630)
Noncurrent liabilities(8,647)(9,205)(27,452)(26,574)(19,910)(21,997)
Ending balance$4,041 $2,764 $(32,742)$(31,464)$(21,610)$(23,627)
Amounts recognized in accumulated other comprehensive loss (pretax):
Prior service cost (credit)$(4,267)$(5,219)$(197)$(227)$(2,468)$(490)
Net loss (gain)269,467 278,779 7,728 10,097 (13,472)(14,662)
Ending balance$265,200 $273,560 $7,531 $9,870 $(15,940)$(15,152)
*Other demographic experience is comprised of all demographic experience different than anticipated, including terminations, retirements, deaths, pay, etc
Schedule of Information for the Pension Plans with an Accumulated Benefit Obligation in Excess of Plan Assets
Information for the pension plans with an accumulated benefit obligation in excess of plan assets is set forth below:
Years Ended August 31,
20262025
(Dollars in thousands)
Projected benefit obligation$32,742 $31,464 
Accumulated benefit obligation32,699 31,272 
Schedule of Components of Net Periodic Benefit Costs
Components of net periodic benefit costs for the years ended August 31, 2026, 2025 and 2024, are as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
202620252024202620252024202620252024
(Dollars in thousands)
Components of net periodic benefit costs:
Service cost$45,390 $43,727 $37,391 $3,325 $3,027 $1,968 $840 $844 $650 
Interest cost36,106 34,898 35,928 1,340 1,154 1,043 1,125 1,140 1,144 
Expected return on assets(50,316)(46,977)(47,860)— — — — — — 
Prior service cost (credit) amortization(595)199 178 (30)(47)(114)(445)(445)(445)
Actuarial loss (gain) amortization16,498 12,815 1,796 982 799 380 (1,197)(1,192)(1,616)
Net periodic benefit cost (benefit)$47,083 $44,662 $27,433 $5,617 $4,933 $3,277 $323 $347 $(267)
Components of net periodic benefit costs and amounts recognized in other comprehensive loss (income) for the years ended August 31, 2026, 2025 and 2024, are as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
202620252024202620252024202620252024
(Dollars in thousands)
Other comprehensive loss (income):
Prior service cost$357 $(6,236)$223 $— $(227)$— $(2,424)$— $— 
Net actuarial loss (gain)7,186 22,472 23,309 (1,388)2,896 4,087 (7)(1,519)2,145 
Amortization of actuarial (gain) loss(16,498)(12,815)(1,796)(982)(799)(380)1,197 1,192 1,616 
Amortization of prior service (credit) costs595 (199)(178)30 47 114 445 445 445 
Total recognized in other comprehensive loss (income)$(8,360)$3,222 $21,558 $(2,340)$1,917 $3,821 $(789)$118 $4,206 
Schedule of Components of Net Periodic Benefit Costs and Amounts Recognized in Other Comprehensive Loss (Income)
Components of net periodic benefit costs and amounts recognized in other comprehensive loss (income) for the years ended August 31, 2026, 2025 and 2024, are as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
202620252024202620252024202620252024
(Dollars in thousands)
Other comprehensive loss (income):
Prior service cost$357 $(6,236)$223 $— $(227)$— $(2,424)$— $— 
Net actuarial loss (gain)7,186 22,472 23,309 (1,388)2,896 4,087 (7)(1,519)2,145 
Amortization of actuarial (gain) loss(16,498)(12,815)(1,796)(982)(799)(380)1,197 1,192 1,616 
Amortization of prior service (credit) costs595 (199)(178)30 47 114 445 445 445 
Total recognized in other comprehensive loss (income)$(8,360)$3,222 $21,558 $(2,340)$1,917 $3,821 $(789)$118 $4,206 
Schedule of Estimated Amortization from Accumulated Other Comprehensive Loss Into Net Periodic Benefit Cost
Estimated amortization in fiscal 2027 from accumulated other comprehensive loss into net periodic benefit cost is as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other
Benefits
(Dollars in thousands)
Amortization of prior service costs (credit)$(607)$(30)$(242)
Amortization of actuarial loss (gain)20,351 655 (923)
Schedule of Plan Assumptions
Plan assumptions for the years ended August 31, 2026, 2025 and 2024, are as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
202620252024202620252024202620252024
Weighted-average assumptions to determine the net periodic benefit cost:
Interest credit rate4.31 %4.68 %4.80 %4.31 %4.68 %4.80 % N/A N/AN/A
Discount rate5.56 %5.12 %5.38 %4.96 %4.78 %5.22 %5.41 %5.01 %5.33 %
Expected return on plan assets6.29 %5.64 %5.64 % N/A N/AN/A N/A N/AN/A
Rate of compensation increase4.58 %4.98 %4.98 %4.58 %4.98 %4.98 % N/A N/AN/A
Weighted-average assumptions to determine the benefit obligations:
Interest credit rate4.68 %4.31 %4.68 %4.68 %4.31 %4.68 % N/A N/AN/A
Discount rate6.08 %5.61 %5.09 %5.52 %4.97 %4.78 %6.02 %5.41 %5.01 %
Rate of compensation increase4.58 %4.58 %4.98 %4.58 %4.58 %4.98 % N/A N/AN/A
Schedule of a One-Percentage -Point Change in the Assumed Health Care Cost Trend Rates A one-percentage-point change in the assumed health care cost trend rates would have the following effects:
1% Increase1% Decrease
(Dollars in thousands)
Effect on total of service and interest cost components$250 $(210)
Effect on postretirement benefit obligation1,700 (1,700)
Schedule of Retiree Benefit Payments
Our retiree benefit payments, which reflect expected future service, are anticipated to be paid as follows:
Qualified
Pension Benefits		Nonqualified
Pension Benefits		Other Benefits
(Dollars in thousands)
2027$77,300 $5,290 $1,700 
202873,300 4,880 1,700 
202971,000 4,520 1,800 
203077,500 4,400 1,800 
203184,400 5,790 1,800 
2032-2036387,100 18,090 8,900 
Schedule of Pension Plans' Recurring Fair Value Measurements by Asset Category
Our pension plans' recurring fair value measurements by asset category as of August 31, 2026 and 2025, are presented in the tables below:
2026
Level 1Level 2Level 3Total
(Dollars in thousands)
Cash and cash equivalents$25,298 $— $— $25,298 
Equities:
Common/collective trust at net asset value (1)
— — — 160,457 
Fixed income securities:
Common/collective trust at net asset value (1)
— — — 420,675 
Marketable securities23,049 84,435 — 107,484 
Partnership and joint venture interests measured at net asset value (1)
— — — 22,389 
Total$48,347 $84,435 $— $736,303 

2025
Level 1Level 2Level 3Total
(Dollars in thousands)
Cash and cash equivalents$40,786 $— $— $40,786 
Equities:
Common/collective trust at net asset value (1)
— — — 172,659 
Fixed income securities:
Common/collective trust at net asset value (1)
— — — 426,785 
Marketable securities28,079 85,685 — 113,764 
Partnership and joint venture interests measured at net asset value (1)
— — — 22,292 
Total$68,865 $85,685 $— $776,286 
(1) In accordance with ASC Topic 820-10, Fair Value Measurement, certain assets that are measured at fair value using the net asset value per share (or its equivalent) practical expedient have not been categorized in the fair value hierarchy. The fair value amounts presented in the tables above are intended to permit reconciliation of the fair value hierarchy to the amounts presented in the "Financial information on changes in projected benefit obligation, plan assets funded and balance sheet status" table above.