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Benefit Plans

6 Months Ended

Feb. 28, 2025

Retirement Benefits [Abstract]

Benefit plans

Benefit Plans

    We have various pension and other defined benefit and defined contribution plans, in which substantially all employees may participate. We also have nonqualified supplemental executive and Board of Directors retirement plans.

    Components of net periodic benefit costs for the three and six months ended February 28, 2025, and February 29, 2024, are as follows:

			Three Months Ended
			Qualified Pension Benefits												Nonqualified Pension Benefits												Other Benefits
			February 28, 2025						February 29, 2024						February 28, 2025						February 29, 2024						February 28, 2025						February 29, 2024
Components of net periodic benefit costs:			(Dollars in thousands)
Service cost			$	10,932					$	9,348					$	757					$	492					$	211					$	163
Interest cost			8,725						8,982						289						261						285						286
Expected return on assets			(11,744)						(11,965)						—						—						—						—
Prior service cost (credit) amortization			50						45						(12)						(29)						(111)						(111)
Actuarial loss (gain) amortization			3,204						449						200						95						(309)						(404)
Net periodic benefit cost (benefit)			$	11,167					$	6,859					$	1,234					$	819					$	76					$	(66)
			Six Months Ended
			Qualified Pension Benefits												Nonqualified Pension Benefits												Other Benefits
			February 28, 2025						February 29, 2024						February 28, 2025						February 29, 2024						February 28, 2025						February 29, 2024
Components of net periodic benefit costs:			(Dollars in thousands)
Service cost			$	21,864					$	18,696					$	1,514					$	984					$	422					$	325
Interest cost			17,449						17,964						577						522						570						572
Expected return on assets			(23,488)						(23,930)						—						—						—						—
Prior service cost (credit) amortization			100						89						(24)						(57)						(223)						(223)
Actuarial loss (gain) amortization			6,408						898						400						190						(617)						(808)
Net periodic benefit cost (benefit)			$	22,333					$	13,717					$	2,467					$	1,639					$	152					$	(134)

Employer Contributions

    Contributions depend primarily on market returns on the pension plan assets and minimum funding level requirements. No contributions were made to the pension plans during the six months ended February 28, 2025, and we do not anticipate being required to make contributions to our pension plans in fiscal 2025, although we may voluntarily elect to do so.

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- Definition

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 710
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/710/tableOfContent

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 712
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/712/tableOfContent

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/715/tableOfContent

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/718/tableOfContent

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- References

No definition available.

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