Retirement Plan and Other Post-Retirement Benefits - Schedule of Expected Benefit Payments (Details) - Other Post-Retirement Benefits $ in Thousands	Sep. 30, 2023 USD ($)
Benefit Payments
2024	$ 25,334
2025	25,479
2026	25,466
2027	25,389
2028	25,260
2029 through 2033	120,390
Subsidy Receipts
2024	(1,787)
2025	(1,881)
2026	(1,969)
2027	(2,039)
2028	(2,091)
2029 through 2033	$ (10,896)

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