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Retirement Plan And Other Post-Retirement Benefits (Schedule Of Expected Benefit Payments) (Details) - Other Post-Retirement Benefit Plans [Member]
$ in Thousands
Sep. 30, 2022
USD ($)
Defined Benefit Plan Disclosure [Line Items]  
2023 - Benefit Payments $ 26,221
2023 - Subsidy Receipts (1,829)
2024 - Benefit Payments 26,337
2024 - Subsidy Receipts (1,929)
2025 - Benefit Payments 26,376
2025 - Subsidy Receipts (2,014)
2026 - Benefit Payments 26,291
2026 - Subsidy Receipts (2,096)
2027 - Benefit Payments 26,140
2027 - Subsidy Receipts (2,162)
2028 through 2032 - Benefit Payments 125,765
2028 through 2032 - Subsidy Receipts $ (11,391)