v3.25.2
Retirement Plan And Other Post-Retirement Benefits (Narrative) (Details)
9 Months Ended
Jun. 30, 2025
USD ($)
Retirement Plan  
Defined Benefit Plan Disclosure [Line Items]  
Company's contributions $ 0
Estimated future contributions in remainder of fiscal year 0
VEBA Trusts  
Defined Benefit Plan Disclosure [Line Items]  
Company's contributions 0
Estimated future contributions in remainder of fiscal year $ 0