Quarterly report pursuant to Section 13 or 15(d)

Pension and Other Postretirement Benefit Plans - Narrative (Details)

v3.23.1
Pension and Other Postretirement Benefit Plans - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2023
Mar. 31, 2022
Defined Benefit Plan Disclosure [Line Items]          
Settlement losses       $ (24,242) $ (35,706)
SERP, DB, and ORRP Plan          
Defined Benefit Plan Disclosure [Line Items]          
Benefit payments $ 24,242        
Settlement losses       $ 1,271  
DB Plan          
Defined Benefit Plan Disclosure [Line Items]          
Benefit payments     $ 185,958    
Settlement losses         $ 30,856
Employer contributions     $ 35,706    
Annuity contracts purchased   $ 56,274