Annual report pursuant to Section 13 and 15(d)

PENSION AND OTHER POSTRETIREMENT PLANS - Contributions During Fiscal Year (Details)

v3.20.2
PENSION AND OTHER POSTRETIREMENT PLANS - Contributions During Fiscal Year (Details)
$ in Thousands
12 Months Ended
Sep. 30, 2020
USD ($)
Principal Retirement Plan  
Defined Benefit Plan Disclosure [Line Items]  
Pension $ 14,983
Other Postretirement 0
Supplemental retirement plan  
Defined Benefit Plan Disclosure [Line Items]  
Pension 821
Other Postretirement 0
Other retirement plans  
Defined Benefit Plan Disclosure [Line Items]  
Pension 422
Other Postretirement 0
Other Postretirement  
Defined Benefit Plan Disclosure [Line Items]  
Pension 0
Other Postretirement $ 847