Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications out of AOCI (Details)

v3.22.2.2
ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold $ (1,240,125) $ (1,129,198) $ (1,000,537)
Other income (deductions), net (33,593) (6,762) (9,221)
(Loss) income before income taxes (104,219) 9,233 (106,337)
Income tax benefit (provision) 4,391 (6,375) 18,685
Net (loss) income (99,828) 2,858 (87,652)
Interest expense (27,725) (28,684) (34,885)
Postretirement Benefit Plans | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
(Loss) income before income taxes (30,809) (9,539) (9,117)
Income tax benefit (provision) 7,548 2,337 2,234
Net (loss) income (23,261) (7,202) (6,883)
Prior service (cost) credit | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold 516 491 650
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (deductions), net (469) (9,769) (9,767)
Prior service cost write-off | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (deductions), net 0 (261) 0
Settlement loss | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Other income (deductions), net (30,856) 0 0
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
(Loss) income before income taxes (141) (3,186) (861)
Income tax benefit (provision) 36 781 211
Net (loss) income (105) (2,405) (650)
Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income | Interest Rate Swaps      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense (1,786) (3,249) (861)
Net investment hedge | Reclassification out of Accumulated Other Comprehensive Income | Cross-Currency Swaps      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense $ 1,645 $ 63 $ 0