Annual report pursuant to Section 13 and 15(d)

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

v3.20.2
ACCUMULATED OTHER COMPREHENSIVE INCOME - Reclassifications out of AOCI (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold $ (1,000,537) $ (994,810) $ (1,018,359)
Interest expense (34,885) (40,962) (37,427)
(Loss) income before income taxes (106,337) (38,083) 97,993
Income tax benefit (provision) 18,685 (806) 9,118
Net (loss) income (87,652) (38,889) 107,111
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 650 381 333
Actuarial losses | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Cost of goods and services sold (9,767) (4,245) (7,018)
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 (9,117) (3,864) (6,685)
Income tax benefit (provision) 2,234 947 1,638
Net (loss) income (6,883) (2,917) (5,047)
Derivatives | Reclassification out of Accumulated Other Comprehensive Income      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Interest expense (861) 3,181 1,380
(Loss) income before income taxes (861) 3,181 1,380
Income tax benefit (provision) 211 (779) (338)
Net (loss) income $ (650) $ 2,402 $ 1,042