INCOME TAXES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 23,268	$ 12,078	$ 55,119	$ 34,868
Income before taxes from continuing operations	76,050	26,893	182,765	92,546
Restructuring charges	5,909	4,081	12,391	14,662
Restructuring charges, net of tax	4,359	3,128	9,185	11,034
Effective income tax rate reconciliation, acquired inventory sold	2,700		5,401
Effective income tax rate reconciliation, acquired inventory sold, net of tax	2,005		4,012
Effective income tax rate reconciliation, adjustments related to strategic review cost, amount	3,220		3,220
Effective income tax rate reconciliation, adjustments related to strategic review cost, net of tax	2,416		2,416
Debt extinguishment	5,287		5,287
Effective income tax rate reconciliation, debt extinguishment loss, net of tax	4,022		4,022
Other tax expense (benefit) that affect comparability	$ 913	$ 2,850	$ (661)	$ 3,219
Effective tax rate	28.60%	32.90%	28.90%	32.90%
Effective income tax rate reconciliation, acquisition cost			$ 9,303
Effective income tax rate reconciliation, acquisition cost, net of tax			8,149
Effective income tax rate reconciliation, proxy contest cost			6,952
Effective income tax rate reconciliation, proxy contest cost, net of tax			$ 5,359