EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, general and administrative expenses		$ 113,754	$ 106,624
Other, net		1,004	414
Interest cost		1,570	1,407
Expected return on plan assets		(2,583)	(2,639)
Amortization:
Prior service cost		4	4
Recognized actuarial loss		222	346
Net periodic expense (income)		$ (787)	(882)
Pension settlement gain	$ 13,715
Accounting Standards Update 2017-07 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Selling, general and administrative expenses			882
Other, net			$ (882)