STOCK COMPENSATION PLANS - Compensation Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense	$ 3,800,000	$ 3,100,000	$ 9,700,000	$ 13,700,000
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock based compensation expense	$ 1,808,000	1,222,000	$ 3,071,000	7,741,000
Performance Based Awards | Performance Share Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	145,197		145,197
Total stock based compensation expense	$ 0	843,000	$ 0	2,517,000
Performance Based Awards | Performance Share Plan 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	84,511		84,511
Total stock based compensation expense	$ 596,000	379,000	$ 1,859,000	5,224,000
Performance Based Awards | Performance Share Plan 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	14,022		14,022
Total stock based compensation expense	$ 1,212,000	0	$ 1,212,000	0
Performance Based Awards | Performance Share Plan 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	0		0
Total stock based compensation expense	$ 0	$ 0	$ 0	$ 0