STOCK COMPENSATION PLANS - Compensation Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost	$ 6,406,000	$ 3,999,000	$ 9,128,000	$ 9,909,000
Performance Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost	$ 4,742,000	2,298,000	$ 5,509,000	6,294,000
Performance Based Awards | Performance Share Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	186,951		186,951
Total compensation cost	$ 0	728,000	$ 0	1,456,000
Performance Based Awards | Performance Share Plan 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	146,169		146,169
Total compensation cost	$ 799,000	1,570,000	$ 1,566,000	4,838,000
Performance Based Awards | Performance Share Plan 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	93,022		93,022
Total compensation cost	$ 3,943,000	0	$ 3,943,000	0
Performance Based Awards | Performance Share Plan 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of share issued (in shares)	0		0
Total compensation cost	$ 0	$ 0	$ 0	$ 0