STOCK-BASED COMPENSATION PLANS STOCK-BASED COMPENSATION PLANS - Stock Option Activity (Details) - Stock option awards - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Stock Option Awards
Outstanding at the beginning of the period (in shares)	4,879,984
Granted (in shares)	554,364
Exercised (in shares)	(954,909)
Cancelled/forfeited (in shares)	(19,744)
Outstanding at the end of the period (in shares)	4,459,695	4,879,984
Exercisable at the end of the period (in shares)	3,331,979
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 20.07
Granted (in dollars per share)	55.82
Exercised (in dollars per share)	11.48
Cancelled/forfeited (in dollars per share)	51.74
Outstanding at the end of the period (in dollars per share)	26.22	$ 20.07
Exercisable at the end of the period (in dollars per share)	$ 19.64
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted-average contractual life (years)	5 years 3 months 18 days	5 years 3 months 10 days
Exercisable at the end of the period (years)	4 years 3 months 10 days
Outstanding of the beginning of the period, intrinsic value	$ 135,697
Outstanding of the end of the period, intrinsic value	163,369	$ 135,697
Exercisable at the end of the period, intrinsic value	$ 143,960