Stock-Based Compensation Plans (Stock Option Transactions) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Stock option transactions
Options outstanding, beginning of period shares	17,599
Granted shares	2,888
Exercised shares	(1,370)
Forfeited/expired shares	(22)
Options outstanding, end of period shares	19,095
Options exercisable, end of period shares	10,200
Options outstanding, weighted-average exercise price, beginning of period ($ per share)	$ 37.22
Granted, weighted-average exercise price ($ per share)	46.21
Exercised, weighted-average exercise price ($ per share)	33.88
Forfeited/expired, weighted-average exercise price ($ per share)	40.92
Options outstanding, weighted-average exercise price, end of period ($ per share)	38.81
Options exercisable, weighted-average exercise price, end of period ($ per share)	$ 34.63
Options outstanding, weighted-average remaining contractual term, end of period (in years)	5 years 10 months 24 days
Options exercisable, weighted-average remaining contractual term, end of period (in years)	4 years 1 month 6 days
Options outstanding, aggregate intrinsic value, end of period	$ 39,671
Options exercisable, aggregate intrinsic value, end of period	36,178
Cash received from exercises of stock options	45,300	$ 11,800
Compensation cost related to unvested stock options granted under the Company's Omnibus Incentive Plans, not yet recognized	$ 48,700
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average period over which compensation cost related to unvested stock options is expected to be recognized (in years)	2 years 10 months 24 days