Stock Based Compensation Plans (Stock option transactions) (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Stock option transactions
Options outstanding, beginning of period	23,911
Granted shares	1,806
Exercised shares	(1,264)
Forfeited/expired shares	(71)
Options outstanding, end of period	24,382
Options exercisable, end of period	16,408
Vested or expected to vest	24,342
Options outstanding weighted-average exercise price, beginning of period ($ per share)	$ 28.43
Granted, weighted-average exercise price ($ per share)	$ 41.63
Exercised weighted-average exercise price ($ per share)	$ 23.71
Forfeited/expired weighted-average exercise price ($ per share)	$ 28.79
Options outstanding weighted-average exercise price, end of period ($ per share)	$ 29.65
Options exercisable, weighted-average exercise price ($ per share)	$ 29.36
Vested or expected to vest, weighted-average exercise price ($ per share)	$ 29.64
Options outstanding weighted-average remaining contractual term (in years)	4 years 10 months
Options exercisable weighted-average contractual term (in years)	3 years 4 months
Vested or expected to vest, weighted-average remaining contractual term (in years)	4 years 10 months
Options outstanding, aggregate intrinsic value	$ 199,121,000
Options exercisable, aggregate intrinsic value	142,786,000
Vested or expected to vest, aggregate intrinisic value	198,983,000
Cash received from exercises of stock options under equity incentive plans	28,000,000	83,500,000
Compensation cost related to unvested stock options granted under the Company's plan, not yet recognized	$ 42,100,000
Weighted-average period over which compensation cost related to unvested options is expected to be recognized (in years)	2 years 4 months