Stock Based Compensation Plans (Stock option transactions) (Details) (USD $)	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Stock option transactions
Options outstanding, beginning of period	27,799,000
Granted shares	3,110,000
Exercised shares	(3,208,000)
Forfeited/expired shares	(657,000)
Options outstanding, end of period	27,044,000	27,799,000
Options exercisable, end of period	17,676,000
Vested or expected to vest	26,669,000
Options outstanding weighted-average exercise price, beginning of period ($ per share)	$ 26.50
Granted, weighted-average exercise price ($ per share)	$ 25.07
Exercised weighted-average exercise price ($ per share)	$ 15.75
Forfeited/expired weighted-average exercise price ($ per share)	$ 31.01
Options outstanding weighted-average exercise price, end of period ($ per share)	$ 27.50	$ 26.50
Options exercisable, weighted-average exercise price ($ per share)	$ 27.04
Vested or expected to vest, weighted-average exercise price ($ per share)	$ 27.49
Options outstanding weighted-average remaining contractual term (in years)	4 years 10 months
Options exercisable weighted-average contractual term (in years)	3 years 5 months
Vested or expected to vest, weighted-average remaining contractual term (in years)	4 years 10 months
Options outstanding, aggregate intrinsic value	$ 87,714,000
Options exercisable, aggregate intrinsic value	69,528,000
Vested or expected to vest, aggregate intrinisic value	86,987,000
Fair value of options vested in the period	30,000,000
Cash received from exercises of stock options under equity incentive plans	50,000,000	53,500,000	49,500,000
The total intrinsic value of options exercised during the period	39,500,000	36,800,000	50,700,000
Compensation cost related to unvested stock options granted under the Company's plan, not yet recognized	$ 28,200,000
Weighted-average period over which compensation cost related to unvested options is expected to be recognized (in years)	2 years 8 months
Stock options granted in November 2012	2,200,000
Grant date fair value of November 2012 stock option grants	$ 28.92