Stock Plans (Schedule of Stock Option Plans) (Details) (Stock Options [Member], USD $)	12 Months Ended
	Oct. 31, 2012
Stock Options [Member]
Number of Shares:
Outstanding at October 31, 2011	3,512,442
Granted	215,477
Exercised	(1,394,229)
Forfeited or expired	(39,982)
Outstanding at October 31, 2012	2,293,708
Vested and exercisable at October 31, 2012	1,541,142
Weighted-Average Exercise Price Per Share:
Outstanding at October 31, 2011	$ 43.96
Granted	$ 67.45
Exercised	$ 45.05
Forfeited or expired	$ 42.19
Outstanding at October 31, 2012	$ 45.26
Vested and exercisable at October 31, 2012	$ 47.49
Outstanding at October 31, 2012, Weighted Average Remaining Contractual Term (in years)	5 years 2 months 5 days
Vested and exercisable at October 31, 2012, Weighted Average Remaining Contractual Term (in years)	4 years 0 months 11 days
Vested and exercisable at October 31, 2012, Aggregate Intrinsic Value	$ 74,558,139