Earnings Per Share (Schedule of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Earnings Per Share [Abstract]
Net income	$ 71,843	$ 74,667
Basic:
Weighted average common shares (in shares)	48,006	48,476
Basic earnings per common share (in dollars per share)	$ 1.50	$ 1.54
Diluted:
Effect of dilutive stock options (in shares)	1,000	1,157
Diluted weighted average common shares (in shares)	49,006	49,633
Diluted earnings per common share (in dollars per share)	$ 1.47	$ 1.50