Earnings Per Share (Schedule of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Earnings Per Share [Abstract]
Net income	$ 88,951	$ 66,875	$ 238,754	$ 176,419
Basic:
Weighted average common shares (in shares)	48,791	48,110	48,588	47,832
Basic earnings per share attributable to Cooper stockholders (in dollars per share)	$ 1.82	$ 1.39	$ 4.91	$ 3.69
Diluted:
Effect of dilutive stock options (in shares)	963	1,192	1,035	1,237
Diluted weighted average common shares (in shares)	49,754	49,302	49,623	49,069
Diluted earnings per common share attributable to Cooper stockholders (in dollars per share)	$ 1.79	$ 1.36	$ 4.81	$ 3.60