Earnings Per Share (Schedule of Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 30,787	$ 88,067	$ 79,160	$ 71,843	$ 57,397	$ 88,951	$ 75,136	$ 74,667	$ 269,856	$ 296,151	$ 248,339
Weighted average common shares									48,061	48,615	47,913
Basic earnings per share attributable to Cooper stockholders	$ 0.64	$ 1.83	$ 1.65	$ 1.50	$ 1.18	$ 1.82	$ 1.55	$ 1.54	$ 5.61	$ 6.09	$ 5.18
Effect of dilutive stock options									899	1,070	1,239
Diluted weighted average common shares									48,960	49,685	49,152
Diluted earnings per share attributable to Cooper stockholders	$ 0.63	$ 1.80	$ 1.62	$ 1.47	$ 1.15	$ 1.79	$ 1.52	$ 1.50	$ 5.51	$ 5.96	$ 5.05