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, 2013	Jul. 31, 2013	Apr. 30, 2013	Jan. 31, 2013	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2013	Oct. 31, 2012	Oct. 31, 2011
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 57,397	$ 88,951	$ 75,136	$ 74,667	$ 71,920	$ 66,875	$ 54,921	$ 54,623	$ 296,151	$ 248,339	$ 175,430
Weighted average common shares									48,615	47,913	46,904
Basic earnings per share attributable to Cooper stockholders	$ 1.18	$ 1.82	$ 1.55	$ 1.54	$ 1.49	$ 1.39	$ 1.15	$ 1.15	$ 6.09	$ 5.18	$ 3.74
Effect of dilutive stock options									1,070	1,239	1,405
Diluted weighted average common shares									49,685	49,152	48,309
Diluted earnings per share attributable to Cooper stockholders	$ 1.15	$ 1.79	$ 1.52	$ 1.50	$ 1.46	$ 1.36	$ 1.12	$ 1.12	$ 5.96	$ 5.05	$ 3.63