Selected Quarterly Financial Data (Unaudited) (Schedule of Selected Quarterly Financial Data) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Oct. 31, 2012	Jul. 31, 2012	Apr. 30, 2012	Jan. 31, 2012	Oct. 31, 2011	Jul. 31, 2011	Apr. 30, 2011	Jan. 31, 2011	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 396,301	$ 378,186	$ 344,589	$ 326,060	$ 360,909	$ 351,396	$ 325,301	$ 293,229	$ 1,445,136	$ 1,330,835	$ 1,158,517
Gross profit	252,764	240,097	220,696	210,453	223,634	202,802	201,762	176,606	924,010	804,804	676,723
Income before income taxes	82,639	71,387	62,679	58,747	62,880	49,136	39,720	41,028	275,452	192,764	124,426
Net income attributable to Cooper stockholders	$ 71,920	$ 66,875	$ 54,921	$ 54,623	$ 56,638	$ 44,217	$ 35,360	$ 39,215	$ 248,339	$ 175,430	$ 112,803
Earnings per share attributable to Cooper stockholders - basic (in dollars per share)	$ 1.49	$ 1.39	$ 1.15	$ 1.15	$ 1.19	$ 0.93	$ 0.76	$ 0.85	$ 5.18	$ 3.74	$ 2.48
Earnings per share attributable to Cooper stockholders - diluted (in dollars per share)	$ 1.46	$ 1.36	$ 1.12	$ 1.12	$ 1.15	$ 0.90	$ 0.73	$ 0.83	$ 5.05	$ 3.63	$ 2.43