Selected Quarterly Financial Data (Unaudited) (Schedule of Selected Quarterly Financial Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 561,500	$ 556,000	$ 522,400	$ 499,100	$ 518,700	$ 514,700	$ 483,800	$ 449,600	$ 2,139,000	$ 1,966,800	$ 1,797,100
Gross profit	353,400	356,200	343,900	312,400	296,000	316,600	298,500	262,000	1,365,800	1,173,100	1,070,300
Income before income taxes	96,600	107,700	109,500	80,100	68,900	93,400	82,600	50,700	394,000	295,600	215,500
Net income attributable to Cooper stockholders	$ 88,600	$ 103,600	$ 104,900	$ 75,800	$ 60,500	$ 87,900	$ 74,100	$ 51,400	$ 372,900	$ 273,900	$ 203,500
Earnings per share attributable to Cooper stockholders - basic	$ 1.82	$ 2.12	$ 2.14	$ 1.55	$ 1.25	$ 1.81	$ 1.53	$ 1.06	$ 7.63	$ 5.65	$ 4.20
Earnings per share attributable to Cooper stockholders - diluted	$ 1.78	$ 2.09	$ 2.12	$ 1.53	$ 1.23	$ 1.79	$ 1.52	$ 1.05	$ 7.52	$ 5.59	$ 4.14