Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2014	Oct. 31, 2015	Oct. 31, 2014	Oct. 31, 2013
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 36,700	$ 45,000	$ 60,700	$ 61,200	$ 30,800	$ 88,100	$ 79,200	$ 71,800	$ 203,523	$ 269,856	$ 296,151
Weighted average common shares									48,452	48,061	48,615
Basic earnings per share attributable to Cooper stockholders	$ 0.76	$ 0.92	$ 1.25	$ 1.27	$ 0.64	$ 1.83	$ 1.65	$ 1.50	$ 4.20	$ 5.61	$ 6.09
Effect of dilutive stock options									700	900	1,100
Diluted weighted average common shares									49,179	48,960	49,685
Diluted earnings per share attributable to Cooper stockholders	$ 0.75	$ 0.91	$ 1.23	$ 1.25	$ 0.63	$ 1.80	$ 1.62	$ 1.47	$ 4.14	$ 5.51	$ 5.96