Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 74,125	$ 60,713	$ 125,481	$ 121,892
Basic:
Weighted average common shares	48,428	48,463	48,365	48,330
Basic earnings per common share attributable to Cooper stockholders	$ 1.53	$ 1.25	$ 2.59	$ 2.52
Diluted:
Effect of potential dilutive common shares	500	700	400	800
Diluted weighted average common shares	48,853	49,163	48,838	49,139
Diluted earnings per common share attributable to Cooper stockholders	$ 1.52	$ 1.23	$ 2.57	$ 2.48