Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 44,951	$ 88,067	$ 166,844	$ 239,070
Basic:
Weighted average common shares	48,600	48,042	48,421	47,990
Basic earnings per common share attributable to Cooper stockholders	$ 0.92	$ 1.83	$ 3.45	$ 4.98
Diluted:
Effect of potential dilutive common shares	644	880	736	911
Diluted weighted average common shares	49,244	48,922	49,157	48,901
Diluted earnings per common share attributable to Cooper stockholders	$ 0.91	$ 1.80	$ 3.39	$ 4.89