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, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 87,928	$ 44,951	$ 213,409	$ 166,844
Basic:
Weighted average common shares	48,578	48,600	48,436	48,421
Basic earnings per common share attributable to Cooper stockholders	$ 1.81	$ 0.92	$ 4.41	$ 3.45
Diluted:
Effect of potential dilutive common shares	400	600	500	800
Diluted weighted average common shares	49,048	49,244	48,902	49,157
Diluted earnings per common share attributable to Cooper stockholders	$ 1.79	$ 0.91	$ 4.36	$ 3.39