Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2017	Jan. 31, 2016
Earnings Per Share [Abstract]
Net income attributable to Cooper stockholders	$ 75.8	$ 51.4
Basic:
Weighted average common shares	48.8	48.3
Basic earnings per common share attributable to Cooper stockholders	$ 1.55	$ 1.06
Diluted:
Effect of potential dilutive common shares	0.6	0.5
Diluted weighted average common shares	49.4	48.8
Diluted earnings per common share attributable to Cooper stockholders	$ 1.53	$ 1.05