Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jan. 31, 2017	Oct. 31, 2015
Goodwill [Roll Forward]
Balance, beginning	$ 2,164.7
Net additions during the three months ended January 31, 2017	94.8	$ 166.0
Translation	20.3	(198.4)
Balance, ending	2,279.8	2,197.1
CooperVision [Member]
Goodwill [Roll Forward]
Balance, beginning	1,646.4
Net additions during the three months ended January 31, 2017	0.0	9.1
Translation	21.1	(190.3)
Balance, ending	1,667.5	1,827.6
CooperSurgical [Member]
Goodwill [Roll Forward]
Balance, beginning	518.3
Net additions during the three months ended January 31, 2017	94.8	156.9
Translation	(0.8)	(8.1)
Balance, ending	$ 612.3	$ 369.5