Intangible Assets (Schedule of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Goodwill [Roll Forward]
Balance, beginning	$ 2,354.8	$ 2,164.7
Net additions during the three months ended January 31, 2018	36.4	123.0
Translation	63.2	67.1
Balance, ending	2,454.4
CooperVision
Goodwill [Roll Forward]
Balance, beginning	1,735.7	1,646.4
Net additions during the three months ended January 31, 2018	36.4	28.6
Translation	55.2	60.7
Balance, ending	1,827.3
CooperSurgical
Goodwill [Roll Forward]
Balance, beginning	619.1	518.3
Net additions during the three months ended January 31, 2018	0.0	94.4
Translation	8.0	$ 6.4
Balance, ending	$ 627.1