Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018
Goodwill [Roll Forward]
Balance, beginning	$ 2,392.1	$ 2,354.8
Net additions	36.1	71.2
Translation	0.7	(33.9)
Balance, ending	2,428.9	2,392.1
CooperVision
Goodwill [Roll Forward]
Balance, beginning	1,742.9	1,735.7
Net additions	14.1	36.8
Translation	8.4	(29.6)
Balance, ending	1,765.4	1,742.9
Goodwill deductible for tax purposes	29.2	51.8
CooperSurgical
Goodwill [Roll Forward]
Balance, beginning	649.2	619.1
Net additions	22.0	34.4
Translation	(7.7)	(4.3)
Balance, ending	663.5	649.2
Goodwill deductible for tax purposes	$ 146.8	$ 247.1