Restructuring and Integration Costs (Details) - Sauflon [Member] - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Apr. 30, 2016	Oct. 31, 2015	Oct. 31, 2014
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred as of April 30, 2016	$ 107.4
Restructuring Reserve [Roll Forward]
Balance, beginning	8.9	$ 20.4
Additions (reductions) during the period	15.7	55.6	$ 36.1
Payments during the period	(3.8)	(9.4)
Non-cash adjustments	(14.9)	(57.7)
Balance, ending	5.9	8.9	20.4
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred as of April 30, 2016	18.5
Restructuring Reserve [Roll Forward]
Balance, beginning	8.6	19.9
Additions (reductions) during the period	0.7	(2.5)	20.3
Payments during the period	(3.7)	(9.0)
Non-cash adjustments	(0.1)	0.2
Balance, ending	5.5	8.6	19.9
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred as of April 30, 2016	1.2
Restructuring Reserve [Roll Forward]
Balance, beginning	0.3	0.5
Additions (reductions) during the period	0.3	0.4	0.5
Payments during the period	(0.1)	(0.4)
Non-cash adjustments	(0.1)	(0.2)
Balance, ending	0.4	0.3	0.5
Product Rationalization [Member]
Restructuring Cost and Reserve [Line Items]
Cumulative amounts incurred as of April 30, 2016	87.7
Restructuring Reserve [Roll Forward]
Balance, beginning	0.0	0.0
Additions (reductions) during the period	14.7	57.7	15.3
Payments during the period	0.0	0.0
Non-cash adjustments	(14.7)	(57.7)
Balance, ending	$ 0.0	$ 0.0	$ 0.0