Restructuring and Integration Costs (Details) (Sauflon [Member], USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Apr. 30, 2015	Oct. 31, 2014
Restructuring Reserve [Roll Forward]
Balance, beginning	$ 20.4
Additions during the period	9.7	36.1
Payments during the period	(2.5)	(0.4)
Non-cash adjustments	(14.6)	(15.3)
Balance, ending	13.0	20.4
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning	19.9
Additions during the period	(4.2)	20.3
Payments during the period	(2.5)	(0.4)
Non-cash adjustments	(0.7)	0
Balance, ending	12.5	19.9
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning	0.5
Additions during the period	0	0.5
Payments during the period	0	0
Non-cash adjustments	0	0
Balance, ending	0.5	0.5
Product Rationalization [Member]
Restructuring Reserve [Roll Forward]
Balance, beginning	0
Additions during the period	13.9	15.3
Payments during the period	0	0
Non-cash adjustments	(13.9)	(15.3)
Balance, ending	$ 0	$ 0