Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,628.6	$ 3,307.8	$ 3,175.8
Gross change in value	(33.0)	(24.4)	(47.5)
Tax effect	8.1	8.0	(3.1)
Ending balance	3,824.8	3,628.6	3,307.8
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(447.1)	(430.7)	(375.3)
ASU 2018-02 adoption			(4.8)
Ending balance	(472.0)	(447.1)	(430.7)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(403.2)	(412.2)	(353.7)
Gross change in value	0.9	9.0	(58.5)
Tax effect	0.0	0.0	0.0
ASU 2018-02 adoption			0.0
Ending balance	(402.3)	(403.2)	(412.2)
Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	0.0	0.0	0.0
Gross change in value	(17.1)	0.0	0.0
Tax effect	4.1	0.0	0.0
ASU 2018-02 adoption			0.0
Ending balance	(13.0)	0.0	0.0
Minimum Pension Liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(43.9)	(18.5)	(21.6)
Gross change in value	(16.8)	(33.4)	11.0
Tax effect	4.0	8.0	(3.1)
ASU 2018-02 adoption			(4.8)
Ending balance	$ (56.7)	$ (43.9)	$ (18.5)