Stockholders' Equity - Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,824.8	$ 3,628.6	$ 3,307.8
Gross change in value	146.3	(33.0)	(24.4)
Tax effect	(15.6)	8.1	8.0
Ending balance	6,942.0	3,824.8	3,628.6
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(472.0)	(447.1)	(430.7)
Ending balance	(341.3)	(472.0)	(447.1)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(402.3)	(403.2)	(412.2)
Gross change in value	82.2	0.9	9.0
Tax effect	(0.2)	0.0	0.0
Ending balance	(320.3)	(402.3)	(403.2)
Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(13.0)	0.0	0.0
Gross change in value	34.3	(17.1)	0.0
Tax effect	(8.2)	4.1	0.0
Ending balance	13.1	(13.0)	0.0
Minimum Pension Liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(56.7)	(43.9)	(18.5)
Gross change in value	29.8	(16.8)	(33.4)
Tax effect	(7.2)	4.0	8.0
Ending balance	$ (34.1)	$ (56.7)	$ (43.9)