Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Apr. 30, 2022	Oct. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 6,942.0	$ 3,824.8
Gross change in value	(76.3)	146.3
Tax effect	(16.9)	(15.6)
Ending balance	7,013.8	6,942.0
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(320.3)	(402.3)
Gross change in value	(145.9)	82.2
Tax effect	0.0	(0.2)
Ending balance	(466.2)	(320.3)
Minimum Pension Liability
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(34.1)	(56.7)
Gross change in value	0.0	29.8
Tax effect	0.0	(7.2)
Ending balance	(34.1)	(34.1)
Derivative Instruments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	13.1	(13.0)
Gross change in value	69.6	34.3
Tax effect	(16.9)	(8.2)
Ending balance	65.8	13.1
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(341.3)	(472.0)
Ending balance	$ (434.5)	$ (341.3)