Financial Derivatives and Hedging - Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	$ 6,942.0	$ 3,824.8	$ 3,628.6
Amount recognized in other comprehensive income on interest rate swaps contracts, net of tax	79.7	20.0
Amount reclassified from other comprehensive income into earnings, net of tax	1.7	6.1
Ending balance	7,174.7	6,942.0	3,824.8
Accumulated Gain (Loss), Net, Cash Flow Hedge, Before Tax, Parent
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	17.2	(17.1)
Ending balance	124.5	17.2	(17.1)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	13.1	(13.0)	0.0
Amount recognized in other comprehensive income on interest rate swap contracts, gross	105.1	26.3
Amount reclassified from other comprehensive income into earnings, gross	2.2	8.0
Ending balance	$ 94.4	$ 13.1	$ (13.0)