Financial Derivatives and Hedging - Schedule of Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	$ 7,174.7	$ 6,942.0
Amount recognized in other comprehensive income on interest rate swaps contracts, net of tax	(14.8)	11.9
Amount reclassified from other comprehensive income into earnings, net of tax	(6.2)	1.4
Ending balance	7,335.7	6,926.1
Accumulated Gain (Loss), Net, Cash Flow Hedge, Before Tax, Parent
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	124.5	17.2
Ending balance	96.7	34.8
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
AOCI Attributable To Parent, Before Reclassification And Tax [Roll Forward]
Beginning balance	94.4	13.1
Amount recognized in other comprehensive income on interest rate swap contracts, gross ($(14.8) million, net of tax and $11.9 million, net of tax, respectively)	(19.5)	15.7
Amount reclassified from other comprehensive income into earnings, gross ($(6.2) million, net of tax and $1.4 million, net of tax, respectively)	(8.3)	1.9
Ending balance	$ 73.4	$ 26.4