Stockholders' Equity - Components and Activity of AOCL (Details) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Components and activity of accumulated other comprehensive loss
Balance as of the beginning of the fiscal period	$ (1,510.9)	$ (1,351.7)	$ (1,151.1)
Other comprehensive (income) loss before reclassifications	3.8	(11.4)
Amounts reclassified from AOCL	5.2	15.3
Net current period other comprehensive (income) loss	9.0	3.9	7.1
Balance as of the end of the fiscal period	(1,551.9)	(1,510.9)	(1,351.7)
Total
Components and activity of accumulated other comprehensive loss
Balance as of the beginning of the fiscal period	37.0	33.1	26.0
Net current period other comprehensive (income) loss	9.0	3.9	7.1
Balance as of the end of the fiscal period	46.0	37.0	33.1
Foreign Currency Translation Adjustments
Components and activity of accumulated other comprehensive loss
Balance as of the beginning of the fiscal period	41.7	51.3
Other comprehensive (income) loss before reclassifications	(7.8)	(9.6)
Amounts reclassified from AOCL	0.0	0.0
Net current period other comprehensive (income) loss	(7.8)	(9.6)
Balance as of the end of the fiscal period	33.9	41.7	51.3
Pension Benefits
Components and activity of accumulated other comprehensive loss
Balance as of the beginning of the fiscal period	4.3	3.6
Other comprehensive (income) loss before reclassifications	0.0	0.7
Amounts reclassified from AOCL	0.0	0.0
Net current period other comprehensive (income) loss	0.0	0.7
Balance as of the end of the fiscal period	4.3	4.3	3.6
Cash Flow Derivative Instruments
Components and activity of accumulated other comprehensive loss
Balance as of the beginning of the fiscal period	(9.0)	(21.8)
Other comprehensive (income) loss before reclassifications	11.6	(2.5)
Amounts reclassified from AOCL	5.2	15.3
Net current period other comprehensive (income) loss	16.8	12.8
Balance as of the end of the fiscal period	$ 7.8	$ (9.0)	$ (21.8)