Credit Facility - Interest Rate Swaps (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018	Nov. 01, 2018	Oct. 31, 2018
Line of Credit Facility [Line Items]
Net gains from cash flow hedges recorded in accumulated other comprehensive loss, net of tax	$ 4,800,000		$ 4,800,000			$ 17,800,000
Interest expense	12,900,000	$ 12,900,000	39,200,000	$ 41,000,000.0
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, gross	1,100,000		1,100,000
Tax to be reclassified during next 12 months	500,000		500,000
Accumulated Net Gain (Loss) from Cash Flow Hedges
Line of Credit Facility [Line Items]
Tax related to amounts in accumulated other comprehensive loss	2,200,000		2,200,000			$ 7,100,000
Interest expense	1,000,000.0		3,100,000
Interest expense, net of taxes	$ 400,000		$ 1,200,000
Interest Rate Swap, Maturity April 30, 2021
Line of Credit Facility [Line Items]
Notional amount					$ 90,000,000.0
Derivative, fixed interest rate (percent)					2.83%
Interest Rate Swap, Maturity October 31, 2021
Line of Credit Facility [Line Items]
Notional amount					$ 90,000,000.0
Derivative, fixed interest rate (percent)					2.84%
Interest Rate Swap, Maturity April 30, 2022
Line of Credit Facility [Line Items]
Notional amount					$ 130,000,000.0
Derivative, fixed interest rate (percent)					2.86%
Interest Rate Swap, Maturity September 1, 2022
Line of Credit Facility [Line Items]
Notional amount					$ 130,000,000.0
Derivative, fixed interest rate (percent)					2.84%