Fair Value of Financial Instruments - Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details)	3 Months Ended	12 Months Ended
	Jan. 31, 2020 USD ($)	Oct. 31, 2020 USD ($) Security	Oct. 31, 2019 USD ($) Security	Oct. 31, 2018 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Proceeds from redemption of auction rate security		$ 5,000,000.0	$ 0	$ 2,900,000
Unrealized gain (loss) on auction rate securities		$ 0
Auction rate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in auction rate securities			$ 5,000,000.0
Number of auction rate securities | Security		0	1
Investments in auction rate securities, principal amount			$ 5,000,000.0
Proceeds from redemption of auction rate security	$ 5,000,000.0
Fair Value Measurements, Recurring | Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents		$ 394,200,000	58,500,000
Insurance deposits		700,000	800,000
Assets held in funded deferred compensation plan		2,600,000	2,500,000
Fair Value Measurements, Recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit facility		725,300,000	808,400,000
Interest rate swaps liabilities		15,500,000	14,600,000
Fair Value Measurements, Recurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments in auction rate securities		0	5,000,000.0
Investments in auction rate securities, principal amount		$ 0	$ 5,000,000.0