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Credit Facility - Interest Rate Swaps (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Jul. 31, 2018 | Jul. 31, 2017 | Nov. 01, 2018 | Oct. 31, 2017
Line of Credit Facility [Line Items] |  |  |  |  |  |
Proceeds from termination of interest rate swaps |  |  | $ 25,900,000 | $ 0 |  |
Net gains from cash flow hedges recorded in accumulated other comprehensive loss, net of tax | $ 17,800,000 |  | 17,800,000 |  |  | $ 1,700,000
Interest expense | 12,900,000 | $ 2,800,000 | 41,000,000 | $ 9,100,000 |  |
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, gross | 3,900,000 |  | 3,900,000 |  |  |
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months, net | 1,600,000 |  | 1,600,000 |  |  |
Accumulated Net Gain (Loss) from Cash Flow Hedges |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Tax related to amounts in accumulated other comprehensive loss | 7,100,000 |  | 7,100,000 |  |  | $ 1,200,000
Interest expense | 900,000 |  | 900,000 |  |  |
Interest expense, net of taxes | $ 300,000 |  | $ 300,000 |  |  |
Subsequent Event | Interest Rate Swap, Maturity 4/30/2021 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Notional amount |  |  |  |  | $ 90,000,000 |
Derivative, fixed interest rate (percent) |  |  |  |  | 2.8275% |
Subsequent Event | Interest Rate Swap, Maturity 10/31/2021 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Notional amount |  |  |  |  | $ 90,000,000 |
Derivative, fixed interest rate (percent) |  |  |  |  | 2.84% |
Subsequent Event | Interest Rate Swap, Maturity 4/30/2022 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Notional amount |  |  |  |  | $ 130,000,000 |
Derivative, fixed interest rate (percent) |  |  |  |  | 2.86% |
Subsequent Event | Interest Rate Swap, Maturity 9/1/2022 |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |
Notional amount |  |  |  |  | $ 130,000,000 |
Derivative, fixed interest rate (percent) |  |  |  |  | 2.84% |

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