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Long-Term Debt - Summary of Long-Term Debt (Details) - USD ($) $ in Millions | Oct. 31, 2020 | Oct. 31, 2019
--- | --- | ---
Debt Instrument [Line Items] |  |
Long-term debt | $ 2,469.7 | $ 2,756.3
Less current portion | 123.1 | 83.7
Less deferred financing costs | 11.1 | 13.6
Long-term debt, net | 2,335.5 | 2,659.0
2019 Credit Agreement - Term Loans |  |
Debt Instrument [Line Items] |  |
Long-term debt | 1,429.8 |
Senior Notes due 2027 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt | 495.1 | 494.3
Senior Notes due 2021 | Senior Notes |  |
Debt Instrument [Line Items] |  |
Long-term debt | 234.8 | 221.7
Other debt |  |
Debt Instrument [Line Items] |  |
Long-term debt | 0.0 | 0.4
Secured Debt | 2019 Credit Agreement - Term Loans |  |
Debt Instrument [Line Items] |  |
Long-term debt | 1,429.8 | 1,612.2
Domestic Line of Credit |  |
Debt Instrument [Line Items] |  |
Long-term debt | 310.0 | 351.6
Domestic Line of Credit | Accounts receivable credit facilities |  |
Debt Instrument [Line Items] |  |
Long-term debt | 232.8 |
Less deferred financing costs | 0.2 |
Revolving Credit Facility | 2019 Credit Agreement - Term Loans |  |
Debt Instrument [Line Items] |  |
Long-term debt | 0.0 | $ 76.1
Less current portion | 123.1 |
Long-term debt, net | $ 1,306.7 |

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