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RESTRUCTURING CHARGES - Reconciliation of Beginning and Ended Restructuring Reserve Balances (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2023 | Oct. 31, 2022 | Oct. 31, 2021
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | $ 12.3 | $ 20.3 |
Costs incurred and charged to expense | 18.7 | 13.0 | $ 23.1
Costs paid or otherwise settled | (14.2) | (21.0) |
Restructuring reserve, ending balance | 16.8 | 12.3 | 20.3
Employee Separation Costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 11.2 | 18.6 |
Costs incurred and charged to expense | 11.8 | 6.3 | 14.9
Costs paid or otherwise settled | (6.6) | (13.7) |
Restructuring reserve, ending balance | 16.4 | 11.2 | 18.6
Other Costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve, beginning balance | 1.1 | 1.7 |
Costs incurred and charged to expense | 6.9 | 6.7 |
Costs paid or otherwise settled | (7.6) | (7.3) |
Restructuring reserve, ending balance | $ 0.4 | $ 1.1 | $ 1.7

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482047/420-10-45-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-1 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 + Details
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