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v3.20.4

Restructuring Charges - Reconciliation of Beginning and Ended Restructuring Reserve Balances (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  |  | $ 11.3 | $ 4.4 |
Costs incurred and charged to expense | $ 11.9 | $ 5.8 | 38.7 | 26.1 | $ 18.6
Costs paid or otherwise settled |  |  | (28.4) | (19.2) |
Ending balance | 21.6 | 11.3 | 21.6 | 11.3 | 4.4
Employee Separation Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  |  | 9.5 | 4.2 |
Costs incurred and charged to expense |  |  | 26.4 | 22.5 | 14.8
Costs paid or otherwise settled |  |  | (18.0) | (17.2) |
Ending balance | 17.9 | 9.5 | 17.9 | 9.5 | 4.2
Other Costs |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning balance |  |  | 1.8 | 0.2 |
Costs incurred and charged to expense |  |  | 12.3 | 3.6 | 3.8
Costs paid or otherwise settled |  |  | (10.4) | (2.0) |
Ending balance | $ 3.7 | $ 1.8 | $ 3.7 | $ 1.8 | $ 0.2

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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