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Stockholders' Equity - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) Income (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2020 | Oct. 31, 2018
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | $ 3,628.6 |
Gross change in value |  | $ (24.4)
Tax effect for the period |  | 8.0
Gross change in value | 16.7 |
Ending balance | 3,730.9 | 3,307.8
Foreign Currency Translation Adjustment |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (403.2) |
Gross change in value |  | 9.0
Tax effect for the period |  | 0.0
Gross change in value | 16.7 |
Ending balance | (386.5) | (412.2)
Minimum Pension Liability |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (43.9) |
Gross change in value |  | (33.4)
Tax effect for the period |  | 8.0
Gross change in value | 0.0 |
Ending balance | (43.9) | (18.5)
Accumulated Other Comprehensive Income (Loss) |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (447.1) |
Ending balance | $ (430.4) | $ (430.7)

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount before tax and reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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