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Schedule II - Consolidated Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Millions | 12 Months Ended
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Oct. 31, 2018 | Oct. 31, 2017 | Oct. 31, 2016
Allowance for doubtful accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | $ 8.9 | $ 8.8 | $ 11.8
Charged to Costs and Expenses | 0.4 | 0.5 | 1.7
Charged to Other Accounts | (4.6) | (0.2) | (4.2)
Deductions | (0.5) | (0.2) | (0.5)
Balance at End of Period | 4.2 | 8.9 | 8.8
Environmental reserves |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 7.1 | 6.8 | 8.2
Charged to Costs and Expenses | 1.3 | 1.1 | 1.1
Charged to Other Accounts | (1.6) | (1.1) | (2.5)
Deductions | 0.0 | 0.3 | 0.0
Balance at End of Period | $ 6.8 | $ 7.1 | $ 6.8

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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