Employee Benefits - Amounts Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Amounts recognized in accumulated other comprehensive income consist of:
Net loss	$ 44.4	$ 74.2	$ 57.3
Accumulated other comprehensive income	$ 44.4	$ 74.2	$ 57.3

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
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-URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580

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-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Name:	us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant