Income Taxes (Details) - USD ($)	3 Months Ended	6 Months Ended
Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	13.80%	(27.70%)	(704.20%)	4.20%
Deferred tax asset, intra-entity sale of certain intellectual property rights					$ 1,987,900,000

Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from intra-entity transfer of asset within consolidated group. Excludes intra-entity transfer of inventory.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319

Name:	us-gaap_DeferredTaxAssetIntraEntityTransferAssetOtherThanInventory
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant