Income Taxes	3 Months Ended
Income Taxes	Jan. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company's effective tax rates for the three months ended January 31, 2021 and January 31, 2020 were (1,406.3)% and 7.1%, respectively. The decrease was primarily due to an intra-group transfer of intellectual property during the three months ended January 31, 2021, as discussed below. The Company's effective tax rate for the three months ended January 31, 2021 was lower than the U.S. federal statutory tax rate primarily due to the intra-group transfer. The Company's effective tax rates for the three months ended January 31, 2021 and January 31, 2020 were otherwise lower than the U.S. federal statutory tax rate primarily due to earnings in foreign jurisdictions with lower tax rates and excess tax benefits from share-based compensation. In November 2020, the Company completed an intra-group transfer of certain intellectual property and related assets to a UK subsidiary as part of a group restructuring to establish headquarters operations in the UK. Income before income taxes resulting from this transfer is eliminated upon consolidation. The transfer resulted in a step-up of the UK tax-deductible basis in the intellectual property and goodwill, creating a temporary difference between the book basis and the tax basis of these assets. As a result, the Company recognized a deferred tax asset of $1,987.9 million, with a corresponding income tax benefit, during the three months ended January 31, 2021.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.