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Face (par) amount of debt instrument at time of issuance.

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The Company and Summary of Significant Accounting Policies and Estimates (Details Textual)	3 Months Ended		12 Months Ended
	Oct. 31, 2020 customer	Oct. 31, 2019 customer	Jul. 31, 2020 customer	Mar. 31, 2018 USD ($)
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Percentage of Revenue	10.00%	10.00%
Percentage of accounts receivable	10.00%		10.00%
Revenue, performance obligations, timing	Subscriptions are typically sold with a three-to-five year initial term with a customer option to renew on an annual basis after the initial term. Term licenses generally have a two-year initial term with a customer option to renew on an annual basis after the initial term. In certain circumstances, the Company will enter into term licenses with an initial term of more than two years or a renewal period longer than one year. Support for term licenses follows the same contract periods. Professional services typically are time and materials contracts that last for an average period of approximately one year.
Capitalized contract cost, amortization period	5 years
Customer Concentration Risk \| Revenue Benchmark
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Number of customers, concentration of credit risk	1	0
Customer Concentration Risk \| Accounts Receivable
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Number of customers, concentration of credit risk	1		0
Restricted Stock Units (RSUs)
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Period of time based Vesting	4 years
TSR PSUs
Company and Summary of Significant Accounting Policies and Estimates (Textual) [Abstract]
Period of time based Vesting	3 years
Senior Notes \| Convertible Senior Notes, 1.250%
Finite-Lived Intangible Assets [Line Items]
Aggregate principal amount \| $				$ 400,000,000.0
Stated interest rate				1.25%
Minimum \| Computer software
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted-Average Useful Life (in years)	3 years
Maximum \| Computer software
Finite-Lived Intangible Assets [Line Items]
Remaining Weighted-Average Useful Life (in years)	5 years