Financial Instruments - Other Financial Instruments (Details) - USD ($) $ in Millions	Nov. 03, 2024	Feb. 04, 2024
Investments, Debt and Equity Securities [Abstract]
Defined contribution plan, plan liabilities, fair value	$ 7.4	$ 3.2

Defined Contribution Plan, Plan Liabilities, Fair Value

No definition available.

Name:	pstg_DefinedContributionPlanPlanLiabilitiesFairValue
Namespace Prefix:	pstg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant