Fair Value Measurements - Additional Information (Details)	3 Months Ended	6 Months Ended
Jul. 31, 2022 USD ($)	Jul. 31, 2022 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair value measurement, transfers level 1 to level 2	$ 0	$ 0
Fair value measurement, transfers level 2 to level 1	0	0
Fair value measurement, transfers to level 3	$ 0	$ 0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration