Marketable Securities -Narrative (Details) |
Apr. 30, 2023
USD ($)
security
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Jan. 31, 2023
USD ($)
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| Investments, Debt and Equity Securities [Abstract] | ||
| Debt securities, available-for-sale, allowance for credit loss | $ | $ 0 | $ 0 |
| Debt securities, available-for-sale, unrealized loss position, number of positions | security | 198 |
| X | ||||||||||
- Definition Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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