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Cash, cash equivalents, and short-term marketable securities - Narrative (Details)
$ in Millions
Sep. 30, 2022
USD ($)
security
Debt Securities, Available-for-sale [Line Items]  
Number of securities in unrealized loss position | security 23
Debt securities, available-for-sale, unrealized loss position, accumulated loss | $ $ 96.1
Securities in unrealized loss position greater than 12 months | security 0
Charges for credit-related impairments | $ $ 0.0