Fair Value Measurements - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Sep. 30, 2022 |
|
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Unrealized gains to marketable securities | $ 0.1 | |
| Equity investments without readily determinable fair values | 3.1 | $ 3.1 |
| Estimated Fair Value | Level 2 | ||
| Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
| Fair value of notes | $ 159.5 | $ 155.3 |