| Balance Sheet Details - Investments (Details) $ in Millions | Sep. 30, 2021  USD ($) | 
|---|---|
| Balance Sheet Related Disclosures [Abstract] | |
| Long-term Investments | $ 5.0 | 
| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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