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Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) fund bank
Cash and Cash Equivalents [Line Items] |
Number of "Triple A" rated money market funds with cash, cash equivalent and restricted cash held on deposit | fund | 4
Number of global banks with cash, cash equivalent and restricted cash held on deposit | bank | 1
Maximum investment limit in any one financial institution | $ | $ 75,000,000
Investment in single mutual fund | Credit Concentration Risk |
Cash and Cash Equivalents [Line Items] |
Threshold percentage | 1.00%

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- Definition Represents the number of global banks with cash, cash equivalent and restricted cash held on deposit if disclosed as a concentration risk. + References No definition available. + Details
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- Definition Represents the number of "Triple A" rated money market funds with cash, cash equivalent and restricted cash held on deposit, if disclosed as a concentration risk. + References No definition available. + Details
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