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Related Party Transactions - Transactions with the Relief Fund (Details) - Cantor Fitzgerald Relief Fund - USD ($) | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2015
Related Party Transaction [Line Items] |  |  |
Additional expense and associated liability | $ 9,200,000 | $ 8,300,000 |
Charitable contributions, additional expense recognized | 6,400,000 | 7,200,000 |
Accounts Payable and Accrued Liabilities |  |  |
Related Party Transaction [Line Items] |  |  |
Remaining charitable contributions | $ 0 | $ 1,700,000 |
Other Expenses |  |  |
Related Party Transaction [Line Items] |  |  |
Charitable contributions |  |  | $ 40,000,000

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- Definition Additional expense and associated liability to charitable contributions. + References No definition available. + Details
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- Details
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