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Crypto Assets Held - Narrative (Details) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 USD ($) crypto_unit | Dec. 31, 2024 USD ($) crypto_unit
Bitcoin |  |
Crypto Asset, Holding [Line Items] |  |
Number of crypto assets designated to insurance providers (in units) | 840 |
Restricted For Regulatory Capital Requirements |  |
Crypto Asset, Holding [Line Items] |  |
Number of restricted crypto assets held (in units) | 2,811 | 3,116
Fair value of restricted crypto assets held | $ | $ 320.6 | $ 290.9
Restricted For Collateral Requirements |  |
Crypto Asset, Holding [Line Items] |  |
Number of restricted crypto assets held (in units) | 1,275 | 0
Fair value of restricted crypto assets held | $ | $ 145.4 | $ 0.0

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