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DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 USD ($) segment | Mar. 31, 2024 USD ($) | Dec. 31, 2024
Concentration Risk [Line Items] |  |  |
Number of reportable segments | segment | 2 |  |
Advertising costs | $ 90.7 | $ 61.6 |
Selling and marketing expenses not directly related to a revenue generating transaction | $ 203.4 | $ 210.9 |
Minimum |  |  |
Concentration Risk [Line Items] |  |  |
Settlements receivable period | 1 day |  |
Maximum |  |  |
Concentration Risk [Line Items] |  |  |
Settlements receivable period | 2 days |  |
Settlements Receivable | Credit Concentration Risk | Third Party Processor One |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 41.00% |  | 42.00%
Settlements Receivable | Credit Concentration Risk | Third Party Processor Two |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 18.00% |  | 17.00%
Settlements Receivable | Credit Concentration Risk | Third Party Processor Three |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 14.00% |  | 13.00%
Settlements Receivable | Credit Concentration Risk | Third Party Processor Four |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk | 11.00% |  |

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