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Revenue Asset-Based Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |
Asset-Based Revenues | $ 2,995,933 | $ 2,497,698 | $ 2,377,729
Sponsorship Programs [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Asset-Based Revenues | 776,749 | 585,785 | 452,753
Recordkeeping [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Asset-Based Revenues | $ 561,377 | $ 485,385 | $ 415,107

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