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Segment and Geographic Information - Narrative (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Number of reportable segments | segment | 1 |  |
Reportable Segment |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Headcount‑related costs | $ 787,248 | $ 748,772 | $ 665,310
Segment reporting other segment item amount, net income measure | 331,414 | 152,854 | 258,992
Segment reporting other segment item amount, Adjusted OI w/SBC | 202,994 | 179,246 | 173,483
Headcount adjustment amount, Adjusted OI w/ SBC measure | $ 9,369 | $ 24,282 | $ 13,640

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