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Compensation - Compensation Expense Related to Class A Common Stock (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
RSU, RSU Tax Account, and restricted stock amortization | $ 33,877 | $ 29,925 | $ 115,723 | $ 70,621
Equity-based compensation and allocations of net income to limited partnership units and FPUs | 74,447 | 85,690 | 233,696 | 247,978
LPUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Issuance of common stock and grants of exchangeability | 37,239 | 37,928 | 99,703 | 101,703
Class A Common Stock | LPUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Issuance of common stock and grants of exchangeability | 37,239 | 37,928 | 99,703 | 101,703
Allocations of net income and dividend equivalents | 588 | 1,286 | 1,673 | 3,624
RSU, RSU Tax Account, and restricted stock amortization | 36,620 | 46,476 | 132,320 | 142,651
Equity-based compensation and allocations of net income to limited partnership units and FPUs | $ 74,447 | $ 85,690 | $ 233,696 | $ 247,978

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- Definition Line items represent financial concepts included in a table. 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