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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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