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Compensation and Benefits - Components of expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Salaries, incentive compensation and benefits	$ 128,604	$ 118,271	$ 387,067	$ 350,147
Restricted share-based award compensation expense	7,489	7,752	23,549	24,477
Long-term incentive compensation expense	20,430	12,377	58,637	42,446
Compensation and benefits	149,034	130,648	$ 445,704	392,593
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Requisite Service Period, Retirement Acceleration			18 months
Deferred Bonus
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term cash incentive compensation expense	$ 12,941	$ 4,625	$ 35,088	$ 17,969

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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