Incentive Plans - Summary of Impact of Share-Based Incentive Plans on Compensation and Benefits Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Share-based incentive awards:
Share-based incentive awards	$ 74,916	$ 51,892	$ 201,102	$ 195,779
RSUs [Member]
Share-based incentive awards:
Share-based incentive awards	37,061	30,780	98,012	101,687
PRSUs [Member]
Share-based incentive awards:
Share-based incentive awards	498	157	1,387	5,871
Restricted Stock [Member]
Share-based incentive awards:
Share-based incentive awards	6,420	2,826	19,197	14,592
Profits Interest Participation Rights [Member]
Share-based incentive awards:
Share-based incentive awards	30,762	17,980	80,454	71,662
DSUs [Member]
Share-based incentive awards:
Share-based incentive awards	$ 175	$ 149	$ 2,052	$ 1,967