Goodwill and Acquired Client Relationships - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Jul. 31, 2023	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Subsequent Event | Company's Consolidated Affiliate
Estimated Future Amortization Expense of Finite-Lived Intangibles
Gross cash proceeds	$ 294,000,000
Subsequent Event | Company's Consolidated Affiliate | Third Party
Estimated Future Amortization Expense of Finite-Lived Intangibles
Percentage of outstanding equity interests acquired	100.00%
Acquired Client Relationships
Estimated Future Amortization Expense of Finite-Lived Intangibles
Intangible impairments				$ 0
Acquired Client Relationships
Intangible Assets
Amortization and impairment expenses of intangible assets				25,000,000.0
Estimated Future Amortization Expense of Finite-Lived Intangibles
Finite-lived intangible, future amortization expense, remainder of fiscal year		$ 25,000,000		25,000,000
Finite-lived intangible, future amortization expense in year one		35,000,000		35,000,000
Finite-lived intangible, future amortization expense in year two		30,000,000		30,000,000
Finite-lived intangible, future amortization expense in year three		30,000,000		30,000,000
Finite-lived intangible, future amortization expense in year four		30,000,000		30,000,000
Finite-lived intangible, future amortization expense in year five		25,000,000		25,000,000
Acquired Client Relationships | Intangible amortization and impairments
Intangible Assets
Amortization and impairment expenses of intangible assets		$ 12,500,000	$ 12,500,000	$ 25,000,000	$ 25,000,000