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Goodwill and Acquired Client Relationships - Additional Information (Details) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Intangible assets |  |  |  |
Goodwill impairment | $ 0 |  |  |
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 |  | 49,100,000 | $ 35,700,000 |
Estimated Future Amortization Expense of Finite-Lived Intangibles |  |  |  |
Intangible future amortization expense in 2023 |  | 50,000,000 |  |
Intangible future amortization expense in 2024 |  | 35,000,000 |  |
Intangible future amortization expense in 2025 |  | 30,000,000 |  |
Intangible future amortization expense in 2026 |  | 30,000,000 |  |
Intangible future amortization expense in 2027 |  | 30,000,000 |  |
Impairment of definite-lived intangible assets |  | 0 |  |
Acquired Client Relationships | Intangible Amortization and Impairments |  |  |  |
Intangible assets |  |  |  |
Amortization and impairment expenses of intangible assets |  | $ 49,100,000 | $ 35,700,000 | $ 55,300,000

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