Goodwill and Intangible Assets - Additional Information (Detail) $ in Thousands	12 Months Ended
Dec. 31, 2022 USD ($) Segment	Dec. 31, 2021 USD ($) Segment
Goodwill and Intangible Assets [Line Items]
Goodwill, carrying value	$ 1,890,202	$ 1,890,202
Number of business segments \| Segment	4	4
Expected amortization of intangibles, 2022	$ 38,100
Expected amortization of intangibles, 2023	30,500
Expected amortization of intangibles, 2024	30,500
Expected amortization of intangibles, 2025	30,400
Expected amortization of intangibles, 2026	$ 29,300
Intangible assets expected to amortize over a weighted-average period	7 years 1 month 6 days
Private Equity Segment
Goodwill and Intangible Assets [Line Items]
Goodwill, carrying value	$ 870,000	$ 870,000
Real Estate Segment
Goodwill and Intangible Assets [Line Items]
Goodwill, carrying value	421,700	421,700
Hedge Fund Solutions
Goodwill and Intangible Assets [Line Items]
Goodwill, carrying value	172,100	172,100
Credit & Insurance Segment
Goodwill and Intangible Assets [Line Items]
Goodwill, carrying value	$ 426,400	$ 426,400

Intangible Assets [Line Items]

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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