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Business Combinations - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)	Dec. 29, 2021	Oct. 01, 2021
Parnassus | Projected growth rate
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input			0.029
Parnassus | Discount rates, asset based fees
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input			0.175
Parnassus | Participant tax rate
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input			0.25
Parnassus | Discount for lack of marketability
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input			0.20
Abacus | Projected growth rate
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input		0.082
Abacus | Discount rates, performance based fees
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input		0.137
Abacus | Discount rates, asset based fees
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input		0.30
Abacus | Participant tax rate
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input		0.25
Abacus | Discount for lack of marketability
Business Acquisition
Business combination, recognized identifiable assets acquired, goodwill, and liabilities assumed, net, measurement input		0.30
Parnassus & Abacus
Business Acquisition
Acquisition-related costs incurred	$ 9.2
New investments contributed revenue	85.8
New investments contributed net income (controlling interest)	$ 16.2

X

- Definition

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net, Measurement Input

+ References

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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- Definition

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