Other Compensation and Benefits - Additional Information (Details) - USD ($)	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation	$ 1,100,000	$ 5,800,000	$ 5,500,000
Deferred compensation arrangement, award granted, amount	0	0
Deferred compensation, forfeited amount	0	0	900,000
Costs incurred for employee benefit plans	$ 5,000,000.0	4,500,000	4,400,000
Termination cost		$ 6,000,000
Deferred Profit Sharing \| Perella Weinberg Partners UK LLP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation			3,400,000
Various dates between January 1, 2022 and January 1, 2023 or earlier \| Certain U.S. Partners
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred compensation			$ 8,800,000

Deferred Compensation Arrangement with Individual, Forfeited, Amount

No definition available.

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- Definition

Amount of commitment made to pay deferred cash remuneration.

+ References

No definition available.

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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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