Exchangeable preferred limited partnership units issued.

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- Definition

Exchangeable Preferred Limited Partnership Units, Number Of Tranches

+ References

No definition available.

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- Definition

Issuance of common stock upon exchange of non-exchangeable limited partnership units.

+ References

No definition available.

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- Definition

Limited partnership units exchange ratio.

+ References

No definition available.

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- Definition

Percentage of profits allocated to preferred partnership units.

+ References

No definition available.

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- Definition

Post termination award payout period.

+ References

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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.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Limited Partnership Interests in Newmark Holdings and BGC Holdings (Details) shares in Millions, $ in Millions	3 Months Ended				12 Months Ended
	Mar. 31, 2020 tranche shares	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2019	Sep. 26, 2018 USD ($) tranche	Jun. 18, 2018 USD ($)	Dec. 13, 2017
Related Party Transaction [Line Items]
Payout period for post-termination awards	4 years
Percentage to preferred units	0.6875%	0.6875%	0.6875%	0.6875%	2.75%
Issuance Of Common Stock Upon Exchange Of Non Exchangeable Limited Partnership Units \| shares	22.9
Non Distribution Earning Units
Related Party Transaction [Line Items]
Award vesting period	4 years
Class A Common Stock
Related Party Transaction [Line Items]
Limited partnership units exchange ratio	0.9461							1
Newmark OpCo \| RBC
Related Party Transaction [Line Items]
Exchangeable preferred limited partnership units issued (in shares) \| $						$ 150.0	$ 175.0
Exchangeable preferred limited partnership units, number of tranches \| tranche	4					4