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Limited Partnership Interests in BGC Holdings and Newmark Holdings - Narrative (Detail) |  | 9 Months Ended
--- | --- | ---
Jul. 01, 2023 shares | Sep. 30, 2023 partnership installment
Related Party Transaction [Line Items] |  |
Number of operating partnerships | partnership |  | 2
Conversion of stock, shares converted (in shares) | 64,000,000 |
Minimum number of shares required to be issued (in shares) | 75,000,000 |
Number of installments | installment |  | 4
LPUs |  |
Related Party Transaction [Line Items] |  |
Limited partnership interests exchange ratio |  | 0.9243
Newmark Holdings |  |
Related Party Transaction [Line Items] |  |
Calculation of contribution ratio, denominator |  | 2.2
Limited partnership interest, conversion ratio |  | 1
Percentage of preferred partnership units awarded |  | 0.6875%
Percentage of preferred partnership units awarded per calendar year |  | 2.75%
BGC Holdings |  |
Related Party Transaction [Line Items] |  |
Limited partnership interest, conversion ratio |  | 1
Percentage of preferred partnership units awarded |  | 0.6875%
Percentage of preferred partnership units awarded per calendar year |  | 2.75%

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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-4 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-5 + Details
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