v3.26.1
Fair Value Measurements (Details) - EBP 001 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value $ 511,335,661 $ 435,396,146
BGC Group Stock Portfolio (excludes cash component)    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 3,721,546 9,948,033
Fair Value, Inputs, Level 1, Level 2, and Level 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 506,154,276 430,075,027
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 365,570,582 306,061,063
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Exchange traded funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 125,486,507 104,295,387
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Demand deposit account    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 11,375,641 10,101,242
Fair Value, Inputs, Level 1, Level 2, and Level 3 | BGC Group Stock Portfolio (excludes cash component)    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 3,632,875 9,617,335
Fair Value, Inputs, Level 1, Level 2, and Level 3 | Money Market Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 88,671  
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 506,154,276 430,075,027
Level 1 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 365,570,582 306,061,063
Level 1 | Exchange traded funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 125,486,507 104,295,387
Level 1 | Demand deposit account    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 11,375,641 10,101,242
Level 1 | BGC Group Stock Portfolio (excludes cash component)    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 3,632,875 9,617,335
Level 1 | Money Market Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 88,671  
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 2 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 2 | Exchange traded funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 2 | Demand deposit account    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 2 | BGC Group Stock Portfolio (excludes cash component)    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 2 | Money Market Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0  
Level 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 3 | Mutual funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 3 | Exchange traded funds    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 3 | Demand deposit account    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 3 | BGC Group Stock Portfolio (excludes cash component)    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0 0
Level 3 | Money Market Fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value 0  
NAV | Common collective trust    
EBP, Investment, Fair Value and NAV [Line Items]    
Participant-directed investments at fair value $ 5,181,385 $ 5,321,119