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Schedule of Statement of Operation by Segment (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
Operating income:            
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2) $ 899,544   $ 1,429,092   $ 152,276 $ 1,483,871
Fee income 1,303,398   4,233,120   1,303,398 4,233,120
Other operating income 85,508   67,159   172,387 129,371
Total operating income, net 2,288,450   5,729,371   1,628,061 5,846,362
General and administrative costs:            
Compensation 5,124,758   973,717   10,017,433 1,845,744
Operating expense, related party 304,954   253,951   625,246 555,653
Professional fees 640,620   176,842   1,559,709 781,504
Information technology 209,396   168,142   415,387 315,549
Clearing and other charges 226,426   368,924   228,462 379,678
General and administrative-other 669,631   251,258   1,338,757 555,337
Total general and administrative costs 7,175,785   2,192,834   14,184,994 4,433,465
Research and development costs 237,394   7,567   514,976 39,159
Total operating costs 7,413,179   2,200,401   14,699,970 4,472,624
Net operating income (loss) (5,124,729)   3,528,970   (13,071,909) 1,373,738
Other income:            
Less: interest expense        
Interest income 321,008   184,888   658,860 372,179
Net income (loss) before income taxes (4,803,721)   3,713,858   (12,413,049) 1,745,917
Income taxes 2,143   320,584   2,143 320,584
Net income (loss) (4,805,864) $ (7,609,328) 3,393,274 $ (1,967,941) (12,415,192) 1,425,333
Less net loss attributable to non-controlling interests (531,423)   (69,585)   (925,326) (163,778)
Net income (loss) attributable to MDB Capital Holdings, LLC (4,274,441)   3,462,859   (11,489,866) 1,589,111
Broker Dealer & Intellectual Property Service [Member]            
Operating income:            
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2) 899,544   1,429,092   152,276 1,483,871
Fee income 1,303,398   4,233,120   1,303,398 4,233,120
Other operating income 85,508   55,549   172,387 58,602
Total operating income, net 2,288,450   5,717,761   1,628,061 5,775,593
General and administrative costs:            
Compensation 820,017   572,674   1,499,924 1,119,475
Operating expense, related party 273,645   206,288   517,521 464,741
Professional fees 153,726   41,617   299,633 207,429
Information technology 185,202   140,076   366,116 261,952
Clearing and other charges 226,426   368,924   228,462 379,678
General and administrative-other 206,383   89,872   425,319 198,865
Total general and administrative costs 1,865,399   1,419,451   3,336,975 2,632,140
Research and development costs    
Total operating costs 1,865,399   1,419,451   3,336,975 2,632,140
Net operating income (loss) 423,051   4,298,310   (1,708,914) 3,143,453
Other income:            
Less: interest expense 165,625       276,250  
Interest income 144,775   19,519   197,234 47,881
Net income (loss) before income taxes 402,201   4,317,829   (1,787,930) 3,191,334
Income taxes   320,584   320,584
Net income (loss) 402,201   3,997,245   (1,787,930) 2,870,750
Less net loss attributable to non-controlling interests    
Net income (loss) attributable to MDB Capital Holdings, LLC 402,201   3,997,245   (1,787,930) 2,870,750
Technology Development [Member]            
Operating income:            
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)    
Fee income        
Other operating income   11,610   70,769
Total operating income, net   11,610   70,769
General and administrative costs:            
Compensation 731,608   138,470   1,121,651 170,006
Operating expense, related party    
Professional fees 289,903   27,031   546,466 208,738
Information technology 9,715   (591)   13,606 9,235
Clearing and other charges    
General and administrative-other 59,985   17,226   140,363 62,960
Total general and administrative costs 1,091,211   182,136   1,822,086 450,939
Research and development costs 237,394   7,567   514,976 39,159
Total operating costs 1,328,605   189,703   2,337,062 490,098
Net operating income (loss) (1,328,605)   (178,093)   (2,337,062) (419,329)
Other income:            
Less: interest expense 31,498       31,498  
Interest income 1,716   14   1,716 100
Net income (loss) before income taxes (1,358,387)   (178,079)   (2,366,844) (419,229)
Income taxes 2,143     2,143
Net income (loss) (1,360,530)   (178,079)   (2,368,987) (419,229)
Less net loss attributable to non-controlling interests (531,423)   (69,585)   (925,326) (163,778)
Net income (loss) attributable to MDB Capital Holdings, LLC (829,107)   (108,494)   (1,443,661) (255,451)
Other [Member]            
Operating income:            
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)    
Fee income        
Other operating income    
Total operating income, net    
General and administrative costs:            
Compensation 3,573,133   262,573   7,395,858 556,263
Operating expense, related party 31,309   47,663   107,725 90,912
Professional fees 196,991   108,194   713,610 365,337
Information technology 14,479   28,657   35,665 44,362
Clearing and other charges    
General and administrative-other 403,263   144,160   773,075 293,512
Total general and administrative costs 4,219,175   591,247   9,025,933 1,350,386
Research and development costs    
Total operating costs 4,219,175   591,247   9,025,933 1,350,386
Net operating income (loss) (4,219,175)   (591,247)   (9,025,933) (1,350,386)
Other income:            
Less: interest expense          
Interest income 371,640   165,355   767,658 324,198
Net income (loss) before income taxes (3,847,535)   (425,892)   (8,258,275) (1,026,188)
Income taxes    
Net income (loss) (3,847,535)   (425,892)   (8,258,275) (1,026,188)
Less net loss attributable to non-controlling interests    
Net income (loss) attributable to MDB Capital Holdings, LLC (3,847,535)   $ (425,892)   (8,258,275) $ (1,026,188)
Eliminations [Member]            
Operating income:            
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)        
Other operating income        
Total operating income, net        
General and administrative costs:            
Compensation        
Operating expense, related party        
Professional fees        
Information technology        
Clearing and other charges        
General and administrative-other        
Total general and administrative costs        
Research and development costs        
Total operating costs        
Net operating income (loss)        
Other income:            
Less: interest expense (197,123)       (307,748)  
Interest income (197,123)       (307,748)  
Net income (loss) before income taxes        
Income taxes        
Net income (loss)        
Less net loss attributable to non-controlling interests        
Net income (loss) attributable to MDB Capital Holdings, LLC