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Schedule of Statement of Operation by Segment (Details) - USD ($)
 1 Months Ended 2 Months Ended 3 Months Ended 9 Months Ended
Jan. 16, 2022
Mar. 31, 2022
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2022
Jun. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Operating income (loss):                  
Unrealized loss on investment securities, net (from our licensed broker dealer)     $ (786,906)     $ 16,072   $ 696,965 $ (3,836)
Realized loss on investment securities           (7)
Other operating income     11,502     57,903   140,873 107,356
Total operating income (loss), net     (775,404)     73,975   5,070,958 103,513
General and administrative costs:                  
Compensation     1,337,771     1,130,256   3,183,515 2,219,954
Operating expense, related party     273,821     514,798   829,474 882,601
Professional fees     459,585     51,035   1,241,089 652,713
Information technology     93,326     93,465   408,875 207,944
Clearing and other charges     3,316     2,547   382,994 22,342
General and administrative-other     327,896     406,536   883,233 1,024,761
Total general and administrative costs     2,495,715     2,198,637   6,929,180 5,010,315
Research and development costs     27,936     103,633   67,095 295,779
Total operating costs     2,523,651     2,302,270   6,996,275 5,306,094
Net operating loss     (3,299,055)     (2,228,295)   (1,925,317) (5,202,581)
Other income:                  
Interest income     176,300       548,479
Loss before income taxes     (3,122,755)     (2,228,295)   (1,376,838) (5,202,581)
Income tax     63,559       384,143
Net loss $ (209,182) $ (1,078,704) (3,186,314) $ 3,393,274 $ (1,967,941) (2,228,295) $ (1,686,400) (1,760,981) (5,202,581)
Less net loss attributable to non-controlling interests     (177,853)     (144,715)   (341,631) (418,677)
Net loss attributable to MDB Capital Holdings, LLC     (3,008,461)     (2,083,580)   (1,419,350) (4,783,904)
Fee income           4,233,120
Less net loss attributable to non-controlling interests     (177,853)     (144,715)   (341,631) (418,677)
Broker Dealer & Intellectual Property Service [Member]                  
Operating income (loss):                  
Unrealized loss on investment securities, net (from our licensed broker dealer)     (786,906)     16,072   696,965 (3,836)
Realized loss on investment securities                 (7)
Other operating income     11,502     27,073   70,104 76,513
Total operating income (loss), net     (775,404)     43,145   5,000,189 72,670
General and administrative costs:                  
Compensation     793,061     633,083   1,912,536 1,359,236
Operating expense, related party     223,254     431,172   687,995 794,054
Professional fees     108,959     36,865   316,388 542,811
Information technology     71,988     85,978   333,940 187,768
Clearing and other charges     3,316     2,547   382,994 22,342
General and administrative-other     63,266     71,743   262,131 471,039
Total general and administrative costs     1,263,844     1,261,388   3,895,984 3,377,250
Research and development costs          
Total operating costs     1,263,844     1,261,388   3,895,984 3,377,250
Net operating loss     (2,039,248)     (1,218,243)   1,104,205 (3,304,580)
Other income:                  
Interest income     28,110         75,991  
Loss before income taxes     (2,011,138)     (1,218,243)   1,180,196 (3,304,580)
Income tax           320,584
Net loss     (2,011,138)     (1,218,243)   859,612 (3,304,580)
Less net loss attributable to non-controlling interests          
Net loss attributable to MDB Capital Holdings, LLC     (2,011,138)     (1,218,243)   859,612 (3,304,580)
Fee income               4,233,120  
Less net loss attributable to non-controlling interests          
Technology Development [Member]                  
Operating income (loss):                  
Unrealized loss on investment securities, net (from our licensed broker dealer)          
Realized loss on investment securities                
Other operating income         21   70,769 34
Total operating income (loss), net         21   70,769 34
General and administrative costs:                  
Compensation     119,146     82,430   289,152 313,928
Operating expense, related party          
Professional fees     92,506     14,170   301,244 84,403
Information technology     7,012     5,039   16,247 15,057
Clearing and other charges          
General and administrative-other     145,243     150,332   208,203 274,832
Total general and administrative costs     363,907     251,971   814,846 688,220
Research and development costs     27,936     103,633   67,095 295,779
Total operating costs     391,843     355,604   881,941 983,999
Net operating loss     (391,843)     (355,583)   (811,172) (983,965)
Other income:                  
Interest income             100  
Loss before income taxes     (391,843)     (355,583)   (811,072) (983,965)
Income tax     63,559       63,559
Net loss     (455,402)     (355,583)   (874,631) (983,965)
Less net loss attributable to non-controlling interests     (177,853)     (144,715)   (341,631) (418,677)
Net loss attributable to MDB Capital Holdings, LLC     (277,549)     (210,868)   (533,000) (565,288)
Fee income                
Less net loss attributable to non-controlling interests     (177,853)     (144,715)   (341,631) (418,677)
Other [Member]                  
Operating income (loss):                  
Unrealized loss on investment securities, net (from our licensed broker dealer)          
Realized loss on investment securities                
Other operating income         30,809   30,809
Total operating income (loss), net         30,809   30,809
General and administrative costs:                  
Compensation     425,564     414,743   981,827 546,790
Operating expense, related party     50,567     83,626   141,479 88,547
Professional fees     258,120       623,457 25,499
Information technology     14,326     2,448   58,688 5,119
Clearing and other charges          
General and administrative-other     119,387     184,461   412,899 278,890
Total general and administrative costs     867,964     685,278   2,218,350 944,845
Research and development costs          
Total operating costs     867,964     685,278   2,218,350 944,845
Net operating loss     (867,964)     (654,469)   (2,218,350) (914,036)
Other income:                  
Interest income     148,190         472,388  
Loss before income taxes     (719,774)     (654,469)   (1,745,962) (914,036)
Income tax          
Net loss     (719,774)     (654,469)   (1,745,962) (914,036)
Less net loss attributable to non-controlling interests          
Net loss attributable to MDB Capital Holdings, LLC     (719,774)     (654,469)   (1,745,962) (914,036)
Fee income                
Less net loss attributable to non-controlling interests