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Schedule of Statement of Operation by Segment (Details) - USD ($)
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Operating income:    
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2) $ (747,268) $ 54,779
Other operating income 86,879 62,212
Total operating income (loss), net (660,389) 116,991
General and administrative costs:    
Compensation 4,892,675 872,027
Operating expense, related party 320,292 301,702
Professional fees 919,089 604,662
Information technology 205,991 147,407
Clearing and other charges 2,036 10,754
General and administrative-other 669,126 304,079
Total general and administrative costs 7,009,209 2,240,631
Research and development costs 277,582 31,592
Total operating costs 7,286,791 2,272,223
Net operating loss (7,947,180) (2,155,232)
Other income:    
Less: interest expense  
Interest income 337,852 187,291
Income (loss) before income taxes (7,609,328) (1,967,941)
Income tax expense
Net loss (7,609,328) (1,967,941)
Less net loss attributable to non-controlling interests (393,903) (94,193)
Net loss attributable to MDB Capital Holdings, LLC (7,215,425) (1,873,748)
Broker Dealer & Intellectual Property Service [Member]    
Operating income:    
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2) (747,268) 54,779
Other operating income 86,879 3,053
Total operating income (loss), net (660,389) 57,832
General and administrative costs:    
Compensation 679,907 546,801
Operating expense, related party 243,876 258,453
Professional fees 145,907 165,812
Information technology 180,914 121,876
Clearing and other charges 2,036 10,754
General and administrative-other 218,936 108,993
Total general and administrative costs 1,471,576 1,212,689
Research and development costs
Total operating costs 1,471,576 1,212,689
Net operating loss (2,131,965) (1,154,857)
Other income:    
Less: interest expense 110,625  
Interest income 52,459 28,362
Income (loss) before income taxes (2,190,131) (1,126,495)
Income tax expense
Net loss (2,190,131) (1,126,495)
Less net loss attributable to non-controlling interests
Net loss attributable to MDB Capital Holdings, LLC (2,190,131) (1,126,495)
Technology Development [Member]    
Operating income:    
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)
Other operating income 59,159
Total operating income (loss), net 59,159
General and administrative costs:    
Compensation 390,043 31,536
Operating expense, related party
Professional fees 256,563 181,707
Information technology 3,891 9,826
Clearing and other charges
General and administrative-other 80,378 45,734
Total general and administrative costs 730,875 268,803
Research and development costs 277,582 31,592
Total operating costs 1,008,457 300,395
Net operating loss (1,008,457) (241,236)
Other income:    
Less: interest expense  
Interest income 86
Income (loss) before income taxes (1,008,457) (241,150)
Income tax expense
Net loss (1,008,457) (241,150)
Less net loss attributable to non-controlling interests (393,903) (94,193)
Net loss attributable to MDB Capital Holdings, LLC (614,554) (146,957)
Other [Member]    
Operating income:    
Unrealized gain on investment securities, net (from our licensed broker dealer) (Notes 1 and 2)
Other operating income
Total operating income (loss), net
General and administrative costs:    
Compensation 3,822,725 293,690
Operating expense, related party 76,416 43,249
Professional fees 516,619 257,143
Information technology 21,186 15,705
Clearing and other charges
General and administrative-other 369,812 149,352
Total general and administrative costs 4,806,758 759,139
Research and development costs
Total operating costs 4,806,758 759,139
Net operating loss (4,806,758) (759,139)
Other income:    
Less: interest expense  
Interest income 285,393 158,843
Income (loss) before income taxes (4,521,365) (600,296)
Income tax expense
Net loss (4,521,365) (600,296)
Less net loss attributable to non-controlling interests
Net loss attributable to MDB Capital Holdings, LLC (4,521,365) $ (600,296)
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 (loss), 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 loss  
Other income:    
Less: interest expense 110,625  
Interest income  
Income (loss) before income taxes 110,625  
Income tax expense  
Net loss 110,625  
Less net loss attributable to non-controlling interests  
Net loss attributable to MDB Capital Holdings, LLC $ 110,625