v3.26.3
Cover - shares
 3 Months Ended
Mar. 31, 2026
Oct. 02, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Entity Registrant Name US NUCLEAR CORP.  
Entity Central Index Key 0001543623  
Entity File Number 000-54617  
Entity Tax Identification Number 45-4535739  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status No  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Address, Address Line One 7051 Eton Avenue  
Entity Address, City or Town Canoga Park  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 91303  
City Area Code (818)  
Local Phone Number 883-7043  
Title of 12(b) Security Common  
Trading Symbol UCLE  
Security Exchange Name NONE  
Entity Common Stock, Shares Outstanding   62,822,263