v3.26.1
Cover - shares
 3 Months Ended
Mar. 31, 2026
Jun. 26, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Registrant Name Iron Dome Acquisition I Corp.  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Entity Central Index Key 0002090441  
Entity File Number 001-43168  
Amendment Flag false  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 00-0000000  
Entity Address, Address Line One 244 Fifth Avenue, Suite #1814  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10001  
City Area Code (410)  
Local Phone Number 671-5481  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Units, Each Consisting Of One Class A Ordinary Share, $0.0001 Par Value, And One-Half Of One Redeemable Warrant    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant  
Trading Symbol IDACU  
Security Exchange Name NASDAQ  
Class A ordinary shares included as part of the units    
Document Information [Line Items]    
Title of 12(b) Security Class A ordinary shares included as part of the units  
Trading Symbol IDAC  
Security Exchange Name NASDAQ  
Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50    
Document Information [Line Items]    
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Trading Symbol IDACW  
Security Exchange Name NASDAQ  
Class A Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   15,900,000
Class B Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,816,667