v3.26.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2026
Sep. 10, 2026
Document and Entity Information [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 333-289035  
Entity Registrant Name IWAC HOLDING COMPANY INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 33-2068817  
Entity Address, Address Line One 48 Wall Street, Level 11  
Entity Address, City or Town New York  
Entity Address State Or Province NY  
Entity Address, Postal Zip Code 10005  
City Area Code 917  
Local Phone Number 397-7625  
Entity Current Reporting Status No  
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  
Entity Common Stock, Shares Outstanding   1,000
Entity Central Index Key 0002033522  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false