v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
May 08, 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 Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
Entity Registrant Name INDIGO ACQUISITION CORP.  
Entity Central Index Key 0002063816  
Entity File Number 001-42721  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Entity Address, Address Line One 3250 Mary Street  
Local Phone Number 438-7700  
Entity Address, Address Line Two Suite 410  
Entity Address, City or Town Miami  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33133  
City Area Code (305)  
Entity Current Reporting Status Yes  
Entity Shell Company true  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   14,755,000
Units, each consisting of one ordinary share and one right    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one ordinary share and one right  
Trading Symbol INACU  
Security Exchange Name NASDAQ  
Ordinary Shares, par value $0.0001 per share    
Document Information [Line Items]    
Title of 12(b) Security Ordinary Shares, par value $0.0001 per share  
Trading Symbol INAC  
Security Exchange Name NASDAQ  
Rights, each entitling the holder to one tenth of one ordinary share upon the completion of the Company’s initial business combination    
Document Information [Line Items]    
Title of 12(b) Security Rights, each entitling the holder to one tenth of one ordinary share upon the completion of the Company’s initial business combination  
Trading Symbol INACR  
Security Exchange Name NASDAQ