v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 14, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Amendment Flag false  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name INFINITE EAGLE ACQUISITION CORP.  
Entity Central Index Key 0002084396  
Entity Incorporation, State or Country Code E9  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
City Area Code (310)  
Local Phone Number 209-7280  
Document Period End Date Jun. 30, 2026  
Entity Shell Company true  
Entity Interactive Data Current Yes  
Entity Current Reporting Status Yes  
Entity File Number 001-42385  
Entity Address, Address Line One 955 Fifth Avenue  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10075  
Entity Tax Identification Number 00-0000000  
Class A Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   34,895,000
Class B Ordinary Shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   8,625,000
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one right to receive one twenty-fifth (1/25) of a Class A ordinary share    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one right to receive one twenty-fifth (1/25) of a Class A ordinary share  
Trading Symbol IEAGU  
Security Exchange Name NASDAQ  
Class A ordinary shares, 0.0001 par value    
Document Information [Line Items]    
Title of 12(b) Security Class A ordinary shares, 0.0001 par value  
Trading Symbol IEAG  
Security Exchange Name NASDAQ  
Rights, each entitling the holder to receive one twenty-fifth (1/25) of one Class A ordinary share    
Document Information [Line Items]    
Title of 12(b) Security Rights, each entitling the holder to receive one twenty-fifth (1/25) of one Class A ordinary share  
Trading Symbol IEAGR  
Security Exchange Name NASDAQ