v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 20, 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 Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name APOGEE ACQUISITION CORP  
Entity Central Index Key 0002102123  
Entity File Number 001-43226  
Entity Tax Identification Number 00-0000000  
Entity Incorporation, State or Country Code E9  
Current Fiscal Year End Date --12-31  
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 Address, Address Line One 2106 House Ave Suite 375  
Entity Address, State or Province WY  
Entity Address, Postal Zip Code 82001  
Entity Address, City or Town Cheyenne  
Local Phone Number 854-0515  
City Area Code (202)  
Class A Ordinary Shares    
Document Information [Line Items]    
Entity common stock shares outstanding   17,720,000
Class B Ordinary Shares    
Document Information [Line Items]    
Entity common stock shares outstanding   5,750,000
Units, each consisting of one Class A ordinary share, one redeemable warrant, and one Right to acquire one-fifth (1/5) of one Class A Ordinary Share    
Document Information [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share, one redeemable warrant, and one right to acquire one-fifth (1/5) of one Class A Ordinary Share  
Trading Symbol AACPU  
Security Exchange Name NASDAQ  
Class A ordinary shares, par value $0.0001 per share    
Document Information [Line Items]    
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share  
Trading Symbol AACP  
Security Exchange Name NASDAQ  
Warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50    
Document Information [Line Items]    
Title of 12(b) Security Warrants, each warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Trading Symbol AACPW  
Security Exchange Name NASDAQ  
Rights, each Right to acquire one-fifth (1/5) of one Class A Ordinary Share    
Document Information [Line Items]    
Title of 12(b) Security Rights, each right to acquire one-fifth (1/5) of one Class A Ordinary Share  
Trading Symbol AACPR  
Security Exchange Name NASDAQ