v3.26.1
Cover - shares
 6 Months Ended
Jun. 30, 2026
Aug. 13, 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 Information [Line Items]    
Entity Registrant Name SILVER PEGASUS ACQUISITION CORP.  
Entity Central Index Key 0002028735  
Entity File Number 001-42743  
Entity Tax Identification Number 98-1795957  
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 Incorporation, Date of Incorporation Jun. 05, 2024  
Entity Contact Personnel [Line Items]    
Entity Address, Address Line One 2455 Augustine Dr  
Entity Address, Address Line Two STE 150  
Entity Address, City or Town Santa Clara  
Entity Address, Country CA  
Entity Address, Postal Zip Code 95054  
Entity Phone Fax Numbers [Line Items]    
City Area Code (408)  
Local Phone Number 734-6022  
Units, each consisting of one Class A ordinary share and one Right    
Entity Listings [Line Items]    
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one Right  
Trading Symbol SPEGU  
Security Exchange Name NASDAQ  
Class A ordinary share, par value $0.0001 per share    
Entity Listings [Line Items]    
Title of 12(b) Security Class A ordinary share, par value $0.0001 per share  
Trading Symbol SPEG  
Security Exchange Name NASDAQ  
Right - each right entitles the holder thereof to receive one-tenth (1/10) of one Class A ordinary share [Member]    
Entity Listings [Line Items]    
Title of 12(b) Security Right - each right entitles the holder thereof to receive one-tenth (1/10) of one Class A ordinary share  
Trading Symbol SPEGR  
Security Exchange Name NASDAQ  
Class A Ordinary Shares    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   11,500,000
Class B Ordinary Shares    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   3,833,333