v3.26.1
Cover - USD ($)
 12 Months Ended
Dec. 31, 2025
Mar. 31, 2026
Jun. 30, 2025
Document Information Line Items      
Entity Registrant Name CLASSOVER HOLDINGS, INC.    
Entity Central Index Key 0002022308    
Document Type 10-K    
Amendment Flag false    
Entity Voluntary Filers No    
Current Fiscal Year End Date --12-31    
Entity Well Known Seasoned Issuer No    
Entity Small Business true    
Entity Shell Company false    
Entity Emerging Growth Company true    
Entity Current Reporting Status Yes    
Document Period End Date Dec. 31, 2025    
Entity Filer Category Non-accelerated Filer    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2025    
Entity Ex Transition Period false    
Entity Common Stock Shares Outstanding   1,174,718  
Entity Public Float     $ 3,332,736
Document Annual Report true    
Document Transition Report false    
Document Fin Stmt Error Correction Flag false    
Entity File Number 001-42588    
Entity Incorporation State Country Code NV    
Entity Tax Identification Number 99-2827182    
Entity Address Address Line 1 450 7th Avenue    
Entity Address Address Line 2 Suite 905    
Entity Address City Or Town New York    
Entity Address State Or Province NY    
Entity Address Postal Zip Code 10123    
City Area Code 800    
Icfr Auditor Attestation Flag false    
Local Phone Number 345-9588    
Entity Interactive Data Current Yes    
Auditor Firm Id 6797    
Auditor Name Bush & Associates CPA LLC    
Auditor Location Las Vegas, Nevada    
Class B Ordinary shares      
Document Information Line Items      
Security 12b Title Class B Common Stock, par value $0.0001 per share    
Trading Symbol KIDZ    
Security Exchange Name NASDAQ    
Redeemable warrants [Member]      
Document Information Line Items      
Security 12b Title Redeemable warrants, each whole warrant exercisable for one share of Class B Common Stock, each at an exercise price of $575.00 per share    
Trading Symbol KIDZW    
Security Exchange Name NASDAQ