v3.26.1
FAIR VALUE MEASUREMENTS - Asset held in the Trust Account (Details) - Spring Valley Acquisition III - USD ($)
Jun. 30, 2026
Dec. 31, 2025
FAIR VALUE MEASUREMENTS    
Assets held in the Trust Account $ 236,690,350 $ 232,809,646
Recurring    
FAIR VALUE MEASUREMENTS    
Assets held in the Trust Account   232,809,646
Recurring | Level 1    
FAIR VALUE MEASUREMENTS    
Investments held in Trust Account - U.S. Treasury Securities Money Market Fund 236,690,350 $ 232,809,646
Recurring | Level 3    
FAIR VALUE MEASUREMENTS    
Subscription agreement liability $ 21,975,641