v3.26.1
Cover
Apr. 29, 2026
Document Type 8-K
Amendment Flag false
Document Period End Date Apr. 29, 2026
Entity File Number 001-42822
Entity Registrant Name SPRING VALLEY ACQUISITION CORP. III
Entity Central Index Key 0002074850
Entity Tax Identification Number 00-0000000
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One 4030 Maple Avenue
Entity Address, Address Line Two Suite 500
Entity Address, City or Town Dallas
Entity Address, State or Province TX
Entity Address, Postal Zip Code 75219
City Area Code 214
Local Phone Number 308-5230
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false
Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant  
Title of 12(b) Security Units, each consisting of one Class A ordinary share and one-third of one redeemable public warrant
Trading Symbol SVACU
Security Exchange Name NASDAQ
Common Class A [Member]  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share
Trading Symbol SVAC
Security Exchange Name NASDAQ
Warrant [Member]  
Title of 12(b) Security Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50
Trading Symbol SVACW
Security Exchange Name NASDAQ