XML 12 R1.htm IDEA: XBRL DOCUMENT v3.21.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2021
May 21, 2021
Document Information [Line Items]    
Document Type 10-Q  
Document Period End Date Mar. 31, 2021  
Document Quarterly Report true  
Transition Report false  
Entity Registrant Name SPRING VALLEY ACQUISITION CORP.  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company true  
Entity Central Index Key 0001822966  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   23,000,000
Trading Symbol SV  
Title of 12(b) Security Class A ordinary shares included as part of the units  
Security Exchange Name NASDAQ  
Class B ordinary shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,750,000
Units, each consisting of one share of Class A ordinary share and one-half of one redeemable warrant    
Document Information [Line Items]    
Trading Symbol SVSVU  
Title of 12(b) Security Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant  
Security Exchange Name NASDAQ  
Redeemable warrants, each whole warrant exercisable    
Document Information [Line Items]    
Trading Symbol SVSVW  
Title of 12(b) Security Warrants included as part of the units, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50  
Security Exchange Name NASDAQ