XML 12 R1.htm IDEA: XBRL DOCUMENT v3.22.0.1
Document and Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Feb. 22, 2022
Jun. 30, 2021
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Registrant Name SUPERNOVA PARTNERS ACQUISITION COMPANY II, LTD.    
Entity Central Index Key 0001838359    
Current Fiscal Year End Date --12-31    
Document Annual Report true    
Document Transition Report false    
Entity File Number 001-40140    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 98-1574543    
Entity Address, Address Line One 4301 50th Street NW    
Entity Address, Address Line Two Suite 300 PMB 1044    
Entity Address, City or Town Washington    
Entity Address, State or Province DC    
Entity Address Postal Zip Code 20016    
City Area Code 202    
Local Phone Number 918-7050    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
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    
ICFR Auditor Attestation Flag false    
Entity Shell Company true    
Entity Public Float     $ 335.0
Auditor Name Marcum llp    
Auditor Location New York, NY    
Auditor Firm ID 688    
Class A Ordinary Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   34,500,000  
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share    
Trading Symbol SNII    
Security Exchange Name NYSE    
Class B Ordinary Shares      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   8,625,000  
Units      
Document Information [Line Items]      
Title of 12(b) Security Units, each consisting of one Class A ordinary share,$0.0001 par value, and one-fourth of one redeemable warrant topurchase one Class A ordinary share    
Trading Symbol SNII.U    
Security Exchange Name NYSE    
Warrants      
Document Information [Line Items]      
Title of 12(b) Security Warrants, each whole exercisable for one Class A ordinary share at an exercise price of $11.50 per share    
Trading Symbol SNII WS    
Security Exchange Name NYSE