Annual report pursuant to Section 13 and 15(d)

Document and Entity Information

v3.22.1
Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2021
Mar. 31, 2022
Jun. 30, 2021
Entity Listings [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Document Transition Report false    
Entity Registrant Name Ross Acquisition Corp II    
Entity File Number 001-40201    
Entity Central Index Key 0001841610    
Entity Incorporation, State or Country Code E9    
Entity Tax Identification Number 98-1578557    
Entity Address, Address Line One 1 Pelican Lane    
Entity Address, City or Town Palm Beach    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33480    
City Area Code 561    
Local Phone Number 655-2615    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag false    
Entity Shell Company true    
Entity Public Float     $ 333,615,000
Auditor Firm ID 100    
Auditor Name WithumSmith+Brown, PC    
Auditor Location New York, New York    
Units [Member]      
Entity Listings [Line Items]      
Title of 12(b) Security Units, each consisting of one share of Class A ordinary shares, $0.0001 par value, and one-third of one redeemable warrant    
Trading Symbol ROSS.U    
Security Exchange Name NYSE    
Class A Ordinary Shares [Member]      
Entity Listings [Line Items]      
Title of 12(b) Security Class A ordinary shares, par value $0.0001 per share    
Trading Symbol ROSS    
Security Exchange Name NYSE    
Entity Common Stock, Shares Outstanding   34,500,000  
Redeemable Warrants [Member]      
Entity Listings [Line Items]      
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for1shareofClassAordinaryshareatanexercisepriceof$11.50pershare    
Trading Symbol ROSS WS    
Security Exchange Name NYSE    
Class B Ordinary Shares [Member]      
Entity Listings [Line Items]      
Entity Common Stock, Shares Outstanding   8,625,000