v3.26.1
Cover - shares
3 Months Ended
May 31, 2026
Jul. 15, 2026
Document Information Line Items    
Entity Registrant Name Plutonian Acquisition Corp II  
Entity Central Index Key 0002065661  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --02-28  
Entity Small Business true  
Entity Shell Company true  
Entity Emerging Growth Company true  
Entity Current Reporting Status Yes  
Document Period End Date May 31, 2026  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2027  
Entity Ex Transition Period false  
Entity Common Stock Shares Outstanding   14,071,337
Entity File Number 0-43429  
Entity Incorporation State Country Code E9  
Entity Address Address Line 1 1216 Broadway  
Entity Address City Or Town New York  
Entity Address State Or Province NY  
Entity Address Postal Zip Code 10001  
City Area Code 646  
Local Phone Number 886-8892  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Units, each consisting of one Class A ordinary share [Member]    
Document Information Line Items    
Security 12b Title Units, each consisting of one Class A ordinary share, par value $0.0001 per share, and right  
Trading Symbol PLUNU  
Security Exchange Name NYSE  
Class A Ordinary Share [Member]    
Document Information Line Items    
Security 12b Title Class A ordinary shares, par value $0.0001 per share  
Trading Symbol PLUN  
Security Exchange Name NYSE  
Rights [Member]    
Document Information Line Items    
Security 12b Title Rights, with each right entitling the holder to receive one-fourth of one Class A ordinary share upon completion of an initial business combination  
Trading Symbol PLUNR  
Security Exchange Name NYSE