Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.21.2
Document and Entity Information - shares
 8 Months Ended
Sep. 30, 2021
Nov. 15, 2021
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2021  
Entity File Number 001-40266  
Entity Registrant Name MAGNUM OPUS ACQUISITION LIMITED  
Entity Incorporation, State or Country Code E9  
Entity Tax Identification Number 00-0000000  
Entity Address, Address Line One Unit 1009, ICBC Tower  
Entity Address, Address Line Two Three Garden Road  
Entity Address, City or Town Central  
Entity Address, Country HK  
City Area Code 852  
Local Phone Number 3757 9857  
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  
Entity Shell Company true  
Entity Central Index Key 0001843121  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Transition Report false  
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant    
Document Information [Line Items]    
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  
Trading Symbol OPA.U  
Security Exchange Name NYSE  
Class A ordinary shares    
Document Information [Line Items]    
Title of 12(b) Security Class A ordinary shares, $0.0001 par value  
Trading Symbol OPA  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   20,000,000
Redeemable warrants, each whole warrant exercisable for one share of Class A Common Stock at an exercise price of $11.50    
Document Information [Line Items]    
Title of 12(b) Security Redeemable warrants, each warrant exercisable for one Class A ordinary share, each at an exercise price of $11.50 per share  
Trading Symbol OPA WS  
Security Exchange Name NYSE  
Class B ordinary shares    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   5,000,000