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Shareholders’ Equity - Schedule of Stock Authorized and Issued (Details) - $ / shares
 3 Months Ended
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Dec. 31, 2023
Common Shares          
Issuance of shares under the ATM facility (in shares) 914,828        
Cancellation of Class C shares following an employee contract termination in MoonLake AG (in shares) 16,853        
Total Number of Ordinary Shares          
Authorized, beginning balance (in shares) 600,000,000        
Shares issued, beginning balance (in shares) 62,971,929        
Number of shares issued (in shares) 914,828        
Cancellation of Class C shares following an employee contract termination in MoonLake AG (in shares) 16,853        
Authorized, ending balance (in shares) 600,000,000        
Shares issued, ending balance (in shares) 63,869,904        
Common Class A          
Common Shares          
Authorized, beginning balance (in shares) 500,000,000        
Issued, beginning balance (in shares) 60,466,453        
Total Number of Ordinary Shares          
Common stock, par value (CHF/USD per share)       $ 0.0001 $ 0.0001
Common Class C          
Common Shares          
Authorized, beginning balance (in shares) 100,000,000        
Issued, beginning balance (in shares) 2,505,476        
Total Number of Ordinary Shares          
Common stock, par value (CHF/USD per share)       0.0001 $ 0.0001
Common Stock | Common Class A          
Common Shares          
Authorized, beginning balance (in shares) 500,000,000        
Issued, beginning balance (in shares) 60,466,453        
Conversion of Class C Ordinary Shares into Class A Ordinary Shares (in shares) 1,493,356 4,587,713 176,603    
Issuance of shares under the ATM facility (in shares) 914,828 9,744,894      
Authorized, ending balance (in shares) 500,000,000        
Issued, ending balance (in shares) 62,874,637        
Total Number of Ordinary Shares          
Number of shares issued (in shares) 914,828 9,744,894      
Common stock, par value (CHF/USD per share)       0.0001  
Common Stock | Common Class A | Conversion Of Class C into Class A          
Common Shares          
Conversion of Class C Ordinary Shares into Class A Ordinary Shares (in shares) 1,493,356        
Common Stock | Common Class C          
Common Shares          
Authorized, beginning balance (in shares) 100,000,000        
Issued, beginning balance (in shares) 2,505,476        
Conversion of Class C Ordinary Shares into Class A Ordinary Shares (in shares) (1,493,356) (4,587,713) (176,603)    
Cancellation of Class C shares following an employee contract termination in MoonLake AG (in shares) 16,853        
Authorized, ending balance (in shares) 100,000,000        
Issued, ending balance (in shares) 995,267        
Total Number of Ordinary Shares          
Cancellation of Class C shares following an employee contract termination in MoonLake AG (in shares) 16,853        
Common stock, par value (CHF/USD per share)       $ 0.0001  
Common Stock | Common Class C | Conversion Of Class C into Class A          
Common Shares          
Conversion of Class C Ordinary Shares into Class A Ordinary Shares (in shares) (1,493,356)