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Share-based Compensation - Share-based Compensation Expense By Plan (Details) - USD ($)
10 Months Ended 12 Months Ended
Apr. 28, 2021
Dec. 31, 2021
Dec. 31, 2022
Apr. 05, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   $ 9,052,909 $ 9,654,778  
Common Shares, shares outstanding (in shares)       52,701,111
MoonLake AG        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common Shares, shares outstanding (in shares) 110,000      
Merck KGaA Darmstadt in-licensing agreement        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Cash consideration $ 25,000,000      
Equity consideration 99,000      
Total payment $ 1      
Fair value of the equity consideration $ 4,851,000      
Class C Ordinary Shares        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common Shares, shares outstanding (in shares)     13,723,511  
Class C Ordinary Shares | MoonLake AG        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common Shares, shares outstanding (in shares) 3,700,257      
Research and Development Expense        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   72,183 $ 954,379  
General and Administrative Expense        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   8,980,726 8,700,399  
Equity Incentive Plan        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   0 364,381  
MoonLake AG Restricted Founder Shares        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   8,837,092 4,840,608  
MoonLake AG Restricted Founder Shares | MoonLake AG        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common Shares, shares outstanding (in shares) 99,000      
MoonLake AG Restricted Founder Shares | Class C Ordinary Shares | MoonLake AG        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Common Shares, shares outstanding (in shares) 3,330,231      
ESPP        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   148,835 3,910,076  
Research and development services        
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]        
Share-based compensation expense   $ 66,982 $ 539,713