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Share-based Compensation - Narrative (Details)
10 Months Ended 12 Months Ended
Apr. 06, 2022
shares
Apr. 05, 2022
shares
Apr. 28, 2021
SFr / shares
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Apr. 28, 2021
$ / shares
shares
Mar. 09, 2021
shares
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 Common Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common shares issuable (in shares)         14,596    
Common Shares, shares outstanding (in shares)       12,161,331     33,638,698
Equity Incentive Plan              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Share-based compensation expense | $       $ 0 $ 364,381    
Weighted average period of recognition         2 years 3 months 7 days    
Expiration period   10 years          
Estimated fair value of the option on the grant date using Black-Scholes model (in shares) 180,000       180,000    
Unrecognized compensation expense | $         $ 1,100,000    
Equity Incentive Plan | Share-Based Payment Arrangement, Tranche One              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage 33.33%            
Equity Incentive Plan | Share-Based Payment Arrangement, Tranche Two              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage 33.33%            
Equity Incentive Plan | Share-Based Payment Arrangement, Tranche Three              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage 33.33%            
Employee Stock Option Plan (ESOP)              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Unrecognized compensation expense, options | $         1,800,000    
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    
Unrecognized share-based compensation expense, non-option awards | $         1,600,000    
Monthly SBP expense | $         403,361    
ESPP              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Share-based compensation expense | $       148,835 3,910,076    
Unrecognized share-based compensation expense, non-option awards | $         $ 9,500,000    
Vesting period after occurrence of change of control         12 months    
Weighted average period of recognition         1 year 9 months 7 days    
ESPP | Share-Based Payment Arrangement, Tranche One              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
ESPP | Share-Based Payment Arrangement, Tranche Two              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
ESPP | Share-Based Payment Arrangement, Tranche Three              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
ESPP | Share-Based Payment Arrangement, Tranche Four              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
ESPP | Employee Stock Option Plan (ESOP)              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Weighted average period of recognition         2 years 7 months 20 days    
Research and development services              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Share-based compensation expense | $       $ 66,982 $ 539,713    
Research and development services | Employee Stock Option Plan (ESOP)              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting period after occurrence of change of control         12 months    
Estimated fair value of the option on the grant date using Black-Scholes model (in shares)       224,033 242,736    
Research and development services | Employee Stock Option Plan (ESOP) | Share-Based Payment Arrangement, Tranche One              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
Research and development services | Employee Stock Option Plan (ESOP) | Share-Based Payment Arrangement, Tranche Two              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
Research and development services | Employee Stock Option Plan (ESOP) | Share-Based Payment Arrangement, Tranche Three              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
Research and development services | Employee Stock Option Plan (ESOP) | Share-Based Payment Arrangement, Tranche Four              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Vesting percentage         25.00%    
Option and employee stock | Treasury Stock              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common shares issuable (in shares)         22,756    
Class C Ordinary Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)         13,723,511    
Common shares, par value (USD per share) | $ / shares         $ 0.0001    
Class C Ordinary Shares | MoonLake AG Common Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common shares issuable (in shares)         490,990    
Common Shares, shares outstanding (in shares)         13,723,511    
Common shares, par value (USD per share) | $ / shares         $ 0.0001    
Class C Ordinary Shares | Option and employee stock | Treasury Stock              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common shares issuable (in shares)         765,482    
Class A Ordinary Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)         38,977,600    
Common shares, par value (USD per share) | $ / shares         $ 0.0001 $ 0.0001  
Class A Ordinary Shares | MoonLake AG Common Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)         38,977,600    
Common shares, par value (USD per share) | $ / shares         $ 0.0001    
MoonLake AG              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Reverse vesting percentage     90.00%     90.00%  
Common Shares, shares outstanding (in shares)     110,000     110,000  
MoonLake AG | MoonLake AG Restricted Founder Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)     99,000     99,000  
Vesting percentage     4.166%        
Vesting period     2 years        
Nominal value (CHF per share) | SFr / shares     SFr 0.10        
MoonLake AG | Class C Ordinary Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)     3,700,257     3,700,257  
MoonLake AG | Class C Ordinary Shares | MoonLake AG Restricted Founder Shares              
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]              
Common Shares, shares outstanding (in shares)     3,330,231     3,330,231