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Share-based Compensation - Narrative (Details)
12 Months Ended
Apr. 05, 2022
installment
shares
Apr. 28, 2021
$ / shares
shares
Dec. 31, 2023
USD ($)
co-founder
$ / shares
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Dec. 31, 2021
shares
Apr. 28, 2021
SFr / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Share-based compensation expense | $     $ 7,106,005 $ 9,654,778    
Common shares, shares outstanding (in shares) 52,701,111          
Number of co-founders | co-founder     3      
Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Unrecognized compensation expense, options | $     $ 4,200,000      
Equity Incentive Plan            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Share-based compensation expense | $     $ 1,204,952 364,381    
Weighted average period of recognition     1 year 9 months      
Expiration period 10 years          
Unrecognized compensation expense | $     $ 3,300,000      
Share-Based Payment Arrangement, Tranche Three | Equity Incentive Plan | Share-Based Payment Arrangement, Employee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
Share-Based Payment Arrangement, Tranche Four | Equity Incentive Plan | Share-Based Payment Arrangement, Employee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
Share-Based Payment Arrangement, Tranche Two | Equity Incentive Plan | Share-Based Payment Arrangement, Nonemployee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting period 12 months          
Share-Based Payment Arrangement, Tranche Two | Equity Incentive Plan | Share-Based Payment Arrangement, Employee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
Share-Based Payment Arrangement, Tranche One | Equity Incentive Plan | Share-Based Payment Arrangement, Nonemployee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting period 3 years          
Share-based compensation arrangement by share-based payment award, number of vesting installments | installment 3          
Share-Based Payment Arrangement, Tranche One | Equity Incentive Plan | Share-Based Payment Arrangement, Employee            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
MoonLake AG Restricted Founder Shares            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Share-based compensation expense | $     $ 1,574,300 4,840,608    
ESPP            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Share-based compensation expense | $     3,352,885 3,910,076    
Unrecognized share-based compensation expense, non-option awards | $     $ 6,200,000      
Weighted average period of recognition     2 years 18 days      
ESPP | Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Weighted average period of recognition     2 years 5 months 12 days      
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 | 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 One            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
ESOP            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Share-based compensation expense | $     $ 973,868 $ 539,713    
ESOP | Share-Based Payment Arrangement, Tranche Three | Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
ESOP | Share-Based Payment Arrangement, Tranche Four | Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
ESOP | Share-Based Payment Arrangement, Tranche Two | Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
ESOP | Share-Based Payment Arrangement, Tranche One | Employee Stock Option Plan (ESOP)            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Vesting percentage     25.00%      
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
Common Class C            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares, shares outstanding (in shares)     2,505,476 13,723,511    
Common shares, par value (USD per share) | $ / shares     $ 0.0001 $ 0.0001    
Common Class C | MoonLake AG            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares, shares outstanding (in shares)   3,700,257       3,700,257
Common Class C | MoonLake AG | 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
Common Class A            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares, shares outstanding (in shares)     60,466,453 38,977,600    
Common shares, par value (USD per share) | $ / shares   $ 0.0001 $ 0.0001 $ 0.0001    
Common Stock            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares issuable (in shares)     11,079      
Common shares, shares outstanding (in shares)         12,161,331  
Common Stock | Common Class C            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares issuable (in shares)     372,683      
Common shares, shares outstanding (in shares)     2,505,476 13,723,511    
Common shares, par value (USD per share) | $ / shares     $ 0.0001      
Common Stock | Common Class A            
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]            
Common shares, shares outstanding (in shares)     60,466,453 38,977,600    
Common shares, par value (USD per share) | $ / shares     $ 0.0001