Risks and Liquidity	3 Months Ended
Mar. 31, 2026
Risks and Uncertainties [Abstract]
Risks and Liquidity	Risks and Liquidity Going Concern, Liquidity and Capital Resources MoonLake is subject to risks common to companies in the biopharmaceutical industry, and the Company believes that changes in any of the following areas could have a material adverse effect on the Company's future financial position or results of operations: ability to obtain future financing, regulatory approval and market acceptance of, and reimbursement for, product candidates, performance of third-party contract research organizations and manufacturers upon which the Company relies, protection of the Company's intellectual property, litigation or claims against the Company based on intellectual property, patent, product, regulatory, clinical or other factors, and the Company's ability to attract and retain employees necessary to support its growth. The Company is dependent on third-party manufacturers to supply products for research and development activities in its programs and for eventual commercialization. In particular, the Company relies and expects to continue to rely on a small number of manufacturers to supply the Company with its requirements for the active pharmaceutical ingredients and formulated drugs related to these programs. These programs could be adversely affected by a significant interruption in the supply of active pharmaceutical ingredients and formulated drugs. The Company's ability to generate revenue sufficient to achieve profitability will depend on the successful development and eventual commercialization of SLK in one or more indications, which is expected to take a number of years. The Company expects to continue to incur substantial expenses and operating losses for at least the next two years as the Company continues the development of SLK and prepares for commercial launches. It is expected that operating losses will fluctuate notably from year to year depending on the timing of the Company's planned clinical development programs, efforts to achieve regulatory approval, and planned marketing and sales expenditures leading up to a commercial launch. The Company incurred a loss of $69.7 million for the three months ended March 31, 2026. As of March 31, 2026, the Company’s current assets exceeded its current liabilities by $350.5 million. As of March 31, 2026, the Company had $357.9 million of cash and cash equivalents and short-term marketable debt securities. Based on the Company's current operating plan and proceeds received from the issuance of Class A Ordinary Shares under the Sales Agreement (as defined below) subsequent to the reporting period, management believes that the Company has sufficient capital to fund its operations and capital expenditures to the end of 2027.

MoonLake is subject to risks common to companies in the biopharmaceutical industry, and the Company believes that changes in any of the following areas could have a material adverse effect on the Company's future financial position or results of operations: ability to obtain future financing, regulatory approval and market acceptance of, and reimbursement for, product candidates, performance of third-party contract research organizations and manufacturers upon which the Company relies, protection of the Company's intellectual property, litigation or claims against the Company based on intellectual property, patent, product, regulatory, clinical or other factors, and the Company's ability to attract and retain employees necessary to support its growth.

The Company is dependent on third-party manufacturers to supply products for research and development activities in its programs and for eventual commercialization. In particular, the Company relies and expects to continue to rely on a small number of manufacturers to supply the Company with its requirements for the active pharmaceutical ingredients and formulated drugs related to these programs. These programs could be adversely affected by a significant interruption in the supply of active pharmaceutical ingredients and formulated drugs.

The Company's ability to generate revenue sufficient to achieve profitability will depend on the successful development and eventual commercialization of SLK in one or more indications, which is expected to take a number of years. The Company expects to continue to incur substantial expenses and operating losses for at least the next two years as the Company continues the development of SLK and prepares for commercial launches. It is expected that operating losses will fluctuate notably from year to year depending on the timing of the Company's planned clinical development programs, efforts to achieve regulatory approval, and planned marketing and sales expenditures leading up to a commercial launch.

The Company incurred a loss of $69.7 million for the three months ended March 31, 2026. As of March 31, 2026, the Company’s current assets exceeded its current liabilities by $350.5 million.