Description of Business	6 Months Ended
Description of Business	Jun. 30, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business Amicus Therapeutics, Inc. (the "Company") is a global, patient-dedicated biotechnology company focused on discovering, developing, and delivering novel medicines for rare diseases. The Company has developed and commercialized the first oral monotherapy for Fabry disease that has achieved widespread global approval and the first two-component therapy for Pompe disease that has been approved in the European Union (“E.U.”) and the United Kingdom (“U.K.”), and is under regulatory review in the United States (“U.S.”). The Company is committed to discovering and developing next generation therapies in Fabry and Pompe diseases. The cornerstone of the Company's portfolio is Galafold® (also referred to as "migalastat"), the first and only approved oral precision medicine for people living with Fabry disease who have amenable genetic variants. Migalastat is currently approved under the trade name Galafold® in the U.S., E.U., U.K., and Japan, with multiple additional approvals granted and applications pending in several geographies around the world. Pombiliti™ and Opfolda™ (also referred to as AT-GAA, ATB200/AT2221, or cipaglucosidase alfa/miglustat), is a novel, two-component treatment for Pompe disease that was approved by the European Commission ("EC") in June 2023 and the U.K. Medicines and Healthcare products Regulatory Agency ("MHRA") in August 2023. The Company began launch activities for Pombiliti™ and Opfolda™ in Germany and will commence the reimbursement processes with healthcare authorities in other European countries. In October 2022, the U.S. Food and Drug Administration ("FDA") deferred action on the BLA for cipaglucosidase alfa, citing the inability to complete the manufacturing site inspection prior to the PDUFA action date. In the second quarter of 2023, the FDA completed the required pre-approval inspection of the manufacturing site and the review is ongoing. The Company continues to monitor the novel coronavirus (“COVID-19”) pandemic. The Company's commercial operations have not been significantly impacted by the COVID-19 pandemic and the Company continues to see a gradual improvement in patient identification and Galafold® initiation. The Company has been able to continue to meet required commercial demand for Galafold® as well as supply Pombiliti™ and Opfolda™ commercial launch inventory and its ongoing clinical studies and access programs without interruption. In regard to the Company's regulatory operations, the FDA deferred action on the pending BLA for cipaglucosidase alfa, as a site inspection could not be completed by the PDUFA action date due to COVID-19 related travel restrictions in China. In the second quarter of 2023, the FDA completed the required pre-approval inspection of the manufacturing site. Per FDA guidance relating to pre-approval inspections during the COVID-19 pandemic, receipt of a deferral action indicates no deficiencies have been identified and the application otherwise satisfies the requirements for approval. The Company had an accumulated deficit of $2.6 billion as of June 30, 2023 and anticipates incurring losses through the fiscal year ending December 31, 2023. The Company has historically funded its operations through stock offerings, Galafold® revenues, debt issuances, collaborations, and other financing arrangements. Based on its current operating model, the Company believes that the current cash position, which includes expected revenues, is sufficient to fund the Company's operations and ongoing research programs for at least the next 12 months. Potential impacts of the COVID-19 pandemic, business development collaborations, pipeline expansion, and investment in manufacturing capabilities could impact the Company's future capital requirements.