v3.26.1
Consolidated companies as of December 31, 2025 (Details)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AboundBio, Inc. | United States      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos Biopharma BV | The Netherlands | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma BV | Belgium | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos B.V | The Netherlands      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos Biopharma Spain S.L.U | Spain | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma Italy S.r.l. | Italy | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma Germany GmbH | Germany | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma A.B. | Sweden | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma A.S. | Norway | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma Oy | Finland | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma ApS | Denmark | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos GmbH | Switzerland      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos GmbH | Austria | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biopharma Ireland Ltd | Ireland | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Biotech Ltd. (formerly Inpharmatica Ltd.) | United Kingdom | DISCONTINUED OPERATIONS      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 0.00% 100.00%
Galapagos Real Estate 1 BV | Belgium      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 0.00% 100.00% 100.00%
Changes in voting rights (100.00%)    
Galapagos Real Estate B.V. | The Netherlands      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos UK Limited [member] | United Kingdom      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 0.00%
Galapagos SASU (France) | France      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos, Inc. (formerly Biofocus, Inc.) | United States      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Xenometrix, Inc. | United States      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 100.00%
Galapagos Holding PTE LTD [member] | Singapore      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 100.00% 0.00%
Lakefront Biotherapeutics [member] | United States      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 0.00% 0.00%
Changes in voting rights 100.00%    
Galapagos Cell Therapeutics NV [member] | Belgium      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 0.00% 0.00%
Changes in voting rights 100.00%    
Galapagos Shanghai Bioscience Co LTD [member] | People's republic of China      
Consolidated companies as of December 31, 2022      
Percentage of voting rights held directly or indirectly through subsidiaries 100.00% 0.00% 0.00%
Changes in voting rights 100.00%