v3.26.1
ISSUED CAPITAL AND RESERVES - Major shareholders (Details) - shares
Dec. 31, 2025
Dec. 31, 2024
ISSUED CAPITAL AND RESERVES    
Free float percentage 31.80%  
Total percentage of common and voting shares 100.00%  
Common shares    
ISSUED CAPITAL AND RESERVES    
Free float (in shares) 587,918,517  
Outstanding shares (in shares) 1,849,190,667  
Issued shares, including shares held by a subsidiary of the company (in shares) 130,003,933 83,706,608
L1T VIP Holdings S.à r.l. (“LetterOne”)    
ISSUED CAPITAL AND RESERVES    
Percentage of common and voting shares 45.50%  
L1T VIP Holdings S.à r.l. (“LetterOne”) | Common shares    
ISSUED CAPITAL AND RESERVES    
Total outstanding common shares (in shares) 840,625,000  
Stichting Administratiekantoor Mobile Telecommunications Investor    
ISSUED CAPITAL AND RESERVES    
Percentage of common and voting shares 7.90%  
Stichting Administratiekantoor Mobile Telecommunications Investor | Common shares    
ISSUED CAPITAL AND RESERVES    
Total outstanding common shares (in shares) 145,947,550  
Lingotto Investment Management LLP    
ISSUED CAPITAL AND RESERVES    
Percentage of common and voting shares 8.20%  
Lingotto Investment Management LLP | Common shares    
ISSUED CAPITAL AND RESERVES    
Total outstanding common shares (in shares) 151,102,350  
Shah Capital Management Inc.    
ISSUED CAPITAL AND RESERVES    
Percentage of common and voting shares 6.70%  
Shah Capital Management Inc. | Common shares    
ISSUED CAPITAL AND RESERVES    
Total outstanding common shares (in shares) 123,597,250