v3.26.1
INTANGIBLE ASSETS - Schedule of total gross carrying value and accumulated amortization of intangible assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period $ 283 [1] $ 257
Acquisitions 58  
Additions 91 94
Disposals (1) (1)
Amortization charge for the year (65) (45)
Transfer and reclassification (1) 3
Translation adjustment (2) (25)
Intangible assets excl. goodwill at end of period 363 283 [1]
Telecommuni-cation licenses, frequencies & permissions    
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period 126 116
Acquisitions 0  
Additions 1 35
Disposals 0 0
Amortization charge for the year (17) (14)
Transfer and reclassification 0 0
Translation adjustment (1) (11)
Intangible assets excl. goodwill at end of period 109 126
Software    
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period 135 114
Acquisitions 8  
Additions 82 9
Disposals (1) (1)
Amortization charge for the year (42) (26)
Transfer and reclassification 6 51
Translation adjustment (1) (12)
Intangible assets excl. goodwill at end of period 187 135
Brands and trademarks    
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period 1 4
Acquisitions 18  
Additions 0 0
Disposals 0 0
Amortization charge for the year (2) (2)
Transfer and reclassification 0 0
Translation adjustment 0 (1)
Intangible assets excl. goodwill at end of period 17 1
Customer relationships    
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period 21 23
Acquisitions 32  
Additions 0 0
Disposals 0 0
Amortization charge for the year (4) (3)
Transfer and reclassification 0 2
Translation adjustment 0 (1)
Intangible assets excl. goodwill at end of period 49 21
Other intangible assets    
Intangible assets other than goodwill [abstract]    
Intangible assets excl. goodwill at beginning of period 0 0
Acquisitions 0  
Additions 8 50
Disposals 0 0
Amortization charge for the year 0 0
Transfer and reclassification (7) (50)
Translation adjustment 0 0
Intangible assets excl. goodwill at end of period $ 1 $ 0
[1]
*Prior period comparatives have been reclassified to conform with the current period presentation