v3.26.1
PROPERTY AND EQUIPMENT - Movement in property and equipment (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period $ 3,016 $ 2,898
Additions 1,309 867
Disposals (35) (28)
Depreciation charge for the year (578) (529)
Divestment and reclassification as held for sale (97) (81)
Impairment (12) (6)
Impairment reversal 3 3
Transfers (3) (22)
Modifications and reassessments 127 103
Translation adjustment 27 (189)
Property, plant and equipment including right-of-use assets at end of period 3,757 3,016
Cost    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 7,529  
Accumulated depreciation and impairment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period (3,772)  
Right-of-use assets    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 861 821
Additions 540 181
Disposals (28) (12)
Depreciation charge for the year (193) (155)
Divestment and reclassification as held for sale (29) (7)
Impairment (1) (1)
Impairment reversal 1 1
Transfers (1) (10)
Modifications and reassessments 127 103
Translation adjustment 7 (60)
Property, plant and equipment including right-of-use assets at end of period 1,284 861
Right-of-use assets | Cost    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 1,852  
Right-of-use assets | Accumulated depreciation and impairment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period (568)  
Property and equipment | Telecommunication equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 1,714 1,688
Additions 68 82
Disposals (5) (11)
Depreciation charge for the year (340) (335)
Divestment and reclassification as held for sale (60) (44)
Impairment (8) (3)
Impairment reversal 0 1
Transfers 550 433
Modifications and reassessments 0 0
Translation adjustment 6 (97)
Property, plant and equipment including right-of-use assets at end of period 1,925 1,714
Property and equipment | Land, buildings and constructions    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 72 61
Additions 5 3
Disposals 0 0
Depreciation charge for the year (9) (8)
Divestment and reclassification as held for sale 0 0
Impairment 0 0
Impairment reversal 0 0
Transfers 41 22
Modifications and reassessments 0 0
Translation adjustment 3 (6)
Property, plant and equipment including right-of-use assets at end of period 112 72
Property and equipment | Office and other equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 102 102
Additions 41 29
Disposals 0 (5)
Depreciation charge for the year (36) (31)
Divestment and reclassification as held for sale (1) (9)
Impairment 0 0
Impairment reversal 0 0
Transfers 32 26
Modifications and reassessments 0 0
Translation adjustment 4 (10)
Property, plant and equipment including right-of-use assets at end of period 142 102
Property and equipment | Equipment not installed and assets under construction    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 267 226
Additions 655 572
Disposals (2)  
Depreciation charge for the year 0 0
Divestment and reclassification as held for sale (7) (21)
Impairment (3) (2)
Impairment reversal 2 1
Transfers (625) (493)
Modifications and reassessments 0 0
Translation adjustment 7 (16)
Property, plant and equipment including right-of-use assets at end of period 294 267
Property and equipment | Equipment not installed and assets under construction, netting    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Disposals   $ 0
Property and equipment | Cost | Telecommunication equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 4,741  
Property and equipment | Cost | Land, buildings and constructions    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 210  
Property and equipment | Cost | Office and other equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 422  
Property and equipment | Cost | Equipment not installed and assets under construction    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period 304  
Property and equipment | Accumulated depreciation and impairment | Telecommunication equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period (2,816)  
Property and equipment | Accumulated depreciation and impairment | Land, buildings and constructions    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period (98)  
Property and equipment | Accumulated depreciation and impairment | Office and other equipment    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period (280)  
Property and equipment | Accumulated depreciation and impairment | Equipment not installed and assets under construction    
Disclosure of reconciliation of changes in property, plant and equipment, including right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at end of period $ (10)