v3.26.1
PROPERTY AND EQUIPMENT - Schedule Of Quantitative Information About Right-Of-Use Assets (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of quantitative information about right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period $ 624 [1] $ 597
Additions 292 184
Modifications and reassessments 92 53
Disposals (4) (4)
Depreciation charge for the year (140) (118)
Impairment (9) (4)
Translation adjustment (7) (60)
Property, plant and equipment including right-of-use assets at end of period 849 624 [1]
Right-of-use assets    
Disclosure of quantitative information about right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 238 235
Additions 29 22
Modifications and reassessments 92 53
Disposals (3) (3)
Depreciation charge for the year (53) (45)
Impairment (1) 0
Translation adjustment (2) (24)
Property, plant and equipment including right-of-use assets at end of period 300 238
Telecomm-unications equipment | Right-of-use assets    
Disclosure of quantitative information about right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 229 225
Additions 25 18
Modifications and reassessments 88 53
Disposals (3) (3)
Depreciation charge for the year (49) (41)
Impairment (1)  
Translation adjustment (2) (23)
Property, plant and equipment including right-of-use assets at end of period 287 229
Land, buildings and constructions | Right-of-use assets    
Disclosure of quantitative information about right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 5 7
Additions 1 1
Modifications and reassessments 4 0
Disposals 0 0
Depreciation charge for the year (2) (2)
Impairment 0  
Translation adjustment 0 (1)
Property, plant and equipment including right-of-use assets at end of period 8 5
Office and other equipment | Right-of-use assets    
Disclosure of quantitative information about right-of-use assets [line items]    
Property, plant and equipment including right-of-use assets at beginning of period 4 3
Additions 3 3
Modifications and reassessments 0 0
Disposals 0 0
Depreciation charge for the year (2) (2)
Impairment 0  
Translation adjustment 0 0
Property, plant and equipment including right-of-use assets at end of period $ 5 $ 4
[1]
*Prior period comparatives have been reclassified to conform with the current period presentation