v3.26.1
INVESTMENTS, DEBT AND DERIVATIVES - Investments and derivatives narrative (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of financial assets [line items]    
Financial assets at amortised cost $ 542 $ 595
Financial assets at fair value through other comprehensive income 38 38
ii) Other Borrowings | At amortized cost    
Disclosure of financial assets [line items]    
Other payables 77 94
Security deposits and cash collateral    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 139 159
Security deposits and cash collateral | Restricted bank deposits    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 32 27
Security deposits and cash collateral | Restricted cash    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 90 118
Deferred consideration from sale of subsidiary    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 138 250
Deferred consideration from sale of subsidiary | Sale and leaseback of Deodar    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 138 250
Other equity investments | Pakistan    
Disclosure of financial assets [line items]    
Financial assets at fair value through other comprehensive income 3 4
Other equity investments | Bangladesh    
Disclosure of financial assets [line items]    
Financial assets at fair value through other comprehensive income 34 34
Other investments    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 262 184
Other investments | Loan to related party | VIP Kazakhstan Holding AG    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 27 27
Other investments | Loan to related party | Kazakhstan Holding AG    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 27 27
Other investments | Sovereign bonds | Pakistan    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 15 33
Other investments | Short term loan | Pakistan    
Disclosure of financial assets [line items]    
Financial assets at amortised cost 153 94
Other investments | Short term loan | Ukraine    
Disclosure of financial assets [line items]    
Financial assets at amortised cost $ 40 $ 0