XML 89 R68.htm IDEA: XBRL DOCUMENT v3.8.0.1
FINANCIAL RISK MANAGEMENT - Foreign currency risk (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Risk of exchange rate depreciation    
Foreign currency sensitivity    
Change in foreign exchange rate against US$ 10.00% 10.00%
Risk of exchange rate appreciation    
Foreign currency sensitivity    
Change in foreign exchange rate against US$ 10.00% 10.00%
Euro | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax $ (18) $ (9)
Effect on other comprehensive income 132  
Euro | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 20 10
Effect on other comprehensive income (145)  
Pakistani Rupee | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (27) (30)
Pakistani Rupee | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 30 33
Algerian Dinar | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (3) (3)
Algerian Dinar | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 3 4
Uzbek Som | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (12) (4)
Effect on other comprehensive income   (27)
Uzbek Som | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 13 4
Effect on other comprehensive income   30
RUB | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 44 (80)
Effect on other comprehensive income   30
RUB | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (48) 84
Effect on other comprehensive income   (33)
Bangladeshi Taka | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (69) (68)
Bangladeshi Taka | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 76 75
Kazakh Tenge | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 4 5
Kazakh Tenge | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (5) (5)
Georgian Lari | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax (32) (30)
Georgian Lari | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 35 33
Armenian dram | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 0 18
Armenian dram | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 1 (20)
Other currencies | Risk of exchange rate depreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax 0 (5)
Other currencies | Risk of exchange rate appreciation    
Foreign currency sensitivity    
Effect on profit / (loss) before tax $ 0 $ 5