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Financial risk management - D.2.1. Debt denominated in US Dollars and other currencies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | $ 6,804 | $ 7,744
Reasonably possible change in risk variable, percent | 1.00% |
Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | $ 6,804 | 7,744
Reasonably possible change in risk variable, percent | 10.00% |
Reasonably possible increase (decrease) in risk variable, impact on profit before tax | $ 20 | 38
Debt denominated in US dollars | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 4,100 | 4,827
Total debt denominated in other currencies | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 2,704 | 2,917
Guatemala | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 595 | 605
Colombia | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 605 | 699
Tanzania | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 0 | 38
Bolivia | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 260 | 310
Paraguay | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 171 | 195
El Salvador | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 173 | 99
Panama | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 773 | 846
Luxembourg (COP denominated) | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | 30 | 36
Costa Rica | Foreign currency risk |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |
Debt | $ 96 | $ 88

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