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Financial and capital risk management (Details 6) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
IfrsStatementLineItems [Line Items] |  |  |
Derivatives settlement cash outflow (inflow) | $ 567 | $ (83) | $ (197)
Euro Fixed Rate Versus U S Fixed Rate Swap [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Derivative financial liabilities |  | 7 |
Derivatives settlement cash outflow (inflow) | 4 |  |
Derivatives settlement cash outflow (inflow) |  |  |
Derivative assets, notional amount |  | 150 |
Derivative receivable interest rate | 0.00% |  |
Derivative liabilities, notional amount |  | 150 |
Derivative payable interest rate | 0.00% |  |
Euro Fixed Rate Versus U S Fixed Rate Swap [Member] | Not later than one year [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Derivative financial liabilities |  |  |
S O F R Versus U S Fixed Rate Swap [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Derivative financial liabilities | (24) |  |
Derivatives settlement cash outflow (inflow) | 4 |  |
Derivatives settlement cash outflow (inflow) | 10 |  |
Derivative assets, notional amount | 2,300 |  |
Derivative liabilities, notional amount | $ 2,300 |  |
Derivative payable interest rate | 3.60% |  |
S O F R Versus U S Fixed Rate Swap [Member] | Not later than one year [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Derivative financial liabilities | $ 4 |  |
S O F R Versus U S Fixed Rate Swap [Member] | Later than one year [member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Derivative financial liabilities | $ (28) |  |

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- Definition The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The measure of a potential loss exposure as a result of future market movements, based on a specified confidence interval and measurement horizon. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 41 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_41&doctype=Standard -URIDate 2023-03-23 + Details
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- References No definition available. + Details
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- Details
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