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Financial and capital risk management (Details 6) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Dec. 31, 2023
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | $ 16 | $ (24)
Derivatives settlement cash outflow (inflow) | 4 |
Value at Risk | 5 |
Not later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities |  |
Later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | 12 |
Later than one year and not later than two years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | 4 |
S O F R Versus U S Fixed Rate Swap [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | 16 | (24)
Derivatives settlement cash outflow (inflow) | 4 |
Value at Risk | 5 |
Derivative assets, notional amount | 2,150 | 2,300
Derivative liabilities, notional amount | $ 2,150 | $ 2,300
Derivative payable interest rate | 3.77% |
S O F R 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] | Later than one year [member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | 12 |
S O F R Versus U S Fixed Rate Swap [Member] | Later than one year and not later than two years [member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative financial liabilities | $ 4 |
Euro Fixed Rate Versus U S Fixed Rate Swap [Member] |  |
IfrsStatementLineItems [Line Items] |  |
Derivative receivable interest rate | 0.00% |

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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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Period Type: | instant

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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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Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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Period Type: | instant

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- References No definition available. + Details
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- References No definition available. + Details
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- References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |