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Interest Bearing Liabilities and Financing Facilities - Additional Information (Detail) - USD ($) $ in Millions |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jul. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2024
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Loan Facilities Drawdown |  | $ 500 |  |  |
Repayments of borrowings, classified as financing activities |  |  | $ 41 |  |
Undrawn borrowing facilities |  | 6,500 |  | $ 6,050 |
Cancellation of undrawn borrowing facilities |  | 1,550 |  |  |
Syndicate Term Loan [Member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Borrowings |  | $ 450 |  |  |
CHF Medium Term Note [Member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Repayments of borrowings, classified as financing activities |  |  |  | 201 |
Syndicated facility [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Borrowings maturity |  | 10 years |  |  |
JBIC facility [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Borrowings maturity |  | 10 years |  |  |
JBIC facility [member] | Loan commitments [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Borrowings |  | $ 1,000 |  |  |
JBIC facility [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Repayments of borrowings, classified as financing activities | $ 83 |  |  |  |
Unsecured bonds [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Financial liabilities carrying amount |  |  |  | 4,087 | $ 4,087
Financial liabilities at fair value |  |  |  | 3,936 | 3,958
Medium Term Notes [member] |  |  |  |  |
Interest bearing liabilities and financing facilities [line items] |  |  |  |  |
Financial liabilities carrying amount |  |  |  | 200 | 200
Financial liabilities at fair value |  |  |  | $ 188 | $ 188

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- Definition The amount of outstanding funds that the entity is obligated to repay. + 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 maturity of borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_7&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_25&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 17 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_17_d&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2023-01-01 -Paragraph 50 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2023-en-r&anchor=para_50_a&doctype=Standard -URIDate 2023-03-23 + Details
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