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Risks arising from Financial instruments - Summary of Hedging Reserve and Hedging Instruments (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disclosure of detailed information about hedging instruments [line items]
As per 1 January	$ 145	$ 481
Change in fair value of hedging instrument recognized in OCI	(434)	183
Reclassified to profit or loss / cost of inventory	470	(518)
As per 31 December	181	145
Foreign currency futures [member]
Disclosure of detailed information about hedging instruments [line items]
As per 1 January	491	679
Change in fair value of hedging instrument recognized in OCI	(237)	143
Reclassified to profit or loss / cost of inventory	102	(331)
As per 31 December	356	491
Commodity Contracts [member]
Disclosure of detailed information about hedging instruments [line items]
As per 1 January	(476)	(306)
Change in fair value of hedging instrument recognized in OCI	(197)	39
Reclassified to profit or loss / cost of inventory	368	(208)
As per 31 December	(304)	(476)
Other hedging instrument [member]
Disclosure of detailed information about hedging instruments [line items]
As per 1 January	131	111
Reclassified to profit or loss / cost of inventory	0	22
As per 31 December	$ 131	$ 131

X

- Definition

Hedge reserve

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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X

- Definition

The gains (losses) on hedging instruments in fair value hedges. [Refer: Fair value hedges [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 24
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_24_a_i&doctype=Standard&book=b
-URIDate 2023-03-23

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Period Type:	duration

X

- Definition

The gains (losses) on the ineffective portion of cash flow hedges recognised in profit or loss. [Refer: Cash flow hedges [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expired 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 24
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_24_b&doctype=Standard&book=b
-URIDate 2023-03-23

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- Details

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- Details

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