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Warrant liabilities - Summary of Change in Carrying Value of the Warrants (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Disclosure For Change In Carrying Value Of The Warrants. [Line Items]
Initial recognition	$ 0
Ending balance	54
Registered for Sale [Member]
Disclosure For Change In Carrying Value Of The Warrants. [Line Items]
Initial recognition	36
Change in fair value	(15)
Ending balance	21
In Process of Registration for Resale [Member]
Disclosure For Change In Carrying Value Of The Warrants. [Line Items]
Initial recognition	55
Change in fair value	(22)
Ending balance	33
Total
Disclosure For Change In Carrying Value Of The Warrants. [Line Items]
Initial recognition	91
Change in fair value	(37)
Ending balance	$ 54

X

- Definition

Disclosure for change in carrying value of The warrants.

+ References

No definition available.

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- Definition

Adjustments for gains (losses) on changes in the fair value of derivatives to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: At fair value [member]; Derivatives [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 20
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_20&doctype=Standard
-URIDate 2021-03-24

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- Definition

The amount of non-current warrant liabilities. [Refer: Warrant liability]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

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