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Financial Instruments - Summary of Movements in Allowance for Impairment in Respect of Loans and Advances (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Disclosure of detailed information about financial instruments [abstract]
At January 1		$ 9	$ 13
Impairment loss recognized		11	10
Amounts written off		(9)	(14)
Exchange translation differences	[1]
At December 31		$ 11	$ 9
[1] Amount less than $1 million

X

- Definition

Impairment losses respect of loans and advances.

+ References

No definition available.

+ Details

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- Definition

Increase (decrease) through net exchange differences, allowance for impairment in respect of loans and advances.

+ References

No definition available.

+ Details

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- References

No definition available.

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X

- Definition

The amount of impairment loss recognised in profit or loss for loans and advances. [Refer: Impairment loss recognised in profit or loss]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard
-URIDate 2021-03-24

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- Definition

The amount of reversal of impairment loss recognised in profit or loss for loans and advances. [Refer: Reversal of impairment loss recognised in profit or loss]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard
-URIDate 2021-03-24

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