Trade and Other Payables - Summary of Movement in Deferred and Contingent Consideration (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure of contingent liabilities [abstract]
At 1 January	$ 364	$ 376
Translation adjustment	(1)	1
Arising on acquisitions and investments during year (note 30)	1	7
Changes in estimate	10	13
Paid during year	(33)	(54)
Discount unwinding	20	21
At 31 December	$ 361	$ 364

Contingent and deferred consideration recognised in business combination.

No definition available.

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Increase decrease through translation adjustment liabilities related to contingent and deferred consideration acquisition.

No definition available.

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Increase due to unwinding of discounts related to deferred and contingent acquisition consideration.

No definition available.

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Increase through adjustments arising from passage of time, contingent and deferred consideration recognised in business combination.

No definition available.

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New liabilities, contingent and deferred consideration recognised in business combination.

No definition available.

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Settled liabilities, contingent and deferred consideration recognised in business combination.

No definition available.

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No definition available.

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