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Employment costs and provisions - Summary of employment costs and provisions (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total employment costs
– Wages and salaries	$ 6,004	$ 5,625	$ 5,115
– Social security costs	461	470	425
– Net post-retirement charge	605	449	559
– Share-based payment charge	172	144	122
Employment costs before utilisation of provisions	7,242	6,688	6,221
Less: charged within movement in provisions (see below)	(187)	(52)	(219)
Total employment costs	$ 7,055	$ 6,636	$ 6,002

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- References

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- Definition

The expense of all forms of consideration given by an entity in exchange for a service rendered by employees or for the termination of employment.

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- Definition

The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

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- Definition

A class of employee benefits expense that represents social security contributions. [Refer: Employee benefits expense]

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A class of employee benefits expense that represents wages and salaries. [Refer: Employee benefits expense]

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Employee benefits charged within provisions.

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Employment Costs Before Utilisation Of Provisions

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The amount of post-retirement benefits expense, represented as the combined expenses related to defined benefit plans and defined contributions plans.

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