Payroll and Related Benefits - Summary of Payroll and Related Benefits (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure Of Share Of Equity Investment [line items]
Share-based payment expense	$ (510)	$ (169)	$ (340)
Payroll and related benefits	(176)	(156)	(137)
Payroll and related benefits [member]
Disclosure Of Share Of Equity Investment [line items]
Wages and salaries	(4,734)	(4,124)	(4,563)
Social security contributions	(670)	(582)	(683)
Other personnel cost	(706)	(637)	(678)
Pension expense for defined benefit plans	(176)	(218)	(193)
Share-based payment expense	(510)	(169)	(340)
Contributions to defined contribution plans	(147)	(91)	(101)
Payroll and related benefits	$ (6,944)	$ (5,821)	$ (6,558)

Disclosure Of Share Of Equity Investment

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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 from share-based payment transactions with employees. [Refer: Expense from share-based payment transactions]

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- Definition

The amount of employee expenses that the entity does not separately disclose in the same statement or note.

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- Definition

The amount of post-employment benefit expense included in profit or loss relating to defined benefit plans. [Refer: Profit (loss); Defined benefit plans [member]] [Contrast: Increase (decrease) in net defined benefit liability (asset) resulting from expense (income) in profit or loss]

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- Definition

The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

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- Definition

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

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- Definition

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

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