Non-current assets held for sale (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets and liabilities held for sale [Line Items]
Property, plant and equipment	$ 112,902	$ 114,836
Goodwill	12,373	12,480
Investments in associates	21,001	18,975
Inventories	23,711	16,873
Trade and other receivables	27,139	17,948
Non-current assets or disposal groups classified as held for sale or as held for distribution to owners	1,652	1,326
Trade and other current payables	(52,611)	(36,014)
Lease liabilities	(8,611)	(9,262)
Current provisions	(5,256)	(3,761)
Liabilities included in disposal groups classified as held for sale	(359)	(46)
Non-current assets held for sale [member]
Assets and liabilities held for sale [Line Items]
Property, plant and equipment	35	1,099
Goodwill	137	199
Investments in associates	632	0
Inventories	152	0
Trade and other receivables	696	28
Trade and other current payables	(238)	(36)
Lease liabilities	(74)	0
Current provisions	$ (47)	$ (10)

[Line Items] for Assets and liabilities held for sale [Table]

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The amount of current provisions, including provisions for employee benefits. [Refer: Provisions]

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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The amount of current inventories. [Refer: Inventories]

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The amount of investments in associates accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method]

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The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration.

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The amount of liabilities included in disposal groups classified as held for sale. [Refer: Liabilities; Disposal groups classified as held for sale [member]]

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The amount of non-current assets or disposal groups classified as held for sale or as held for distribution to owners. [Refer: Non-current assets or disposal groups classified as held for distribution to owners; Non-current assets or disposal groups classified as held for sale]

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The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period.

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The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables]

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The amount of current trade receivables and current other receivables. [Refer: Current trade receivables; Other current receivables]

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