Investments in associates - Summarized aggregate financial information of associates (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of associates [line items]
Earnings from associates – after interest and tax	$ 3,456	$ (101)	$ 2,681
Investments in associates	21,001	18,975
Rosneft
Disclosure of associates [line items]
Earnings from associates – after interest and tax	2,694	(229)	2,295
Investments in associates	14,354	11,808
Other associates
Disclosure of associates [line items]
Earnings from associates – after interest and tax	762	128	386
Investments in associates	6,647	7,167
Associates
Disclosure of associates [line items]
Earnings from associates – after interest and tax	3,456	(101)	$ 2,681
Investments in associates	$ 21,001	$ 18,975

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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- Definition

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

+ References

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- Definition

The entity's share of the profit (loss) of associates accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method; Profit (loss)]

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