Joint ventures and associates - Summary of Carrying Amount of Interests in Joint Ventures and Associates (Details) - USD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
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| Interests In Other Entities [Abstract] | ||
| Carrying amount of interests in joint ventures | $ 19,814 | $ 15,783 |
| Carrying amount of interests in associates | 7,961 | 7,662 |
| Joint ventures and associates | $ 27,775 | $ 23,445 |
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- Definition The amount of investments accounted for using the equity method. The equity method is a method of accounting whereby the investment is initially recognised at cost and adjusted thereafter for the post-acquisition change in the investor's share of net assets of the investee. The investor's profit or loss includes its share of the profit or loss of the investee. The investor's other comprehensive income includes its share of the other comprehensive income of the investee. [Refer: At cost [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of investments in associates in an entity's separate financial statements. [Refer: Total for all associates [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amount of investments in joint ventures in an entity's separate financial statements. [Refer: Total for all joint ventures [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Interests In Other Entities [Abstract] No definition available.
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