Equity method investments - Summary of carrying value and fair value of investments (Detail) - USD ($) $ in Millions |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Schedule of Equity Method Investments [Line Items] | ||
| Carrying Value | $ 19,951 | $ 19,978 |
| Kraft Heinz [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Carrying Value | 8,689 | 8,634 |
| Fair Value | 7,324 | 7,897 |
| Occidental [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Carrying Value | 10,808 | 10,894 |
| Fair Value | 17,221 | 10,894 |
| Berkadia [Member] | ||
| Schedule of Equity Method Investments [Line Items] | ||
| Carrying Value | $ 454 | $ 450 |
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of investments accounted under the equity method. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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