Investment gains (losses) - Narrative (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Gain (Loss) on Securities [Line Items] | ||||
| Sales of equity securities | $ 27,780 | $ 11,592 | ||
| Taxable gains (losses) on sales of equity securities | $ 2,300 | $ 5,300 | $ 9,500 | $ 8,400 |
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- Definition Taxable gains (loss) on sales of equity securities. No definition available.
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- Definition Amount of cash inflow from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/2009/role/commonPracticeRef
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