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Investments in equity securities (Tables) | 12 Months Ended
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Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Schedule of investments in equity securities | Investments in equity securities are summarized as follows (in millions).
|  | Cost Basis |  |  | Net Unrealized Gains |  |  | Fair Value |
December 31, 2023 * |  |  |  |  |  |  |  |  |
Banks, insurance and finance |  | $ | 27,136 |  |  | $ | 51,176 |  |  | $ | 78,312 |
Consumer products |  |  | 34,248 |  |  |  | 166,895 |  |  |  | 201,143 |
Commercial, industrial and other |  |  | 48,032 |  |  |  | 26,355 |  |  |  | 74,387 |
|  | $ | 109,416 |  |  | $ | 244,426 |  |  | $ | 353,842 |
* Approximately 79% of the aggregate fair value was concentrated in five companies (American Express Company – $28.4 billion; Apple Inc. – $174.3 billion; Bank of America Corporation – $34.8 billion; The Coca-Cola Company – $23.6 billion and Chevron Corporation – $18.8 billion).
|  | Cost Basis |  |  | Net Unrealized Gains |  |  | Fair Value |
December 31, 2022 * |  |  |  |  |  |  |  |  |
Banks, insurance and finance |  | $ | 25,893 |  |  | $ | 43,663 |  |  | $ | 69,556 |
Consumer products |  |  | 40,508 |  |  |  | 112,384 |  |  |  | 152,892 |
Commercial, industrial and other |  |  | 65,209 |  |  |  | 21,136 |  |  |  | 86,345 |
|  | $ | 131,610 |  |  | $ | 177,183 |  |  | $ | 308,793 |
* Approximately 75% of the aggregate fair value was concentrated in five companies (American Express Company – $22.4 billion; Apple Inc. – $119.0 billion; Bank of America Corporation – $34.2 billion; The Coca-Cola Company – $25.4 billion and Chevron Corporation – $30.0 billion).

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- Definition Tabular disclosure of the reconciliation of equity securities from cost basis to fair value. + References No definition available. + Details
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