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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Carrying value of equity securities by balance sheet location | The carrying values of our equity securities were included in the following line items in our consolidated balance sheets (in millions):
| Fair Value with Changes Recognized in Income | Measurement Alternative — No Readily Determinable Fair Value
December 31, 2024 |  |
Marketable securities | $ | 418 |  | $ | — |
Other noncurrent assets | 1,616 |  | 40 |
Total equity securities | $ | 2,034 |  | $ | 40 |
December 31, 2023 |  |
Marketable securities | $ | 345 |  | $ | — |
Other noncurrent assets | 1,661 |  | 42 |
Total equity securities | $ | 2,006 |  | $ | 42 |
Unrealized Gain (Loss) on Investments [Table Text Block] | The calculation of net unrealized gains and losses recognized during the year related to equity securities still held at the end of the year is as follows (in millions):
Year Ended December 31, | 2024 | 2023
Net gains (losses) recognized during the year related to equity securities | $ | 323 |  | $ | 371 |
Less: Net gains (losses) recognized during the year related to equity securities sold during the year | 106 |  | 52 |
Net unrealized gains (losses) recognized during the year related to equity securities still held at the end of the year | $ | 217 |  | $ | 319 |
Schedule of available-for-sale and trading securities | Our debt securities consisted of the following (in millions):
|  | Gross Unrealized | Estimated Fair Value
| Cost | Gains | Losses
December 31, 2024 |  |  |  |
Trading securities | $ | 45 |  | $ | 1 |  | $ | (1) |  | $ | 45 |
Available-for-sale securities | 1,728 |  | 21 |  | (118) |  | 1,631 |
Total debt securities | $ | 1,773 |  | $ | 22 |  | $ | (119) |  | $ | 1,676 |
December 31, 2023 |  |  |  |
Trading securities | $ | 43 |  | $ | — |  | $ | (2) |  | $ | 41 |
Available-for-sale securities | 1,136 |  | 26 |  | (28) |  | 1,134 |
Total debt securities | $ | 1,179 |  | $ | 26 |  | $ | (30) |  | $ | 1,175 |
Carrying values of debt securities by balance sheet location | The carrying values of our debt securities were included in the following line items in our consolidated balance sheets (in millions):
| December 31, 2024 |  | December 31, 2023
| Trading Securities | Available-for-Sale Securities |  | Trading Securities | Available-for-Sale Securities
Marketable securities | $ | 45 |  | $ | 1,260 |  |  | $ | 41 |  | $ | 914 |
Other noncurrent assets | — |  | 371 |  |  | — |  | 220 |
Total debt securities | $ | 45 |  | $ | 1,631 |  |  | $ | 41 |  | $ | 1,134 |
Contractual maturities of available-for-sale debt securities | The contractual maturities of these available-for-sale debt securities as of December 31, 2024 were as follows (in millions):
| Cost | Estimated Fair Value |  |  |
Within 1 year | $ | 299 |  | $ | 296 |  |  |  |
After 1 year through 5 years | 1,217 |  | 1,132 |  |  |  |
After 5 years through 10 years | 35 |  | 42 |  |  |  |
After 10 years | 177 |  | 161 |  |  |  |
Total | $ | 1,728 |  | $ | 1,631 |  |  |  |
Schedule of Realized Gain (Loss) [Table Text Block] | The sale and/or maturity of available-for-sale debt securities resulted in the following realized activity (in millions):
Year Ended December 31, | 2024 | 2023 | 2022
Gross gains | $ | 14 |  | $ | 3 |  | $ | 5 |
Gross losses | (12) |  | (10) |  | (136) |
Proceeds | 709 |  | 361 |  | 1,498 |

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- Definition Tabular disclosure of the proceeds from sales of available-for-sale securities and the gross realized gains and gross realized losses that have been included in earnings as a result of those sales. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-9 + Details
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