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Investments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 29, 2024 | Jul. 01, 2023 | Jun. 29, 2024 | Jul. 01, 2023 | Dec. 31, 2023
Investments |  |  |  |  |
Total trading short-term investments | $ 1,072 |  | $ 1,072 |  | $ 973
Unrealized gains on trading securities | 5 | $ 17 | 18 | $ 48 |
Long term investments | 133 |  | 133 |  | 207
Denominated in foreign currencies |  |  |  |  |
Investments |  |  |  |  |
Total trading short-term investments | 37 |  | 37 |  | 18
Business Development Company |  |  |  |  |
Investments |  |  |  |  |
Long term investments |  |  |  |  | 68
Domestic equity securities |  |  |  |  |
Investments |  |  |  |  |
Fair Value | 211 |  | 211 |  | 143
Foreign equity securities |  |  |  |  |
Investments |  |  |  |  |
Fair Value | 101 |  | 101 |  | 96
Domestic debt securities |  |  |  |  |
Investments |  |  |  |  |
Fair Value | 616 |  | 616 |  | 593
Foreign debt securities |  |  |  |  |
Investments |  |  |  |  |
Fair Value | 127 |  | 127 |  | 120
Money market funds held in trading accounts |  |  |  |  |
Investments |  |  |  |  |
Fair Value | 11 |  | 11 |  | 17
Other trading securities |  |  |  |  |
Investments |  |  |  |  |
Fair Value | $ 6 |  | $ 6 |  | $ 4

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