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INVESTMENTS - Debt Securities (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 29, 2024 | Dec. 31, 2023
Cost |  |
Trading securities | $ 45 | $ 43
Available-for-sale securities | 1,516 | 1,136
Total debt securities | 1,561 | 1,179
Gains |  |
Trading securities | 1 | 0
Available-for-sale securities | 29 | 26
Total debt securities | 30 | 26
Losses |  |
Trading securities | (2) | (2)
Available-for-sale securities | (25) | (28)
Total debt securities | (27) | (30)
Estimated Fair Value |  |
Trading securities | 44 | 41
Available-for-sale securities | 1,520 | 1,134
Total debt securities | $ 1,564 | $ 1,175

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