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Financial Instruments - Schedule of Debt-securities, Available-for-sale (Details) $ in Millions | Sep. 30, 2025 USD ($)
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Amortized Cost |
Due in one year or less | $ 241
Due after one year | 272
Amortized Cost | 513
Estimated Fair Market Value |
Due in one year or less | 241
Due after one year | 274
Estimated Fair Market Value | $ 515

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