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Fair Value - Schedule of Fair Value, Assets Measured on Recurring Basis (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Available-for-sale debt securities | $ 182 | $ 179
Fair Value, Measurements, Recurring |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Investments in equity securities | 69 | 107
Available-for-sale debt securities | 182 | 179
Trading securities | 5 | 5
Total assets | 256 | 291
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Investments in equity securities | 69 | 107
Total assets | 69 | 107
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |
Available-for-sale debt securities | 182 | 179
Trading securities | 5 | 5
Total assets | $ 187 | $ 184

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