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Investments of Insurance Subsidiaries (Tables) | 9 Months Ended
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Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract] |
Schedule of Investments | A summary of our insurance subsidiaries’ investments at September 30, 2025 and December 31, 2024 follows (dollars in millions):
|  | September 30, 2025 |
|  |  |  |  | Unrealized Amounts |  |  |  |
|  | Amortized Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Debt securities |  | $ | 343 |  |  | $ | 1 |  |  | $ | (16 | ) |  | $ | 328 |
Money market funds and other |  |  | 339 |  |  |  | — |  |  |  | — |  |  |  | 339 |
|  | $ | 682 |  |  | $ | 1 |  |  | $ | (16 | ) |  |  | 667 |
Amounts classified as current assets |  |  |  |  |  |  |  |  |  |  |  | (94 | )
Investment carrying value |  |  |  |  |  |  |  |  |  |  | $ | 573 |
|  | December 31, 2024 |
|  |  |  |  | Unrealized Amounts |  |  |  |
|  | Amortized Cost |  |  | Gains |  |  | Losses |  |  | Fair Value |
Debt securities |  | $ | 388 |  |  | $ | — |  |  | $ | (27 | ) |  | $ | 361 |
Money market funds and other |  |  | 296 |  |  |  | — |  |  |  | — |  |  |  | 296 |
|  | $ | 684 |  |  | $ | — |  |  | $ | (27 | ) |  |  | 657 |
Amounts classified as current assets |  |  |  |  |  |  |  |  |  |  |  | (88 | )
Investment carrying value |  |  |  |  |  |  |  |  |  |  | $ | 569 |
Schedule of Maturities of Investments | Scheduled maturities of investments in debt securities at September 30, 2025 were as follows (dollars in millions):
|  | Amortized Cost |  |  | Fair Value |
Due in one year or less |  | $ | 18 |  |  | $ | 17 |
Due after one year through five years |  |  | 151 |  |  |  | 147 |
Due after five years through ten years |  |  | 114 |  |  |  | 107 |
Due after ten years |  |  | 60 |  |  |  | 57 |
|  | $ | 343 |  |  | $ | 328 |

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