Investments of Insurance Subsidiaries - Schedule of Investments (Detail) - USD ($) $ in Millions |
Sep. 30, 2026 |
Dec. 31, 2025 |
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| Debt Securities, Available-for-sale [Line Items] | ||
| Amounts classified as current assets | $ (111) | $ (103) |
| Investment carrying value | 463 | 485 |
| Money market funds and other, Amortized Cost | 257 | 260 |
| Money market funds and other, Unrealized Gains | 0 | 0 |
| Money market funds and other, Unrealized Losses | 0 | 0 |
| Money market funds and other, Fair Value | 257 | 260 |
| Investment Owned, at Cost, Total | 599 | 602 |
| Investment Gains | 0 | 1 |
| Investment Losses | (25) | (15) |
| Investment Fiar Value | 574 | 588 |
| Debt Securities [Member] | ||
| Debt Securities, Available-for-sale [Line Items] | ||
| Amortized Cost | 342 | 342 |
| Unrealized Amounts, Gains | 0 | 1 |
| Unrealized Amounts, Losses | (25) | (15) |
| Fair Value | $ 317 | $ 328 |
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- Definition Investment gains. No definition available.
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- Definition Investment losses. No definition available.
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- Definition Money market funds and other amortized cost. No definition available.
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- Definition Money market funds and other fair value. No definition available.
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- Definition Money market funds and other, unrealized gains. No definition available.
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- Definition Money market funds and other, unrealized losses. No definition available.
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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Cost of the investment. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Fair value of investment in security owned. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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