Fair Value Measurements - Gains (Losses) on Financial Instruments (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total | $ (3) | $ 18 |
| 2.75% Exchangeable Senior Debentures | Senior Notes | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Stated interest rate (as a percent) | 2.75% | |
| Debt measured at fair value | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total | $ (3) | 15 |
| Gain (loss) on specific credit risk | (1) | (31) |
| Cumulative loss on credit risk | 8 | |
| Other | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Total | $ 0 | $ 3 |
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- Definition Other Comprehensive Income (Loss), Financial Liability, Fair Value Option, Unrealized Gain (Loss) Cumulative Value, before Tax No definition available.
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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- Definition Amount of realized and unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax and reclassification adjustment, of unrealized gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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