Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
|
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Realized and unrealized gains (losses) on financial instruments, net | $ (7) | $ (36) | $ (43) | $ (53) |
| Equity securities | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Realized and unrealized gains (losses) on financial instruments, net | (6) | (17) | (7) | (19) |
| Exchangeable senior debentures | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Realized and unrealized gains (losses) on financial instruments, net | $ (1) | $ (19) | $ (36) | $ (34) |
| X | ||||||||||
- 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/exampleRef
|
| X | ||||||||||
- Definition Amount of realized and unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|