Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) on Financial Instruments (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Assets and Liabilities Measured at Fair Value | ||
| Realized and unrealized gains (losses) on financial instruments, net | $ 57 | $ 75 |
| Debt measured at fair value | ||
| Assets and Liabilities Measured at Fair Value | ||
| Realized and unrealized gains (losses) on financial instruments, net | 48 | 9 |
| Gain (loss) on changes in fair value | 0 | (6) |
| Cumulative amount of gain (loss) in changes in fair value | 65 | |
| Foreign currency forward contracts | ||
| Assets and Liabilities Measured at Fair Value | ||
| Realized and unrealized gains (losses) on financial instruments, net | (5) | 108 |
| Interest rate swaps | ||
| Assets and Liabilities Measured at Fair Value | ||
| Realized and unrealized gains (losses) on financial instruments, net | 15 | (35) |
| Other | ||
| Assets and Liabilities Measured at Fair Value | ||
| Realized and unrealized gains (losses) on financial instruments, net | $ (1) | $ (7) |