Related Party Transactions - Additional Information (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
Dec. 31, 2025 |
|
| Related Party Transactions [Abstract] | |||||
| Administrative expenses | $ 3 | $ 5 | $ 10 | $ 15 | |
| Purchases from related party | 11 | 2 | 32 | 2 | |
| Services | 4 | $ 1 | 14 | $ 1 | |
| Other receivables | 32 | 32 | $ 33 | ||
| Other payables | 17 | 17 | 8 | ||
| Notes receivable | $ 60 | $ 60 | $ 64 | ||