Segment Information - Reconciliation of Operating Profit (Loss) from Segments to Consolidated (Parenthetical) (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Selling, General and Administrative Expenses [Member] | China [Member] | ||||
| Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items] | ||||
| Independent service providers service fees costs | $ 39.4 | $ 41.1 | $ 71.0 | $ 77.9 |