Segment Information - Reconciliation of Royalty Overrides and Service Fees to China Independent Service Providers from Segments to Consolidated (Detail) - USD ($) $ in Millions |
3 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
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| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||||
| Total royalty overrides and service fees to China independent service providers | [1],[2],[3],[4] | $ 433.4 | $ 452.0 | |||||||
| Primary Reporting Segment [Member] | ||||||||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||||
| Total royalty overrides and service fees to China independent service providers | [1],[2],[3],[4] | 401.2 | 414.5 | |||||||
| China [Member] | ||||||||||
| Revenues from External Customers and Long-Lived Assets [Line Items] | ||||||||||
| Total royalty overrides and service fees to China independent service providers | [1],[2],[3],[4] | $ 32.2 | $ 37.5 | |||||||
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