Income Taxes - Earliest Tax Years Subject to Examination by Major Jurisdiction (Detail) |
6 Months Ended |
|---|---|
Jun. 30, 2026 | |
| U.S. Federal | |
| Income Tax Examination [Line Items] | |
| Open tax years by major tax jurisdiction | 2011 |
| New York State and City | |
| Income Tax Examination [Line Items] | |
| Open tax years by major tax jurisdiction | 2015 |
| United Kingdom | |
| Income Tax Examination [Line Items] | |
| Open tax years by major tax jurisdiction | 2017 |
| Japan | |
| Income Tax Examination [Line Items] | |
| Open tax years by major tax jurisdiction | 2020 |
| Hong Kong | |
| Income Tax Examination [Line Items] | |
| Open tax years by major tax jurisdiction | 2020 |