Supplemental Financial Statement Information - Operating Lease Information (Detail) - USD ($) $ in Millions |
Jun. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| Lessee, Lease, Description [Line Items] | ||
| Fair Value of Assets (Liability), Right of use assets | $ 145.6 | $ 157.2 |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Other noncurrent assets | Other noncurrent assets |
| Fair Value of Assets (Liability), Total lease liabilities | $ 35.6 | $ 36.5 |
| Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Accrued and other liabilities | Accrued and other liabilities |
| Fair Value of Assets (Liability), Total lease liabilities | $ 128.3 | $ 139.9 |
| Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Other noncurrent liabilities | Other noncurrent liabilities |
| Fair Value of Assets (Liability), Total lease liabilities | $ 163.9 | $ 176.4 |