Estimated Value of Returned Goods Assets and Related Return Liabilities (Detail) - Truck, Parts and Other - USD ($) $ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Trucks | ||
| Entity Wide Information Revenue From External Customer [Line Items] | ||
| Other current assets | $ 113.8 | $ 116.7 |
| Accounts payable, accrued expenses and other | 118.1 | 121.7 |
| Other noncurrent assets, net | 157.8 | 135.9 |
| Other liabilities | 167.4 | 144.7 |
| Assets | 271.6 | 252.6 |
| Liabilities | 285.5 | 266.4 |
| Parts Subsegment | ||
| Entity Wide Information Revenue From External Customer [Line Items] | ||
| Other current assets | 103.6 | 101.7 |
| Accounts payable, accrued expenses and other | 247.4 | 244.4 |
| Assets | 103.6 | 101.7 |
| Liabilities | $ 247.4 | $ 244.4 |