Variable interest entities - Additional Information (Detail) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Variable Interest Entity [Line Items] | ||
| Long-term debt | $ 2,618.7 | $ 2,658.8 |
| Equity method investments | $ 6.6 | $ 0.0 |
| Welland, Canada Production Facility [Member] | ||
| Variable Interest Entity [Line Items] | ||
| Variable interest entity, qualitative or quantitative information, nature of vie | The Company holds an investment in a variable interest entity (“Welland VIE”) that was created in the third quarter of 2025 together with a group of investors to acquire, own, and lease land and buildings used in the Company’s production operations in Welland, Canada. The Welland VIE is financed through a combination of equity contributions from investors and third-party debt. | |
| Variable interest entity, methodology for determining whether entity is primary beneficiary | The Company’s variable interests in the Welland VIE consist of its equity investment and a lease arrangement for the production facility in Welland, Canada. The Company determined that it is the primary beneficiary of the Welland VIE because it has (i) the power to direct the activities that most significantly impact the Welland VIE’s economic performance and (ii) the obligation to absorb losses and the right to receive benefits that could potentially be significant to the Welland VIE. Accordingly, the Company consolidates the Welland VIE. | |
| Long-term debt | $ 33.7 | |
| Nordic LuxCo [Member] | ||
| Variable Interest Entity [Line Items] | ||
| Variable interest entity, qualitative or quantitative information, nature of vie | The Company holds a 24.9% equity interest in Nordic LuxCo, which was acquired through a non-cash capital contribution from its parent on March 30, 2026. See Note 25 – Related party transactions for a description of the related-party service and manufacturing agreements with Heaten Germany GmbH, a subsidiary of Nordic LuxCo. | |
| Variable interest entity, methodology for determining whether entity is primary beneficiary | The Company has determined that it is not the primary beneficiary of Nordic LuxCo because it does not have the power to direct the activities that most significantly impact Nordic LuxCo’s economic performance, which are governed by Nordic LuxCo’s board of directors and its majority shareholder. Accordingly, Nordic LuxCo is not consolidated by the Company and the Company accounts for its interest under the equity method of accounting. | |
| Variable interest entity, qualitative or quantitative information, ownership percentage | 24.90% | |
| Equity method investments | $ 6.6 | |
| Variable interest entity, reporting entity involvement, maximum loss exposure, amount | $ 7.4 |