Long-term debt - current and non-current - Summary of current and non-current portions of long-term debt (Detail) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt Disclosure [Abstract]
Long-term debt—net	$ 2,607.1	$ 2,647.4
Current portion of Long-term debt—net	11.6	11.4
Total	$ 2,618.7	$ 2,658.8

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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