Long-term debt - current and non-current - Schedule of current and noncurrent portions of long-term debt (Details) - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025
Debt Disclosure [Abstract]
Long-term debt - net	$ 2,596.1	$ 2,647.4
Current portion of Long-term debt -net	15.2	11.4
Total	$ 2,611.3	$ 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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