Capital management (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Notes to Financial Statements [Abstract]
Long-term debt	$ 1,008.6	$ 1,107.5
Cash and cash equivalents	$ 568.9	$ 541.8	$ 249.8

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

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