Income taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Disclosure [Abstract]
Income (loss) before income taxes	$ 114.6	$ (1.3)	$ 195.2	$ 154.5
Income tax expense	$ (21.7)	$ (6.0)	$ (41.9)	$ (40.3)
Effective income tax rate	18.90%	(461.50%)	21.50%	26.10%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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+ Details