Segment information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Depreciation from reportable segments:
Total depreciation	$ 6.8	$ 7.3	$ 13.8	$ 16.4
Other
Depreciation from reportable segments:
Total depreciation	1.9	2.0	3.9	4.7
MCM Products \| Operating Segments
Depreciation from reportable segments:
Total depreciation	4.3	4.9	8.8	9.1
All other segment \| Operating Segments
Depreciation from reportable segments:
Total depreciation	$ 0.6	$ 0.4	$ 1.1	$ 2.6

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Balance Type:	debit
Period Type:	duration