Segment Information - CODM (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Net sales	$ 365.1	$ 390.6	$ 649.1	$ 730.7
Cost of sales	227.2	267.4	397.8	507.8
Selling, general, and administrative expenses	44.2	41.4	87.3	88.6
Other (income) expense, net	4.3	23.9	8.4	56.1
PM
Segment Reporting Information [Line Items]
Net sales	153.9	157.2	300.7	302.3
Cost of sales	58.8	61.4	113.2	113.5
Selling, general, and administrative expenses	16.3	13.4	32.7	28.4
Other (income) expense, net	1.7	0.2	(1.4)	0.2
Segment EBITDA	77.1	82.2	156.2	160.2
PC
Segment Reporting Information [Line Items]
Net sales	167.9	185.5	262.9	332.5
Cost of sales	117.2	156.2	194.6	292.1
Selling, general, and administrative expenses	18.8	19.8	37.6	40.9
Other (income) expense, net	(0.1)	0.2	(1.0)	0.8
Segment EBITDA	32.0	9.3	31.7	(1.3)
APT
Segment Reporting Information [Line Items]
Net sales	43.3	47.9	85.5	95.9
Cost of sales	35.7	32.4	59.3	64.8
Selling, general, and administrative expenses	6.8	5.6	12.7	11.4
Other (income) expense, net	(0.1)	0.1	0.1	0.4
Segment EBITDA	$ 0.9	$ 9.8	$ 13.4	$ 19.3