Acquisitions - Summary of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions							3 Months Ended	8 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Apr. 30, 2025	Feb. 03, 2025	Dec. 18, 2024	May 01, 2024	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2025	Apr. 30, 2025	Dec. 31, 2024
Preliminary Allocation
Goodwill	$ 1,530.1						$ 1,530.1	$ 1,530.1	$ 1,530.1		$ 1,478.0
Bonded Logic
Acquisitions
Total cash consideration transferred	60.7	$ 60.7
Preliminary Allocation
Receivables, net	3.2	3.2					3.2	3.2	3.2
Inventories	4.7	5.0					4.7	4.7	4.7
Other current assets	0.1	0.1					0.1	0.1	0.1
Property, plant and equipment	13.5	13.5					13.5	13.5	13.5
Other intangible assets	9.0	9.0					9.0	9.0	9.0
Other long-term assets	10.2	10.2					10.2	10.2	10.2
Accounts payable	(3.3)	(3.3)					(3.3)	(3.3)	(3.3)
Other current liabilities	(2.8)	(5.2)					(2.8)	(2.8)	(2.8)
Other long-term liabilities	(7.7)	(7.7)					(7.7)	(7.7)	(7.7)
Total identifiable net assets	26.9	24.8					26.9	26.9	26.9
Goodwill	33.8	$ 35.9					33.8	33.8	33.8
Bonded Logic | Measurement Period Adjustments
Measurement Period Adjustments
Total cash consideration transferred							0.0
Receivables, net							0.0
Inventories							(0.3)
Other current assets							0.0
Property, plant and equipment							0.0
Other intangible assets							0.0
Other long-term assets							0.0
Accounts payable							0.0
Other current liabilities							2.4
Other long-term liabilities							0.0
Total identifiable net assets							2.1
Goodwill							(2.1)
Therma Foam
Acquisitions
Total cash consideration transferred	52.9			$ 52.9
Preliminary Allocation
Receivables, net	2.9			2.7			2.9	2.9	2.9
Inventories	1.4			1.4			1.4	1.4	1.4
Other current assets	0.1			0.1			0.1	0.1	0.1
Property, plant and equipment	8.8			8.8			8.8	8.8	8.8
Other intangible assets	6.7			6.7			6.7	6.7	6.7
Accounts payable	(0.8)			(0.9)			(0.8)	(0.8)	(0.8)
Other current liabilities	(0.3)			(0.6)			(0.3)	(0.3)	(0.3)
Total identifiable net assets	18.8			18.2			18.8	18.8	18.8
Goodwill	34.1			$ 34.7			34.1	34.1	34.1
Therma Foam | Measurement Period Adjustments
Measurement Period Adjustments
Total cash consideration transferred								0.0
Receivables, net								0.2
Inventories								0.0
Other current assets								0.0
Property, plant and equipment								0.0
Other intangible assets								0.0
Accounts payable								0.1
Other current liabilities								0.3
Total identifiable net assets								0.6
Goodwill								(0.6)
PFB Holdco, Inc
Acquisitions
Total cash consideration transferred	266.5				$ 268.9
Preliminary Allocation
Cash and cash equivalents	6.4				6.4		6.4	6.4	6.4
Receivables, net	9.6				9.6		9.6	9.6	9.6
Inventories	14.5				14.5		14.5	14.5	14.5
Other current assets	5.9				6.6		5.9	5.9	5.9
Property, plant and equipment	31.7				31.7		31.7	31.7	31.7
Other intangible assets	124.3				112.8		124.3	124.3	124.3
Other long-term assets	46.2				46.1		46.2	46.2	46.2
Accounts payable	(3.9)				(4.6)		(3.9)	(3.9)	(3.9)
Other current liabilities	(14.0)				(27.8)		(14.0)	(14.0)	(14.0)
Deferred taxes	(30.1)				(27.9)		(30.1)	(30.1)	(30.1)
Other long-term liabilities	(43.6)				(43.5)		(43.6)	(43.6)	(43.6)
Total identifiable net assets	147.0				123.9		147.0	147.0	147.0
Goodwill	$ 119.5				$ 145.0		$ 119.5	$ 119.5	119.5
PFB Holdco, Inc | Measurement Period Adjustments
Measurement Period Adjustments
Total cash consideration transferred									(2.4)
Cash and cash equivalents									0.0
Receivables, net									0.0
Inventories									0.0
Other current assets									(0.7)
Property, plant and equipment									0.0
Other intangible assets									11.5
Other long-term assets									0.1
Accounts payable									0.7
Other current liabilities									13.8
Deferred taxes									(2.2)
Other long-term liabilities									(0.1)
Total identifiable net assets									23.1
Goodwill									$ (25.5)
MTL Holdings LLC
Acquisitions
Total cash consideration transferred			$ 424.6			$ 423.1
Preliminary Allocation
Cash and cash equivalents			10.3			10.3				$ 10.3
Receivables, net			14.0			14.0				14.0
Inventories			16.8			17.2				16.8
Other current assets			0.9			0.9				0.9
Property, plant and equipment			10.4			10.7				10.4
Other intangible assets			248.3			248.3				248.3
Other long-term assets			8.4			8.1				8.4
Accounts payable			(5.9)			(5.9)				(5.9)
Other current liabilities			(6.1)			(6.1)				(6.1)
Deferred taxes			(6.5)			(6.9)				(6.5)
Other long-term liabilities			(7.6)			(6.7)				(7.6)
Total identifiable net assets			283.0			283.9				283.0
Goodwill			$ 141.6			$ 139.2				141.6
MTL Holdings LLC | Measurement Period Adjustments
Measurement Period Adjustments
Total cash consideration transferred										1.5
Cash and cash equivalents										0.0
Receivables, net										0.0
Inventories										(0.4)
Other current assets										0.0
Property, plant and equipment										(0.3)
Other intangible assets										0.0
Other long-term assets										0.3
Accounts payable										0.0
Other current liabilities										0.0
Deferred taxes										0.4
Other long-term liabilities										(0.9)
Total identifiable net assets										(0.9)
Goodwill										$ 2.4