Segment Information - Segment Results (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		$ 1,126.7	$ 898.4	$ 3,041.7	$ 2,408.4
Segment selling, general and administrative expenses	[1]	(149.2)	(135.0)	(452.8)	(382.9)
Central and other costs		(7.9)	(4.9)	(20.9)	(7.2)
Allocated Madison Industries costs		0.0	(4.0)	(10.7)	(12.3)
Segment EBITDA add-backs (excluding depreciation and purchase accounting adjustments)		0.1	(5.9)	0.1	(16.7)
Depreciation		(12.6)	(12.3)	(38.6)	(34.9)
Intangible asset amortization		(39.9)	(40.8)	(121.5)	(100.7)
Restructuring expenses		(1.8)	(0.8)	(4.7)	(3.5)
Equity appreciation rights expense		(11.3)	(5.3)	(38.0)	(32.6)
Transaction related expenses		(17.1)	(0.7)	(21.5)	(12.5)
Interest and financing expenses, net		(36.9)	(100.1)	(212.4)	(255.0)
Other income (expense)		(50.4)	3.1	(50.2)	12.6
Income (loss) from continuing operations before income taxes		127.6	84.4	299.0	193.6
Litigation settlement, gain					3.9
Loss on extinguishment of debt				27.7	0.0
Commercial
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		771.8	554.2	2,040.4	1,580.1
Residential
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		354.9	344.2	1,001.3	828.3
Operating Segments
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Total segment adjusted EBITDA		305.4	256.1	817.4	656.4
Loss on extinguishment of debt				27.7
Operating Segments | Not Designated as Hedging Instrument
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Unrealized loss on derivatives		52.2		52.2
Operating Segments | Commercial
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		771.9	554.2	2,040.6	1,580.2
Segment cost of goods sold		(499.4)	(328.5)	(1,296.2)	(952.0)
Segment selling, general and administrative expenses		(78.5)	(71.4)	(229.4)	(207.3)
Segment EBITDA add-backs		6.5	7.9	19.6	25.7
Total segment adjusted EBITDA		200.5	162.2	534.6	446.6
Depreciation		(6.3)	(6.4)	(19.5)	(19.0)
Segment EBITDA add-backs adjustments			1.4		3.1
Operating Segments | Residential
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		355.5	344.5	1,004.9	829.3
Segment cost of goods sold		(206.5)	(212.0)	(590.6)	(523.0)
Segment selling, general and administrative expenses		(50.4)	(48.8)	(150.6)	(122.4)
Segment EBITDA add-backs		6.3	10.2	19.1	25.9
Total segment adjusted EBITDA		104.9	93.9	282.8	209.8
Depreciation		(6.3)	(5.9)	(19.1)	(15.9)
Segment EBITDA add-backs adjustments			4.4		9.7
Intersegment Eliminations | Commercial
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		(0.1)	0.0	(0.2)	(0.1)
Intersegment Eliminations | Residential
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Product and Service, Revenue [Line Items]
Net Sales		$ (0.6)	$ (0.3)	$ (3.6)	$ (1.0)

[1] Inclusive of equity appreciation rights expense of $11.3 and $5.3 for the three months ended September 30, 2026 and 2025, respectively, and $38.0 and $32.6 for the nine months ended September 30, 2026 and 2025, respectively.