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Acquisitions - Narrative (Details) - USD ($) $ in Millions			3 Months Ended		9 Months Ended
	Aug. 06, 2025	Jul. 10, 2024	Sep. 28, 2025	Sep. 29, 2024	Sep. 28, 2025	Mar. 31, 2025	Sep. 29, 2024	Dec. 29, 2024
Business Combination [Line Items]
Goodwill			$ 1,126.9		$ 1,126.9			$ 1,125.8
Supreme
Business Combination [Line Items]
Property, plant and equipment			42.2		42.2
American Woodmark Corporation
Business Combination [Line Items]
Special termination fee	$ 30.0
Regulatory termination fee	$ 35.0
Acquisition related costs			15.2	$ 15.0	18.7		$ 19.4
American Woodmark Corporation | American Woodmark
Business Combination [Line Items]
Entity shares issued per acquiree share	5.15
Diluted shares outstanding before merger (as a percent)	37.00%
Special termination fee	$ 25.0
Supreme
Business Combination [Line Items]
Expected price of acquisition		$ 520.0
Consideration transferred		527.3
Provisional information, property, plant, and equipment					73.2	$ (0.5)
Property, plant and equipment		115.9	115.4		115.4
Goodwill		204.9	$ 203.4		$ 203.4
Goodwill expected tax deductible amount		$ 180.8

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