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Revenue Recognition - Schedule of Revenues Disaggregated by End Market and Product (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Net revenue	$ 2,970.8	$ 2,941.3	$ 2,778.6
Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	100.00%	100.00%	100.00%
Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	100.00%	100.00%	100.00%
Net revenues, Installation
Disaggregation of Revenue [Line Items]
Net revenue	$ 2,763.6	$ 2,761.9	$ 2,605.6
Net revenues, Installation | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	93.00%	94.00%	94.00%
Insulation
Disaggregation of Revenue [Line Items]
Net revenue	$ 1,708.9	$ 1,767.7	$ 1,666.0
Insulation | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	58.00%	60.00%	60.00%
Shower doors, shelving and mirrors
Disaggregation of Revenue [Line Items]
Net revenue	$ 218.8	$ 209.9	$ 191.5
Shower doors, shelving and mirrors | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	7.00%	7.00%	7.00%
Garage doors
Disaggregation of Revenue [Line Items]
Net revenue	$ 172.9	$ 176.1	$ 168.5
Garage doors | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	6.00%	6.00%	6.00%
Waterproofing
Disaggregation of Revenue [Line Items]
Net revenue	$ 160.7	$ 142.2	$ 133.3
Waterproofing | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	5.00%	5.00%	5.00%
Rain gutters
Disaggregation of Revenue [Line Items]
Net revenue	$ 124.9	$ 126.4	$ 119.0
Rain gutters | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	4.00%	4.00%	4.00%
Fireproofing/firestopping
Disaggregation of Revenue [Line Items]
Net revenue	$ 116.6	$ 86.3	$ 73.7
Fireproofing/firestopping | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	4.00%	3.00%	3.00%
Window blinds
Disaggregation of Revenue [Line Items]
Net revenue	$ 76.6	$ 75.8	$ 65.2
Window blinds | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	3.00%	3.00%	2.00%
Other building products
Disaggregation of Revenue [Line Items]
Net revenue	$ 184.2	$ 177.5	$ 188.4
Other building products | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	6.00%	6.00%	7.00%
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 207.2	$ 179.4	$ 173.0
Other | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	7.00%	6.00%	6.00%
Net revenue, Installation
Disaggregation of Revenue [Line Items]
Net revenue	$ 2,763.6	$ 2,761.9	$ 2,605.6
Net revenue, Installation | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	93.00%	94.00%	94.00%
Residential new construction
Disaggregation of Revenue [Line Items]
Net revenue	$ 2,072.1	$ 2,127.3	$ 1,999.4
Residential new construction | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	70.00%	72.00%	72.00%
Repair and remodel
Disaggregation of Revenue [Line Items]
Net revenue	$ 179.4	$ 174.0	$ 159.0
Repair and remodel | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	6.00%	6.00%	6.00%
Commercial
Disaggregation of Revenue [Line Items]
Net revenue	$ 512.1	$ 460.6	$ 447.2
Commercial | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	17.00%	16.00%	16.00%
Other
Disaggregation of Revenue [Line Items]
Net revenue	$ 207.2	$ 179.4	$ 173.0
Other | Revenue from Contract with Customer Benchmark | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Customer risk (as a percent)	7.00%	6.00%	6.00%

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