Reportable Segment and Geographical Information - Total Assets Disaggregated by Reportable Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	$ 1,058,609	$ 1,127,037
Total assets	6,208,736	6,685,146
Operating Segments
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	1,037,769	1,109,746
Total assets	5,963,949	6,338,034
Operating Segments \| Windows & Doors
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	353,253	377,786
Total assets	2,437,569	2,896,080
Operating Segments \| Siding & Accessories
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	186,335	193,235
Total assets	1,687,914	1,810,815
Operating Segments \| Metal Solutions
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	498,181	538,725
Total assets	1,838,466	1,631,139
Corporate and Other
Segment Reporting Information [Line Items]
Total property, plant and equipment, net	20,840	17,291
Total assets	$ 244,787	$ 347,112

Amount of asset recognized for present right to economic benefit.

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+ Details

Cornerstone Building Brands, Inc. 10-K