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Revenue - Net Sales by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 3,941,190	$ 4,232,494	$ 11,832,750	$ 12,580,186
Manufactured Products
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	868,363	1,014,658	2,691,517	3,075,489
Windows, Doors and Millwork
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	989,916	1,086,981	2,962,268	3,238,405
Specialty Building Products and Services
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	1,087,272	1,049,698	3,050,015	2,963,801
Lumber and Lumber Sheet Goods
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 995,639	$ 1,081,157	$ 3,128,950	$ 3,302,491

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