Revenue - Schedule of Net Sales by Product Category (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 4,232,494	$ 4,534,264	$ 12,580,186	$ 12,946,468
Lumber and Lumber Sheet Goods
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	1,069,129	1,157,158	3,244,385	3,092,912
Manufactured Products
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	997,633	1,200,440	3,031,813	3,557,391
Windows, Doors and Millwork
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	1,084,692	1,093,278	3,230,525	3,263,358
Specialty Building Products & Services
Entity Wide Information Revenue From External Customer [Line Items]
Net sales	$ 1,081,040	$ 1,083,388	$ 3,073,463	$ 3,032,807