Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Disaggregation of Revenue [Line Items]
Net sales	$ 724	$ 724
Siding
Disaggregation of Revenue [Line Items]
Net sales	402	361
OSB
Disaggregation of Revenue [Line Items]
Net sales	267	313
LPSA
Disaggregation of Revenue [Line Items]
Net sales	52	47
Other
Disaggregation of Revenue [Line Items]
Net sales	2	3
Value-add
Disaggregation of Revenue [Line Items]
Net sales	594	579
Value-add | Siding
Disaggregation of Revenue [Line Items]
Net sales	400	359
Value-add | OSB
Disaggregation of Revenue [Line Items]
Net sales	143	174
Value-add | LPSA
Disaggregation of Revenue [Line Items]
Net sales	52	46
Value-add | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0
Value-add | Siding Solutions
Disaggregation of Revenue [Line Items]
Net sales	407	366
Value-add | Siding Solutions | Siding
Disaggregation of Revenue [Line Items]
Net sales	400	359
Value-add | Siding Solutions | OSB
Disaggregation of Revenue [Line Items]
Net sales	0	0
Value-add | Siding Solutions | LPSA
Disaggregation of Revenue [Line Items]
Net sales	7	7
Value-add | Siding Solutions | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0
Value-add | OSB - Structural Solutions
Disaggregation of Revenue [Line Items]
Net sales	187	213
Value-add | OSB - Structural Solutions | Siding
Disaggregation of Revenue [Line Items]
Net sales	0	0
Value-add | OSB - Structural Solutions | OSB
Disaggregation of Revenue [Line Items]
Net sales	143	174
Value-add | OSB - Structural Solutions | LPSA
Disaggregation of Revenue [Line Items]
Net sales	44	38
Value-add | OSB - Structural Solutions | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0
Commodity | OSB - commodity
Disaggregation of Revenue [Line Items]
Net sales	120	134
Commodity | OSB - commodity | Siding
Disaggregation of Revenue [Line Items]
Net sales	0	0
Commodity | OSB - commodity | OSB
Disaggregation of Revenue [Line Items]
Net sales	120	134
Commodity | OSB - commodity | LPSA
Disaggregation of Revenue [Line Items]
Net sales	0	0
Commodity | OSB - commodity | Other
Disaggregation of Revenue [Line Items]
Net sales	0	0
Other | Other products
Disaggregation of Revenue [Line Items]
Net sales	10	12
Other | Other products | Siding
Disaggregation of Revenue [Line Items]
Net sales	3	2
Other | Other products | OSB
Disaggregation of Revenue [Line Items]
Net sales	5	5
Other | Other products | LPSA
Disaggregation of Revenue [Line Items]
Net sales	0	2
Other | Other products | Other
Disaggregation of Revenue [Line Items]
Net sales	$ 2	$ 3