Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Net sales	$ 1,337.0	$ 1,017.0
Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	332.0	285.0
OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	744.0	539.0
EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	170.0	123.0
Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	26.0	18.0
South America
Disaggregation of Revenue [Line Items]
Net sales	67.0	53.0
Intersegment
Disaggregation of Revenue [Line Items]
Net sales	(1.0)	0.0
Value-add [Member]
Disaggregation of Revenue [Line Items]
Net sales	945.0	686.0
Value-add [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	330.0
Value-add [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	406.0	254.0
Value-add [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	144.0	100.0
Value-add [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	64.0	50.0
Value-add [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	(1.0)	0.0
Value-add [Member] | SmartSide siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	336.0	291.0
Value-add [Member] | SmartSide siding [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	330.0	282.0
Value-add [Member] | SmartSide siding [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | SmartSide siding [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | SmartSide siding [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | SmartSide siding [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	6.0	9.0
Value-add [Member] | SmartSide siding [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | OSB -Structural Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales		295.0
Value-add [Member] | OSB -Structural Solutions [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales		0.0
Value-add [Member] | OSB -Structural Solutions [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	406.0	254.0
Value-add [Member] | OSB -Structural Solutions [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | OSB -Structural Solutions [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | OSB -Structural Solutions [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	58.0	41.0
Value-add [Member] | OSB -Structural Solutions [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	(1.0)	0.0
Value-add [Member] | I Joist [Member]
Disaggregation of Revenue [Line Items]
Net sales	79.0
Value-add [Member] | I Joist [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	79.0	48.0
Value-add [Member] | LVL [Member]
Disaggregation of Revenue [Line Items]
Net sales	65.0	43.0
Value-add [Member] | LVL [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | LVL [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | LVL [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	65.0	43.0
Value-add [Member] | LVL [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | LVL [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | LVL [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Value-add [Member] | LSL [Member]
Disaggregation of Revenue [Line Items]
Net sales		8.0
Value-add [Member] | LSL [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales		0.0
Value-add [Member] | LSL [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales		0.0
Value-add [Member] | LSL [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales		8.0
Value-add [Member] | LSL [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales		0.0
Value-add [Member] | LSL [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales		0.0
Value-add [Member] | LSL [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	(1.0)	0.0
Commodity
Disaggregation of Revenue [Line Items]
Net sales	345.0	294.0
Commodity | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	334.0	282.0
Commodity | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	11.0	13.0
Commodity | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | South America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB - commodity [Member]
Disaggregation of Revenue [Line Items]
Net sales	334.0	281.0
Commodity | OSB - commodity [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB - commodity [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	334.0	282.0
Commodity | OSB - commodity [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB - commodity [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB - commodity [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | OSB - commodity [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales		0.0
Commodity | Plywood [Member]
Disaggregation of Revenue [Line Items]
Net sales	11.0	13.0
Commodity | Plywood [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | Plywood [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | Plywood [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	11.0	13.0
Commodity | Plywood [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | Plywood [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Commodity | Plywood [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	0.0	0.0
Other Product Types | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales	48.0	37.0
Other Product Types | Other [Member] | Siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	2.0	3.0
Other Product Types | Other [Member] | OSB [Member]
Disaggregation of Revenue [Line Items]
Net sales	4.0	3.0
Other Product Types | Other [Member] | EWP [Member]
Disaggregation of Revenue [Line Items]
Net sales	14.0	11.0
Other Product Types | Other [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Net sales		18.0
Other Product Types | Other [Member] | South America
Disaggregation of Revenue [Line Items]
Net sales	2.0	$ 3.0
Other Product Types | Other [Member] | Intersegment
Disaggregation of Revenue [Line Items]
Net sales	$ 0.0