Revenue Disaggregation of revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 4,553	$ 2,788	$ 2,310
Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	(3)	(1)	(5)
SmartSide Strand siding [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,191	935	816
SmartSide Strand siding [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB - commodity [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,221	631	394
OSB - commodity [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	(1)	(5)
OSB - value-add [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,379	726	528
OSB - value-add [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
LVL [Member]
Disaggregation of Revenue [Line Items]
Net sales	194	141	141
LVL [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
LSL [Member]
Disaggregation of Revenue [Line Items]
Net sales	44	45	50
LSL [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	(3)	0	0
I Joist [Member]
Disaggregation of Revenue [Line Items]
Net sales	309	148	137
I Joist [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Value-add [Member]
Disaggregation of Revenue [Line Items]
Net sales	3,117	1,995	1,672
Value-add [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	(3)	0	0
Plywood [Member]
Disaggregation of Revenue [Line Items]
Net sales	48	25	25
Plywood [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other products [Member]
Disaggregation of Revenue [Line Items]
Net sales	166	137	218
Other products [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Commodity Products [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,269	656	419
Commodity Products [Member] | Intersegment sales
Disaggregation of Revenue [Line Items]
Net sales	0	(1)	(5)
Siding | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,170	959	917
Siding | SmartSide Strand siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,158	915	797
Siding | OSB - commodity [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	9
Siding | OSB - value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	1
Siding | LVL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Siding | LSL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Siding | I Joist [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Siding | Value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,158	915	798
Siding | Plywood [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Siding | Other products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	12	44	110
Siding | Commodity Products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	9
OSB | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	2,387	1,220	777
OSB | SmartSide Strand siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB | OSB - commodity [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,221	632	387
OSB | OSB - value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,152	580	381
OSB | LVL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB | LSL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB | I Joist [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB | Value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,152	580	381
OSB | Plywood [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
OSB | Other products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	14	9	9
OSB | Commodity Products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	1,221	632	387
EWP | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	638	389	396
EWP | SmartSide Strand siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
EWP | OSB - commodity [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	3
EWP | OSB - value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	8
EWP | LVL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	194	141	142
EWP | LSL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	47	45	50
EWP | I Joist [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	309	148	137
EWP | Value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	550	334	337
EWP | Plywood [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	48	25	25
EWP | Other products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	39	30	31
EWP | Commodity Products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	48	25	28
South America | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	265	169	159
South America | SmartSide Strand siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	33	20	19
South America | OSB - commodity [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
South America | OSB - value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	227	146	138
South America | LVL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
South America | LSL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
South America | I Joist [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
South America | Value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	260	166	156
South America | Plywood [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
South America | Other products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	5	3	3
South America | Commodity Products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	95	52	66
Other | SmartSide Strand siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | CanExel siding [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales		14	46
Other | OSB - commodity [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | OSB - value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | LVL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | LSL [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | I Joist [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | Value-add [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | Plywood [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	0	0	0
Other | Other products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	95	52	66
Other | Commodity Products [Member] | Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0	$ 0