Selected Segment Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 1,337.0	$ 1,017.0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	483.0	320.0
Net loss attributed to noncontrolling interest	1.0	1.0
Net Income (Loss) Attributable to Parent	484.0	320.0
Provision for income taxes	139.0	96.0
Depreciation and amortization	32.0	29.0
Stock-based compensation expense	(7.0)	(1.0)
Other operating income (expense) exclusive of product discontinuance charges	(38.0)	0.0
Product line discontinuance charges		(1.0)
Gain (Loss) on Extinguishment of Debt	0.0	11.0
Interest Expense	3.0	5.0
Investment income, net of adjustments	1.0	0.0
Other Nonoperating Income Expense, Net of Debt Extinguishment	(10.0)	1.0
Adjusted EBITDA	636.0	461.0
Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	945.0	686.0
Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		8.0
Siding [Member]
Segment Reporting Information [Line Items]
Net sales	332.0	285.0
Adjusted EBITDA	83.0	90.0
Siding [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	330.0
Siding [Member] | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		0.0
OSB [Member]
Segment Reporting Information [Line Items]
Net sales	744.0	539.0
Adjusted EBITDA	505.0	354.0
OSB [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	406.0	254.0
OSB [Member] | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		0.0
EWP [Member]
Segment Reporting Information [Line Items]
Net sales	170.0	123.0
Adjusted EBITDA	38.0	7.0
EWP [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	144.0	100.0
EWP [Member] | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		8.0
Other [Member]
Segment Reporting Information [Line Items]
Net sales	26.0	18.0
Net Income (Loss) Attributable to Parent	484.0	320.0
Adjusted EBITDA	(6.0)	(5.0)
Other [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	0.0	0.0
Other [Member] | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		0.0
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	(9.0)	(6.0)
Intersegment
Segment Reporting Information [Line Items]
Net sales	(1.0)	0.0
Intersegment | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	(1.0)	0.0
Intersegment | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales	(1.0)	0.0
South America
Segment Reporting Information [Line Items]
Net sales	67.0	53.0
Adjusted EBITDA	25.0	21.0
South America | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	$ 64.0	50.0
South America | Value-add [Member] | LSL [Member]
Segment Reporting Information [Line Items]
Net sales		$ 0.0