Selected Segment Data (Details) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) operatingSegment	Sep. 30, 2022 USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | operatingSegment				3
Net sales	$ 728.0		$ 852.0	$ 1,923.0	$ 3,149.0
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	118.0		226.0	119.0	1,093.0
Net loss attributed to non-controlling interest	0.0		0.0	0.0	1.0
Income from discontinued operations, net of income taxes	0.0		(97.0)	0.0	(196.0)
Income from continuing operations attributed to LP	118.0		129.0	119.0	898.0
Provision for income taxes	44.0		44.0	66.0	284.0
Depreciation and amortization	30.0		32.0	87.0	96.0
Stock-based compensation expense	(2.0)		(2.0)	(9.0)	(15.0)
Loss on impairment attributed to LP	1.0		0.0	1.0	0.0
Other operating income (expense) exclusive of product discontinuance charges	(7.0)		(7.0)	16.0	(17.0)
Business exit charges	1.0		0.0	35.0	0.0
Interest Expense	4.0		3.0	9.0	9.0
Investment income, net of adjustments	4.0		5.0
Investment income	4.0		5.0	10.0	8.0
Other Nonoperating Income Expense, Net of Debt Extinguishment	0.0		1.0	(11.0)	(7.0)
Loss due to settlement	0.0	$ 6.0	4.0	6.0	4.0
Adjusted EBITDA	190.0		200.0	349.0	1,289.0
Intersegment sales
Segment Reporting Information [Line Items]
Net sales	0.0		(1.0)	0.0	(2.0)
Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	560.0		650.0	1,552.0	2,262.0
Siding [Member]
Segment Reporting Information [Line Items]
Net sales	345.0		394.0	996.0	1,083.0
Adjusted EBITDA	71.0		90.0	198.0	251.0
Siding [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	345.0		394.0	996.0	1,083.0
Siding [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	342.0		393.0	989.0	1,079.0
OSB [Member]
Segment Reporting Information [Line Items]
Net sales	335.0		388.0	754.0	1,805.0
Adjusted EBITDA	120.0		113.0	161.0	1,021.0
OSB [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	335.0		388.0	754.0	1,805.0
OSB [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	174.0		205.0	412.0	995.0
South America
Segment Reporting Information [Line Items]
Net sales	45.0		53.0	153.0	190.0
Adjusted EBITDA	6.0		14.0	31.0	65.0
South America | Operating Segments
Segment Reporting Information [Line Items]
Net sales	45.0		53.0	153.0	190.0
South America | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	44.0		53.0	151.0	190.0
Other [Member]
Segment Reporting Information [Line Items]
Net sales	4.0		17.0	21.0	72.0
Adjusted EBITDA	0.0		(7.0)	(15.0)	(19.0)
Other [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	4.0		17.0	21.0	72.0
Other [Member] | Value-add [Member]
Segment Reporting Information [Line Items]
Net sales	0.0		0.0	0.0	0.0
Corporate Segment [Member]
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ (7.0)		$ (11.0)	$ (26.0)	$ (29.0)