Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 19	$ 19
Asset Impairment Charges	0	0
Goodwill	19	19	$ 19
Intangible Assets, Net (Excluding Goodwill)	32	45
Amortization of Intangible Assets	(3)	(4)	(5)
Intangible Assets, Net (Excluding Goodwill)	30	32	45
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	3
Impairment of Intangible Assets, Finite-Lived		(9)
Finite-lived Intangible Assets Acquired	$ 1
Maximum | Timber [Member]
Goodwill [Line Items]
Property, Plant and Equipment, Useful Life	25 years
Minimum [Member] | Timber [Member]
Goodwill [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Licensing Agreements [Member]
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	$ 25	28
Amortization of Intangible Assets	(3)	(3)
Intangible Assets, Net (Excluding Goodwill)	23	25	28
Impairment of Intangible Assets, Finite-Lived		0
Finite-lived Intangible Assets Acquired	1
Licensing Agreements [Member] | CANADA
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	69
Trademarks [Member]
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	0	2
Amortization of Intangible Assets	0	0
Intangible Assets, Net (Excluding Goodwill)	0	0	2
Impairment of Intangible Assets, Finite-Lived		(2)
Finite-lived Intangible Assets Acquired	0
Developed Technology Rights
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	7	15
Amortization of Intangible Assets	(1)	(1)
Intangible Assets, Net (Excluding Goodwill)	7	7	15
Impairment of Intangible Assets, Finite-Lived		(7)
Finite-lived Intangible Assets Acquired	0
Siding
Goodwill [Line Items]
Goodwill, Beginning Balance	4	4
Asset Impairment Charges	0	0
Goodwill	4	4	4
OSB
Goodwill [Line Items]
Goodwill, Beginning Balance	16	16
Asset Impairment Charges	0	0
Goodwill	16	$ 16	$ 16
Entreka [Member]
Goodwill [Line Items]
Asset Impairment Charges	$ (9)