Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 25	$ 30
Asset Impairment Charges	(5)	(5)
Goodwill	19	25
Intangible Assets, Net (Excluding Goodwill)	56	61
Amortization of Intangible Assets	(6)	(5)
Intangible Assets, Net (Excluding Goodwill)	50	56
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 5
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)	$ 34	38
Amortization of Intangible Assets	(3)	(4)
Intangible Assets, Net (Excluding Goodwill)	31	34
Licensing Agreements [Member] \| CANADA
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	91
Technology-Based Intangible Assets [Member]
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	19	20
Amortization of Intangible Assets	(2)	(1)
Intangible Assets, Net (Excluding Goodwill)	17	19
Trademarks [Member]
Goodwill [Line Items]
Intangible Assets, Net (Excluding Goodwill)	3	3
Amortization of Intangible Assets	0	0
Intangible Assets, Net (Excluding Goodwill)	2	3
Siding
Goodwill [Line Items]
Goodwill, Beginning Balance	4	4
Asset Impairment Charges	0	0
Goodwill	4	4
OSB
Goodwill [Line Items]
Goodwill, Beginning Balance	16	16
Asset Impairment Charges	0	0
Goodwill	16	16
Other
Goodwill [Line Items]
Goodwill, Beginning Balance	5	10
Asset Impairment Charges	(5)	(5)
Goodwill	0	5
Entreka [Member]
Goodwill [Line Items]
Asset Impairment Charges	$ (5)	(5)
Other Reporting Units
Goodwill [Line Items]
Asset Impairment Charges		$ 0

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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