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Stockholders' Equity ESPP (Details) shares in Millions | Dec. 31, 2020 shares
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Equity [Abstract] |
Shares available for grant, Employee Stock Purchase Plan | 2,000,000

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- Definition Shares available for grant, Employee Stock Purchase Plan + References No definition available. + Details
Name: | lpx_SharesavailableforgrantEmployeeStockPurchasePlan
Namespace Prefix: | lpx_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_EquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration