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Other Operating Credits and Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Other Operating Credits And Charges, Net [Abstract]
Standard and Extended Product Warranty Accrual, Period Increase (Decrease)	$ 2.0	$ 3.4	$ 10.9	$ 5.4	$ 10.9
Other operating credits and charges, net	$ 2.0		$ 11.4	$ 5.4	$ 11.4

X

- Definition

Non Cash Other Operating Charges And Credits

+ References

No definition available.

+ Details

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Namespace Prefix:	lpx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Other Operating Credits And Charges [Abstract]

+ References

No definition available.

+ Details

Name:	lpx_OtherOperatingCreditsAndChargesNetAbstract
Namespace Prefix:	lpx_
Data Type:	xbrli:stringItemType
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X

- Definition

Amount of increase (decrease) in the standard and extended product warranty liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

+ Details

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Period Type:	duration