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Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2016 shares
Entity Information [Line Items]
Entity Registrant Name	LOUISIANA-PACIFIC CORP
Entity Central Index Key	0000060519
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding	143,748,332

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net sales	$ 504.6	$ 471.7
Operating costs and expenses:
Cost of sales	415.5	427.8
Depreciation and amortization	27.9	26.7
Selling and administrative	42.3	38.7
(Gain) loss on sale or impairment of long-lived assets, net	0.0	0.1
Other operating charges and credits, net	0.0	11.6
Total operating costs and expenses	485.7	504.9
Income (loss) from operations	18.9	(33.2)
Non-operating income (expense):
Interest expense, net of capitalized interest	(8.0)	(7.5)
Interest income	1.8	1.4
Other Nonoperating Income (Expense)	0.5	(2.2)
Other non-operating items	0.5	2.2
Total non-operating income (expense)	(5.7)	(8.3)
Income (loss) from operations before taxes and equity in income of unconsolidated affiliates	13.2	(41.5)
Provision (benefit) for income taxes	4.4	(6.3)
Equity in income of unconsolidated affiliates	(1.5)	(0.7)
Net Income (loss)	$ 10.3	$ (34.5)
Income (loss) per share of common stock (basic and diluted):
Net income (loss) per share - basic	$ 0.07	$ (0.24)
Net income (loss) per share - diluted	$ 0.07	$ (0.24)
Weighted average number of shares outstanding - basic	142.9	142.0
Weighted average number of shares outstanding - diluted	145.2	142.0

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net Income (loss)	$ 10.3	$ (34.5)
Other comprehensive income (loss)
Foreign currency translation adjustments	6.1	(7.8)
Unrealized gain on marketable securities	0.0	0.0
Defined benefit pension plans	0.1	1.6
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Exchange Rate Changes, Net of Tax	(0.8)	0.5
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	0.8	1.0
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	(0.1)	(0.1)
Other	0.0	0.1
Other comprehensive income (loss), net of tax	6.2	(6.1)
Comprehensive income (loss)	$ 16.5	$ (40.6)

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 404.2	$ 434.7
Receivables, net of allowance for doubtful accounts of $1.0 million at March 31, 2016 and December 31, 2015	146.4	96.4
Inventories	250.1	222.0
Prepaid expenses and other current assets	5.9	7.0
Assets Held For Sale	9.0	9.0
Total current assets	815.6	769.1
Timber and timberlands	51.9	53.1
Property, plant and equipment, at cost	2,411.8	2,392.5
Accumulated depreciation	(1,554.5)	(1,530.1)
Net property, plant and equipment	857.3	862.4
Goodwill	9.7	9.7
Notes receivable from asset sales	432.2	432.2
Investments in and Advance to Affiliates	7.2	7.7
Restricted cash	14.4	14.3
Other assets	22.8	23.0
Long-term deferred tax asset	4.5	4.8
Total assets	2,215.6	2,176.3
LIABILITIES AND EQUITY
Current portion of long-term debt	2.1	2.1
Accounts payable and accrued liabilities	161.9	139.6
Current portion of contingency reserves	1.3	1.3
Total current liabilities	165.3	143.0
Long-term debt, excluding current portion	751.8	751.8
Deferred income taxes	85.7	99.5
Contingency reserves, excluding current portion	15.2	15.5
Other long-term liabilities	145.8	149.5
Stockholders' equity:
Common stock, $1 par value, 200,000,000 shares authorized, 153,147,190, and 152,979,708 shares issued	153.1	153.0
Additional paid-in capital	492.7	496.5
Retained earnings	750.8	724.2
Treasury stock, 9,739,602 shares and 9.995,456 shares, at cost	(204.9)	(210.6)
Accumulated comprehensive loss	(139.9)	(146.1)
Total stockholders' equity	1,051.8	1,017.0
Total liabilities and stockholders' equity	$ 2,215.6	$ 2,176.3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 1.0	$ 1.0

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (loss)	$ 10.3	$ (34.5)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	27.9	26.7
Income (Loss) from Equity Method Investments Including Dividends	(0.5)	0.7
(Gain) loss on sale or impairment of long-lived assets, net	0.0	0.1
Other operating charges and credits, net	0.0	11.6
Stock-based compensation related to stock plans	3.0	2.4
Exchange loss on remeasurement	0.1	3.6
Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve	(0.3)	0.5
Product Warranty Payments, Net of Accruals	(3.5)	(3.0)
Pension expense, net of contributions	0.4	2.0
Non-cash interest expense, net	0.4	(0.1)
Other adjustments, net	0.0	0.3
(Increase) decrease in receivables	(47.8)	(30.9)
(Increase) decrease in inventories	(26.9)	(34.2)
(Increase) decrease in prepaid expenses and other current assets	1.1	2.0
Decrease in accounts payable and accrued liabilities	26.0	17.2
Increase (decrease) in deferred income taxes	3.9	(7.0)
Net cash provided by (used in) operating activities	(4.9)	(44.0)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property, plant, and equipment additions	(26.3)	(14.9)
Proceeds from sales of assets	0.0	0.4
Proceeds from (Payments for) Other Financing Activities	0.1	0.0
Net cash used in investing activities	(26.2)	(14.5)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt	(1.1)	(1.4)
Sale of common stock under equity plans	0.1	0.1
Taxes paid related to net share settlement of equity awards	0.9	2.4
Net cash used in financing activities	(1.9)	(3.7)
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	2.5	(2.2)
Net increase (decrease) in cash and cash equivalents	(30.5)	(64.4)
Cash and cash equivalents at beginning of period	434.7	532.7
Cash and cash equivalents at end of period	$ 404.2	$ 468.3

Basis For Presentation	3 Months Ended
Basis For Presentation	Mar. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis for Presentation	BASIS FOR PRESENTATION The accompanying unaudited consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, in the opinion of management, include all adjustments (consisting of normal recurring adjustments) necessary to present fairly, in all material respects, the consolidated financial position, results of operations and cash flows of LP and its subsidiaries for the interim periods presented. Results of operations for interim periods are not necessarily indicative of results to be expected for an entire year. These consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in LP’s Annual Report on Form 10-K for the year ended December 31, 2015.

Stock-Based Compensation

3 Months Ended

Mar. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

STOCK-BASED COMPENSATION

LP has a Management Incentive Plan (MIP) which is administered by the Compensation Committee of the Board of Directors. The Compensation Committee authorizes the grants of restricted stock, restricted stock units, performance share awards payable in stock upon the attainment of specified performance goals, stock options, stock settled stock appreciation rights (SSAR), other stock-based awards and cash-based awards at the discretion of the Committee. A detailed discussion of this is presented in Note 15 to the consolidated financial statements included in LP's Annual Report on Form 10-K for the fiscal year ended December 31, 2015. As of March 31, 2016, 3.1 million shares were available for grant under the plan.



Dollar amounts in millions	March 31, 2016		March 31, 2015
Total stock-based compensation expense (costs of sales and general and administrative)	$	3.0	$	2.4
Income tax provision related to stock-based compensation	$	1.9	$	—
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$	0.9	$	2.4

At March 31, 2016, $18.3 million of compensation cost related to unvested restricted performance shares, restricted stock and SSARs attributable to future service had not yet been recognized. This amount will be recognized in expense over a weighted-average period of 1.78 years.

LP adopted Accounting Standards Update (ASU) No. 2016-09, Improvements to Employee Share-based Payment Accounting as of January 1, 2016. This standard is required to be adopted using the modified retrospective approach. As such, LP recorded a cumulative-effect adjustment of $16.3 million during the quarter ended March 31, 2016 to increase LP's December 31, 2015 retained earnings and increase LP's December 31, 2015 deferred tax asset balance. Additionally, ASU 2016-09 addresses the presentation of excess tax benefits and employee taxes paid on the statement of cash flows. LP is now required to present excess tax benefits as an operating activity (combined with other income tax cash flows) on the statement of cash flows rather than as a financing activity, and LP has adopted this change prospectively. ASU 2016-09 also requires the presentation of employee taxes as a financing activity on the statement of cash flows, which is where LP has previously classified this item.

Grants of awards

During the first three months of 2016, the Company granted 90,444 performance units at an average grant date fair value of $20.45 per share, 509,127 stock settled stock appreciation rights at an average grant date fair value of $6.99 per share and 409,506 restricted stock awards (shares or units) at an average grant date fair value of $15.75 per share.

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASUREMENTS LP estimated its Senior Notes maturing in 2020 to have a fair value of $364.5 million at March 31, 2016 and $366.2 million at December 31, 2015 based upon market quotations. Carrying amounts reported on the balance sheet for cash and cash equivalents, receivables and accounts payable approximate fair value due to the short-term maturity of these items.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Earnings per Share

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Earnings per Share

EARNINGS PER SHARE

Basic earnings per share are based on the weighted-average number of shares of common stock outstanding. Diluted earnings per share are based upon the weighted-average number of shares of common stock outstanding plus all potentially dilutive securities that were assumed to be converted into common shares at the beginning of the period under the treasury stock method. This method requires that the effect of potentially dilutive common stock equivalents (stock options, SSARs, performance shares, incentive shares and warrants) be excluded from the calculation of diluted earnings per share for the periods in which LP recognizes losses from continuing operations or at such time that the exercise prices of such awards are in excess of the weighted average market price of LP's common stock during these periods because the effect is anti-dilutive.



Dollar and share amounts in millions, except per share amounts	Three Months Ended March 31,
	2016		2015
Numerator:
Net income (loss)	$	10.3	$	(34.5	)
Denominator:
Denominator for basic earnings per share:
Weighted average common shares outstanding	142.9		142.0
Effect of dilutive securities:
Dilutive effect of stock warrants	0.3		—
Dilutive effect of employee stock plans	2.0		—
Dilutive potential common shares	2.3		—
Denominator for diluted earnings per share:
Adjusted weighted average shares	145.2		142.0
Basic earnings per share:
Net income (loss) per share	$	0.07	$	(0.24	)
Diluted earnings per share:
Net income (loss) per share	$	0.07	$	(0.24	)

For the three months ended March 31, 2016, stock options, warrants and SSARs relating to approximately 2.6 million shares of LP common stock were considered not in-the-money for purposes of LP's earnings per share calculation. For the three months ended March 31, 2015, stock options, warrants and SSARs relating to approximately 5.2 million shares of LP common stock were considered anti-dilutive for purposes of LP's earnings per share calculation due to LP's loss position from continuing operations.

At March 31, 2016, outstanding warrants were exercisable to purchase approximately 227,129 shares.

Receivables

3 Months Ended

Mar. 31, 2016

Receivables [Abstract]

Receivables

RECEIVABLES

Receivables consist of the following:



Dollar amounts in millions	March 31, 2016			December 31, 2015
Trade receivables	$	129.7		$	82.6
Income tax receivable	1.6			2.0
Other receivables	16.1			12.8
Allowance for doubtful accounts	(1.0		)	(1.0		)
Total	$	146.4		$	96.4

Other receivables at March 31, 2016 and December 31, 2015 primarily consist of non-income tax receivables, vendor rebates, interest receivables and other miscellaneous receivables.

Inventories

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Inventories

INVENTORIES

Inventories are valued at the lower of cost or market. Inventory cost includes materials, labor and operating overhead. The major types of inventories are as follows (work in process is not material):



Dollar amounts in millions	March 31, 2016		December 31, 2015
Logs	$	72.9	$	58.6
Other raw materials	21.9		21.6
Semi-finished inventory	17.2		18.5
Finished products	138.1		123.3
Total	$	250.1	$	222.0

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES Accounting standards state that companies account for income taxes using the asset and liability approach, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax basis of assets and liabilities. This method also requires the recognition of future tax benefits, such as net operating loss carryforwards and other tax credits. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. Valuation allowances are recorded as necessary to reduce deferred tax assets to the amount thereof that is more likely than not to be realized. The likelihood of realizing deferred tax assets is evaluated by, among other things, estimating future taxable income, considering the future reversal of existing deferred tax liabilities to which the deferred tax assets may be applied and assessing the impact of tax planning strategies. For interim periods, accounting standards require that income tax expense be determined by applying the estimated annual effective income tax rate to year-to-date results unless this method does not result in a reliable estimate of year-to-date income tax expense. An exception is provided for situations in which an enterprise anticipates a loss in a separate jurisdiction for which no tax benefit can be recognized. For the three months ended March 31, 2015, LP's overall estimated annual effective tax rate was computed by excluding anticipated losses in Canada for which no deferred tax asset was expected to be recognizable due to the need for valuation allowances. Tax benefit for the period was then computed using the rate so derived applied to year-to-date pre-tax losses excluding those from Canada, and no additional Canadian tax benefit was added. Each period the income tax accrual is adjusted to the latest estimate and the difference from the previously accrued year-to-date balance is adjusted to the current quarter. Changes in the profitability estimates in various jurisdictions will impact our quarterly effective income tax rates. For the first three months of 2016, the primary differences between the U.S. statutory rate of 35% and the effective rate applicable to LP’s continuing operations relate to foreign tax rates, changes in Canadian valuation allowances and a charge for excess tax deficiencies in connection with LP's stock-based compensation plans. For the first three months of 2015, the primary differences between the U.S. statutory rate of 35% and the effective rate applicable to LP’s continuing operations relates to state income taxes, Canadian valuation allowances and a reduction in the reserve for unrecognized tax benefits. LP periodically reviews the need for valuation allowances against deferred tax assets and recognizes these deferred tax assets to the extent that the realization is more likely than not. As part of our review, we consider all positive and negative evidence, including earnings history, the future reversal of deferred tax liabilities, and the relevant expirations of carry forwards. LP believes that the valuation allowances provided are appropriate. If in future periods, our earnings estimates differ from the estimates used to establish these valuation allowances or other objective positive or negative evidence arises, LP may be required to record an adjustment resulting in an impact on tax expense (benefit) for that period.

Other Operating Credits and Charges, Net	3 Months Ended
Other Operating Credits and Charges, Net	Mar. 31, 2016
Other Operating Credits And Charges, Net [Abstract]
Other Operating Credits and Charges Net [Table Text Block]	OTHER OPERATING CHARGES AND CREDITS During the first quarter of 2015, LP was notified by the Ministry of Forestry in Quebec that LP's forest license associated with an indefinitely curtailed OSB mill in Quebec has been terminated. Based upon this notification, LP was required to write off the remaining unamortized value associated with this intangible forest license of $11.6 million.

Legal and Environmental Matters	3 Months Ended
Legal and Environmental Matters	Mar. 31, 2016
Legal and Environmental Matters [Abstract]
Legal and Environmental Matters	LEGAL AND ENVIRONMENTAL MATTERS Certain environmental matters and legal proceedings are discussed below. Environmental Matters LP maintains a reserve for undiscounted estimated environmental loss contingencies. This reserve is primarily for estimated future costs of remediation of hazardous or toxic substances at numerous sites currently or previously owned by the Company. LP’s estimates of its environmental loss contingencies are based on various assumptions and judgments, the specific nature of which varies in light of the particular facts and circumstances surrounding each environmental loss contingency. These estimates typically reflect assumptions and judgments as to the probable nature, magnitude and timing of required investigation, remediation and/or monitoring activities and the probable cost of these activities, and in some cases reflect assumptions and judgments as to the obligation or willingness and ability of third parties to bear a proportionate or allocated share of the cost of these activities. Due to the numerous uncertainties and variables associated with these assumptions and judgments, and the effects of changes in governmental regulation and environmental technologies, both the precision and reliability of the resulting estimates of the related contingencies are subject to substantial uncertainties. LP regularly monitors its estimated exposure to environmental loss contingencies and, as additional information becomes known, may change its estimates significantly. However, no estimate of the range of any such change can be made at this time. Other Proceedings LP and its subsidiaries are parties to other legal proceedings. Based on the information currently available, management believes that the resolution of such proceedings will not have a material adverse effect on the financial position, results of operations, cash flows or liquidity of LP.

Selected Segment Data

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Selected Segment Data

SELECTED SEGMENT DATA

LP operates in four segments: North America Oriented Strand Board (OSB), Siding, Engineered Wood Products (EWP) and South America. LP’s business units have been aggregated into these four segments based upon the similarity of economic characteristics, customers and distribution methods. LP’s results of operations are summarized below for each of these segments separately as well as for the “other” category which comprises other products that are not individually significant. Segment information was prepared in accordance with the same accounting principles as those described in Note 1 of the Notes to the financial statements included in LP’s Annual Report on Form 10-K for the year ended December 31, 2015.



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Net sales:
OSB	$	217.0		$	190.2
Siding	181.3			173.5
EWP	71.8			64.8
South America	30.5			35.9
Other	6.1			7.3
Intersegment sales	(2.1		)	—
	$	504.6		$	471.7
Operating profit (loss):
OSB	$	15.3		$	(28.4	)
Siding	26.9			32.9
EWP	(2.5		)	(4.1		)
South America	5.1			2.4
Other	(0.4		)	(0.9		)
Other operating charges and credits, net	—			(11.6		)
Gain (loss) on sale or impairment of long-lived assets	—			(0.1		)
General corporate and other expenses, net	(24.0		)	(22.7		)
Other non-operating income (expense)	0.5			(2.2		)
Investment income	1.8			1.4
Interest expense, net of capitalized interest	(8.0		)	(7.5		)
Income (loss) from operations before taxes	14.7			(40.8		)
Provision (benefit) for income taxes	4.4			(6.3		)
Income (loss) from operations	$	10.3		$	(34.5	)

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

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+ Details

Potential Impairments	3 Months Ended
Potential Impairments	Mar. 31, 2016
Asset Impairment Charges [Abstract]
Potential Impairments	POTENTIAL IMPAIRMENTS LP continues to review certain operations and investments for potential impairments. LP’s management currently believes it has adequate support for the carrying value of each of these operations and investments based upon the anticipated cash flows that result from estimates of future demand, pricing and production costs assuming certain levels of planned capital expenditures. LP also reviews from time to time possible dispositions of various assets in light of current and anticipated economic and industry conditions, its strategic plan and other relevant circumstances. Because a determination to dispose of particular assets can require management to make assumptions regarding the transaction structure of the disposition and to estimate the net sales proceeds, which may be less than previous estimates of undiscounted future net cash flows, LP may be required to record impairment charges in connection with decisions to dispose of assets.

Defined Benefit Pension Plans

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Compensation and Employee Benefit Plans

DEFINED BENEFIT PENSION PLANS

The following table sets forth the net periodic pension cost for LP’s defined benefit pension plans during the three months ended March 31, 2016 and 2015. The net periodic pension cost included the following components:



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Service cost	$	1.2		$	1.0
Interest cost	3.3			3.4
Expected return on plan assets	(3.3		)	(3.8		)
Amortization of prior service cost	0.1			0.1
Amortization of net loss	1.4			1.8
Net periodic pension cost	$	2.7		$	2.5

During the three months ended March 31, 2016 and 2015, LP recognized $2.7 million and $2.5 million of pension expense for all of LP's defined benefit pension plans.

During the three months ended March 31, 2016, LP made $2.0 million in pension contributions to its defined benefit pension plans. LP expects to contribute between $6.0 million and $8.0 million to its defined benefit pension plans in 2016.

Product Warranty

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Guarantees and Indemnifications

LP provides warranties on the sale of most of its products and records an accrual for estimated future claims. Such accruals are based upon historical experience and management’s estimate of the level of future claims. The activity in warranty reserves for the three months ended March 31, 2016 and 2015 are summarized in the following table:



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Beginning balance	$	21.0		$	31.4
Accrued to expense	0.1			0.1
Foreign currency translation	0.6			(1.3		)
Payments made	(3.6		)	(3.1		)
Total warranty reserves	18.1			27.1
Current portion of warranty reserves	(6.0		)	(12.0		)
Long-term portion of warranty reserves	$	12.1		$	15.1

LP continues to monitor warranty and other claims associated with these products and believes as of March 31, 2016 that the reserves associated with these matters are adequate. However, it is possible that additional charges may be required in the future.

The current portion of the warranty reserve is included in the caption “Accounts payable and accrued liabilities” and the long-term portion is included in the caption “Other long-term liabilities” on LP’s Consolidated Balance Sheets.

Other Comprehensive Income Other Comprehensive Income

3 Months Ended

Mar. 31, 2016

Other Comprehensive Income [Abstract]

Comprehensive Income (Loss) Note

OTHER COMPREHENSIVE INCOME

Other comprehensive income activity, net of tax, is provided in the following table for the three months ended March 31, 2016:



Dollar amounts in millions	Foreign currency translation adjustments			Pension adjustments			Unrealized gain (loss) on investments		Other			Total
Balance at December 31, 2015	$	(55.1	)	$	(93.3	)	$	3.3	$	(1.0	)	$	(146.1	)
Other comprehensive income before reclassifications	6.1			(0.8		)	—		—			5.3
Amounts reclassified from accumulated comprehensive income	—			0.9			—		—			0.9
Net current-period other comprehensive income	6.1			0.1			—		—			6.2
Balance at March 31, 2016	$	(49.0	)	$	(93.2	)	$	3.3	$	(1.0	)	$	(139.9	)

Other comprehensive income activity, net of tax, is provided in the following table for the three months ended March 31, 2015:



Dollar amounts in millions	Foreign currency translation adjustments			Pension adjustments			Unrealized gain (loss) on investments		Other			Total
Balance at December 31, 2014	$	(33.7	)	$	(99.0	)	$	2.6	$	(1.2	)	$	(131.3	)
Other comprehensive income (loss) before reclassifications	(7.8		)	0.5			—		0.1			(7.2		)
Amounts reclassified from accumulated comprehensive income	—			1.1			—		—			1.1
Net current-period other comprehensive income (loss)	(7.8		)	1.6			—		0.1			(6.1		)
Balance at March 31, 2015	$	(41.5	)	$	(97.4	)	$	2.6	$	(1.1	)	$	(137.4	)

Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2016 and March 31, 2015 are summarized, in millions of dollars, in the following table:



	Amount reclassified from accumulated comprehensive loss				Affected line item in the statement where net income (loss) is presented
	Three Months Ended March 31,
Details about accumulated other comprehensive income components	2016		2015
Amortization of defined benefit pension plans
Prior service cost	$	0.1	$	0.1	^(a)
Actuarial loss	1.4		1.8		^(a)
	1.5		1.9		Total before tax
	0.6		0.8		Tax benefit
Total reclassifications	$	0.9	$	1.1	Net of tax

____________

^(a)These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 12 for additional details. The net periodic pension cost is included in Cost of sales and Selling and administrative expense in the Consolidated Statements of Income.

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Glossary Reclassification Adjustments
-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Recent and Prospective Accounting Pronouncements (Notes)	3 Months Ended
	Mar. 31, 2016
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	RECENT AND PROSPECTIVE ACCOUNTING PRONOUNCEMENTS In March 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-02, Leases (Topic 842), which supersedes the lease accounting requirements in Accounting Standards Codification (ASC) Topic 840, Leases. The new standard requires entities to recognize, separately from each other, an asset for its right to use (ROU) the underlying asset equal to the liability for its finance and operating lease obligations. Further, the entity is required to present separately the current and non current portion of the ROU asset and corresponding lease liability. The new standard is effective on January 1, 2019. LP is currently evaluating the effect that adopting this new accounting guidance will have on its consolidated results of operations and financial position. In March 2016, FASB issued ASU No. 2016-09, Improvements to Employee Share-based Payment Accounting. This ASU simplifies the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. This ASU requires that excess tax benefits and deficiencies be recognized as income tax benefit or expense in the income statement, and therefore, the Company anticipates increased income tax expense volatility after adoption of this ASU. The new standard is effective for annual reporting periods beginning after December 15, 2016, including interim periods within those annual reporting periods. Early adoption will be permitted in any interim or annual period for which financial statements have not yet been issued or have not been made available for issuance.

- Definition

The entire disclosure of changes in accounting principles, including adoption of new accounting pronouncements, that describes the new methods, amount and effects on financial statement line items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6507316

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Direct Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6510796

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-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6515603

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-Name Accounting Standards Codification
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-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]



Dollar amounts in millions	March 31, 2016		March 31, 2015
Total stock-based compensation expense (costs of sales and general and administrative)	$	3.0	$	2.4
Income tax provision related to stock-based compensation	$	1.9	$	—
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$	0.9	$	2.4

Earnings per Share (Tables) (Tables)

3 Months Ended

Mar. 31, 2016

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]



Dollar and share amounts in millions, except per share amounts	Three Months Ended March 31,
	2016		2015
Numerator:
Net income (loss)	$	10.3	$	(34.5	)
Denominator:
Denominator for basic earnings per share:
Weighted average common shares outstanding	142.9		142.0
Effect of dilutive securities:
Dilutive effect of stock warrants	0.3		—
Dilutive effect of employee stock plans	2.0		—
Dilutive potential common shares	2.3		—
Denominator for diluted earnings per share:
Adjusted weighted average shares	145.2		142.0
Basic earnings per share:
Net income (loss) per share	$	0.07	$	(0.24	)
Diluted earnings per share:
Net income (loss) per share	$	0.07	$	(0.24	)

Receivables (Tables)

3 Months Ended

Mar. 31, 2016

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Receivables consist of the following:



Dollar amounts in millions	March 31, 2016			December 31, 2015
Trade receivables	$	129.7		$	82.6
Income tax receivable	1.6			2.0
Other receivables	16.1			12.8
Allowance for doubtful accounts	(1.0		)	(1.0		)
Total	$	146.4		$	96.4

Inventories (Tables)

3 Months Ended

Mar. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

The major types of inventories are as follows (work in process is not material):



Dollar amounts in millions	March 31, 2016		December 31, 2015
Logs	$	72.9	$	58.6
Other raw materials	21.9		21.6
Semi-finished inventory	17.2		18.5
Finished products	138.1		123.3
Total	$	250.1	$	222.0

Selected Segment Data (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Net sales:
OSB	$	217.0		$	190.2
Siding	181.3			173.5
EWP	71.8			64.8
South America	30.5			35.9
Other	6.1			7.3
Intersegment sales	(2.1		)	—
	$	504.6		$	471.7
Operating profit (loss):
OSB	$	15.3		$	(28.4	)
Siding	26.9			32.9
EWP	(2.5		)	(4.1		)
South America	5.1			2.4
Other	(0.4		)	(0.9		)
Other operating charges and credits, net	—			(11.6		)
Gain (loss) on sale or impairment of long-lived assets	—			(0.1		)
General corporate and other expenses, net	(24.0		)	(22.7		)
Other non-operating income (expense)	0.5			(2.2		)
Investment income	1.8			1.4
Interest expense, net of capitalized interest	(8.0		)	(7.5		)
Income (loss) from operations before taxes	14.7			(40.8		)
Provision (benefit) for income taxes	4.4			(6.3		)
Income (loss) from operations	$	10.3		$	(34.5	)

Defined Benefit Pension Plans (Tables)

3 Months Ended

Mar. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic pension cost included the following components:



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Service cost	$	1.2		$	1.0
Interest cost	3.3			3.4
Expected return on plan assets	(3.3		)	(3.8		)
Amortization of prior service cost	0.1			0.1
Amortization of net loss	1.4			1.8
Net periodic pension cost	$	2.7		$	2.5

Product Warranty (Tables)

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The activity in warranty reserves for the three months ended March 31, 2016 and 2015 are summarized in the following table:



	Three Months Ended March 31,
Dollar amounts in millions	2016			2015
Beginning balance	$	21.0		$	31.4
Accrued to expense	0.1			0.1
Foreign currency translation	0.6			(1.3		)
Payments made	(3.6		)	(3.1		)
Total warranty reserves	18.1			27.1
Current portion of warranty reserves	(6.0		)	(12.0		)
Long-term portion of warranty reserves	$	12.1		$	15.1

Other Comprehensive Income Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2016

Accumulated Other Comprehensive Income [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Other comprehensive income activity, net of tax, is provided in the following table for the three months ended March 31, 2015:



Dollar amounts in millions	Foreign currency translation adjustments			Pension adjustments			Unrealized gain (loss) on investments		Other			Total
Balance at December 31, 2014	$	(33.7	)	$	(99.0	)	$	2.6	$	(1.2	)	$	(131.3	)
Other comprehensive income (loss) before reclassifications	(7.8		)	0.5			—		0.1			(7.2		)
Amounts reclassified from accumulated comprehensive income	—			1.1			—		—			1.1
Net current-period other comprehensive income (loss)	(7.8		)	1.6			—		0.1			(6.1		)
Balance at March 31, 2015	$	(41.5	)	$	(97.4	)	$	2.6	$	(1.1	)	$	(137.4	)

Other comprehensive income activity, net of tax, is provided in the following table for the three months ended March 31, 2016:



Dollar amounts in millions	Foreign currency translation adjustments			Pension adjustments			Unrealized gain (loss) on investments		Other			Total
Balance at December 31, 2015	$	(55.1	)	$	(93.3	)	$	3.3	$	(1.0	)	$	(146.1	)
Other comprehensive income before reclassifications	6.1			(0.8		)	—		—			5.3
Amounts reclassified from accumulated comprehensive income	—			0.9			—		—			0.9
Net current-period other comprehensive income	6.1			0.1			—		—			6.2
Balance at March 31, 2016	$	(49.0	)	$	(93.2	)	$	3.3	$	(1.0	)	$	(139.9	)

Disclosure of Reclassification Amount [Text Block]

Reclassifications from accumulated other comprehensive loss for the three months ended March 31, 2016 and March 31, 2015 are summarized, in millions of dollars, in the following table:



	Amount reclassified from accumulated comprehensive loss				Affected line item in the statement where net income (loss) is presented
	Three Months Ended March 31,
Details about accumulated other comprehensive income components	2016		2015
Amortization of defined benefit pension plans
Prior service cost	$	0.1	$	0.1	^(a)
Actuarial loss	1.4		1.8		^(a)
	1.5		1.9		Total before tax
	0.6		0.8		Tax benefit
Total reclassifications	$	0.9	$	1.1	Net of tax

____________

- Definition

The entire disclosure for any adjustments made during the period to avoid double counting in comprehensive income items displayed as part of net income that also had been displayed as part of other comprehensive income in that period or earlier periods. These adjustments include reclassifications to net income of items in accumulated comprehensive income, such as deferred gains or losses on qualifying hedges when hedged item reported in net income, holding gains or losses on available-for-sale securities transferred into trading category, unrealized holding gains or losses on debt securities transferred from held-to-maturity category into available-for-sale category and accumulated translation adjustment attributable to foreign subsidiary or investment in foreign entity upon sale or liquidation.

+ References + Details

Stock-Based Compensation (Details) - USD ($)	3 Months Ended
Stock-Based Compensation (Details) - USD ($)	Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 18,300,000
Payments Related to Tax Withholding for Share-based Compensation	900,000	$ 2,400,000
Stock-based compensation related to stock plans	3,000,000	2,400,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	$ 1,900,000	$ 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition	1 year 9 months 11 days
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 16,300,000
Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 20.45
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	90,444
Options and Ssars [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value	$ 6.99
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	509,127
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 15.75
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	409,506

Fair Value Measurements (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Senior Secure Note Maturing 2020 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure	$ 364.5	$ 366.2

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (loss)	$ 10.3	$ (34.5)
Weighted average number of shares outstanding - basic	142,900,000	142,000,000
Dilutive effect of stock warrants	300,000	0
Dilutive effect of employee stock plans	2,000,000	0
Incremental Common Shares Attributable to Dilutive Effect, Total	2,300,000	0
Weighted average number of shares outstanding - diluted	145,200,000	142,000,000
Net income (loss) per share - basic	$ 0.07	$ (0.24)
Net income (loss) per share - diluted	$ 0.07	$ (0.24)
Antidilutive securities excluded from computation of earnings per share	2,600,000	5,200,000
Warrants outstanding	227,129

Receivables (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Receivables [Abstract]
Trade receivables	$ 129.7	$ 82.6
Income tax receivable	1.6	2.0
Other receivables	16.1	12.8
Allowance for doubtful accounts	(1.0)	(1.0)
Accounts Receivable, Net, Current	$ 146.4	$ 96.4

Inventories (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Logs	$ 72.9	$ 58.6
Semi-finished inventory	17.2	18.5
Other Raw Materials	21.9	21.6
Finished Products	138.1	123.3
Total	$ 250.1	$ 222.0

Income Taxes (Details)	3 Months Ended
Income Taxes (Details)	Mar. 31, 2016	Mar. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%

Other Operating Credits and Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Other Operating Credits And Charges, Net [Abstract]
Other operating charges and credits, net	$ 0.0	$ 11.6

Selected Segment Data (Details) - USD ($) $ in Millions	3 Months Ended
Selected Segment Data (Details) - USD ($) $ in Millions	Mar. 31, 2016	Mar. 31, 2015
Segment Reporting Information [Line Items]
Net sales:	$ 504.6	$ 471.7
Operating profit (loss):	18.9	(33.2)
Other operating charges and credits, net	0.0	(11.6)
(Gain) loss on sale or impairment of long-lived assets, net	0.0	0.1
Other Selling, General and Administrative Expense	(24.0)	(22.7)
Other Nonoperating Expense	(0.5)	(2.2)
Interest income	1.8	1.4
Interest expense, net of capitalized interest	(8.0)	(7.5)
Loss from operations before taxes	14.7	(40.8)
Provision (benefit) for income taxes	4.4	(6.3)
Net loss	10.3	(34.5)
OSB [Member]
Segment Reporting Information [Line Items]
Net sales:	217.0	190.2
Operating profit (loss):	15.3	(28.4)
Siding [Member]
Segment Reporting Information [Line Items]
Net sales:	181.3	173.5
Operating profit (loss):	26.9	32.9
Engineered Wood Products [Member]
Segment Reporting Information [Line Items]
Net sales:	71.8	64.8
Operating profit (loss):	(2.5)	(4.1)
South America [Member]
Segment Reporting Information [Line Items]
Net sales:	30.5	35.9
Operating profit (loss):	5.1	2.4
Other [Member]
Segment Reporting Information [Line Items]
Net sales:	6.1	7.3
Operating profit (loss):	(0.4)	(0.9)
Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Net sales:	$ (2.1)	$ 0.0

Defined Benefit Pension Plans (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2016

Mar. 31, 2015

Defined Benefit Plan Disclosure [Line Items]

Pension Expense

$ 2.7

$ 2.5

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

Service cost

1.2

1.0

Interest cost

3.3

3.4

Expected return on plan assets

(3.3)

(3.8)

Defined Benefit Plan, Amortization of Prior Service Cost (Credit)

^[1]

0.1

Defined Benefit Plan, Amortization of Gains (Losses)

^[1]

1.4

1.8

Net periodic pension cost

2.7

$ 2.5

Pension Contributions

2.0

Minimum [Member]

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year

6.0

Maximum [Member]

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year

$ 8.0

[1]	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 12 for additional details. The net periodic pension cost is included in Cost of sales and Selling and administrative expense in the Consolidated Statements of Income.

Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended
Product Warranty (Details) - USD ($) $ in Millions	Mar. 31, 2016	Mar. 31, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 21.0	$ 31.4
Accrued to expense	0.1	0.1
Foreign currency translation	0.6	(1.3)
Payments made	(3.6)	(3.1)
Total warranty reserves	18.1	27.1
Current portion of warranty reserves	(6.0)	(12.0)
Long-term portion of warranty reserves	$ 12.1	$ 15.1

Other Comprehensive Income (Details) - USD ($)
$ in Millions

3 Months Ended

Mar. 31, 2016

Mar. 31, 2015

Dec. 31, 2015

Dec. 31, 2014

Accumulated Other Comprehensive Income [Line Items]

Foreign Currency Translation Adjustment, Net of Tax

$ (49.0)

$ (41.5)

$ (55.1)

$ (33.7)

Foreign currency translation adjustments

6.1

(7.8)

Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Foreign Exchange Rate Changes, Net of Tax

(0.8)

0.5

Pension and Other Postretirement Benefit Plans, Net of Tax

(93.2)

(97.4)

(93.3)

(99.0)

Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax

0.9

1.1

Defined benefit pension plans

0.1

1.6

Available-for-sale Securities Adjustment, Net of Tax

3.3

2.6

3.3

2.6

Unrealized gain on marketable securities

0.0

Other, Net of Tax

(1.0)

(1.1)

(1.0)

(1.2)

Other

0.0

0.1

Other comprehensive income

5.3

(7.2)

Other comprehensive income (loss), net of tax

6.2

(6.1)

Accumulated comprehensive loss

(139.9)

(137.4)

$ (146.1)

$ (131.3)

Defined Benefit Plan, Amortization of Prior Service Cost (Credit)

^[1]

0.1

Defined Benefit Plan, Amortization of Gains (Losses)

^[1]

1.4

1.8

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax

1.5

1.9

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax

0.6

0.8

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Net of Tax

$ 0.9

$ 1.1

[1]	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 12 for additional details. The net periodic pension cost is included in Cost of sales and Selling and administrative expense in the Consolidated Statements of Income.