Louisiana-Pacific (LPX) 10-Q 4 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - Jun. 30, 2015 - shares	Total
Entity Information [Line Items]
Entity Registrant Name	LOUISIANA-PACIFIC CORP
Entity Central Index Key	60,519
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding	142,674,258

Consolidated Statement of Incom

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net sales	$ 493	$ 518.5	$ 964.7	$ 963.2
Operating costs and expenses:
Cost of sales	443.4	461.5	871.2	849.9
Depreciation and amortization	25.3	24.9	52	50.5
Selling and administrative	37.9	35.9	76.6	76.8
(Gain) loss on sale or impairment of long-lived assets, net	0.5	(0.5)	0.6	(0.5)
Other operating charges and credits, net	0	0.6	11.6	0.6
Total operating costs and expenses	507.1	522.4	1,012	977.3
Loss from operations	(14.1)	(3.9)	(47.3)	(14.1)
Non-operating income (expense):
Interest expense, net of capitalized interest	(7.2)	(7.4)	(14.7)	(15.1)
Interest income	1	1.7	2.4	3.5
Other non-operating items	0.4	3.8	(1.8)	(0.5)
Total non-operating income (expense)	(5.8)	(1.9)	(14.1)	(12.1)
Loss from operations before taxes and equity in income of unconsolidated affiliates	(19.9)	(5.8)	(61.4)	(26.2)
Provision (benefit) for income taxes	1	(6.7)	(5.3)	(12.3)
IncomeLossFromEquityMethodInvestments	1.4	1.2	2.1	1.8
Net Income (loss)	$ (19.5)	$ 2.1	$ (54)	$ (12.1)
Loss per share of common stock (basic and diluted):
Net income (loss) per share - basic	$ (0.14)	$ 0.01	$ (0.38)	$ (0.09)
Net income (loss) per share - diluted	$ (0.14)	$ 0.01	$ (0.38)	$ (0.09)
Net income (loss) per share of common stock (diluted):
Average shares of stock outstanding - basic	142.3	140.8	142.1	140.8
Average shares of stock outstanding - diluted	142.3	144	142.1	140.8

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net Income (loss)	$ (19.5)	$ 2.1	$ (54)	$ (12.1)
Other comprehensive income (loss)
Foreign currency translation adjustments	(0.1)	0.7	(7.9)	(1.1)
Unrealized gain on marketable securities	0	0.4	0	0.5
Defined benefit pension plans	(1)	0.5	(2.6)	(1.8)
Other	0	0	0.1	0
Other comprehensive income (loss), net of tax	0.9	1.6	(5.2)	1.2
Comprehensive income (loss)	$ (18.6)	$ 3.7	$ (59.2)	$ (10.9)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 481	$ 532.7
Receivables, net of allowance for doubtful accounts of $1.0 million at June 30, 2015 and at December 31, 2014	124.6	108.4
Inventories	224.9	229.8
Prepaid expenses and other current assets	7	25
Deferred income taxes	24	45.1
Assets Held For Sale	9.3	9.3
Total current assets	870.8	950.3
Timber and timberlands	53.5	67.1
Property, plant and equipment, at cost	2,327.4	2,315.1
Accumulated depreciation	(1,503.3)	(1,464.4)
Net property, plant and equipment	824.1	850.7
Goodwill	9.7	9.7
Notes receivable from asset sales	432.2	432.2
Investments in and Advance to Affiliates	7.1	5
Restricted cash	15.8	10.4
Other assets	22.5	22.8
Long-term deferred tax asset	0.6	0.6
Total assets	2,236.3	2,348.8
LIABILITIES AND EQUITY
Current portion of long-term debt	2.2	2.4
Accounts payable and accrued liabilities	149.2	168.3
Current portion of contingency reserves	2	2
Total current liabilities	153.4	172.7
Long-term debt, excluding current portion	753.6	754.8
Deferred income taxes	117.3	139.5
Contingency reserves, excluding current portion	12.5	12.2
Other long-term liabilities	142.7	153.8
Stockholders' equity:
Common stock	152.8	152.8
Additional paid-in capital	495.2	507
Retained earnings	758.3	812.3
Treasury stock	(213)	(225)
Accumulated comprehensive loss	(136.5)	(131.3)
Total stockholders' equity	1,056.8	1,115.8
Total liabilities and stockholders' equity	$ 2,236.3	$ 2,348.8

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Allowance for doubtful accounts	$ 1	$ 1

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (loss)	$ (19.5)	$ 2.1	$ (54)	$ (12.1)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	25.3	24.9	52	50.5
Income from unconsolidated affiliates	(1.4)	(1.2)	(2.1)	(1.8)
(Gain) loss on sale or impairment of long-lived assets, net	0.5	(0.5)	0.6	(0.5)
Other operating charges and credits, net	0	0.6	11.6	0.6
Stock-based compensation related to stock plans	2.7	2.4	5.1	4.5
Exchange loss on remeasurement	0.7	(3.9)	4.3	1.3
Increase in contingencies, net of cash payments	0	0.5	0.5	0
Cash settlements of warranties, net of accruals	(2.4)	(2.3)	(5.4)	(5)
Pension expense, net of contributions	2.4	0.7	4.4	1.3
Non-cash interest expense, net	(0.1)	0.1	(0.1)	0.6
Other adjustments, net	0.6	0.6	0.8	0.4
(Increase) decrease in receivables	14.3	(2.8)	(16.6)	(67.2)
(Increase) decrease in inventories	37.3	40	3.1	(11.3)
(Increase) decrease in prepaid expenses and other current assets	(1.2)	(1.8)	0.8	0.7
Decrease in accounts payable and accrued liabilities	(21.4)	(38.4)	(4.2)	(6)
Increase (decrease) in deferred income taxes	3.7	(5.8)	(3.3)	(13.8)
Net cash provided by (used in) operating activities	41.5	15.2	(2.5)	(57.8)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property, plant, and equipment additions	(18.6)	(18.2)	(33.5)	(42.2)
Proceeds from sales of assets	0	0.7	0.4	0.8
(Increase) decrease in restricted cash under letters of credit/credit facility	(5.4)	1.2	(5.4)	1
Net cash used in investing activities	(24)	(16.3)	(38.5)	(40.4)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of long-term debt	0	0	(1.4)	(1.1)
Sale of common stock under equity plans	0.3	0	0.4	0
Taxes paid related to net share settlement of equity awards	(2.9)	(0.1)	(5.3)	(1.5)
Net cash used in financing activities	(2.6)	(0.1)	(6.3)	(2.6)
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	(2.2)	4.2	(4.4)	(1.3)
Net increase (decrease) in cash and cash equivalents	12.7	3	(51.7)	(102.1)
Cash and cash equivalents at beginning of period	468.3	551.7	532.7	656.8
Cash and cash equivalents at end of period	$ 481	$ 554.7	$ 481	$ 554.7

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - 6 months ended Jun. 30, 2015 - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Comprehensive Loss
Balance, Beginning Value at Dec. 31, 2014	$ 1,115.8	$ 152.8	$ (225)	$ 507	$ 812.3	$ (131.3)
Balance, Beginning Value, Shares at Dec. 31, 2014		152.8	(10.6)
Net loss	(54)
Issuance of shares for employee stock plans and stock based compensation	0.4		$ 17.3	(16.9)
Taxes paid related to net share settlement of equity awards			(0.3)
Taxes paid related to net share settlement of equity awards	(5.3)		$ (5.3)
Issuance of shares for employee stock plans and stock-based compensation			0.8
Compensation expense associated with stock awards	4.1			4.1
Other comprehensive loss	(5.2)
Other comprehensive loss	(5.2)
Balance, Ending Value, Shares at Jun. 30, 2015		152.8	(10.1)
Balance, Ending Value at Jun. 30, 2015	1,056.8	$ 152.8	$ (213)	$ 495.2	$ 758.3	$ (136.5)
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	$ 5.3

Basis For Presentation

Basis For Presentation	6 Months Ended
	Jun. 30, 2015
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, 2014 .

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION At June 30, 2015 , LP had stock-based employee compensation plans as described below. The total compensation expense related to all of LP’s stock-based compensation plans was $2.7 million for the quarter ended June 30, 2015 , $2.4 million for the quarter ended June 30, 2014 , $5.1 million for the six months ended June 30, 2015 and $4.5 million for the six months ended June 30, 2014 . SSARS and Options LP grants stock settled stock appreciation rights (SSARs) to key employees and directors. On exercise, LP generally issues shares from treasury to settle these awards. The SSARs are granted at the market price at the date of grant. SSARs become exercisable annually ratably over a three year period and expire ten years after the date of grant. At June 30, 2015 , 3.9 million shares were available to grant under the current stock award plans for stock-based awards. The following table sets out the weighted average assumptions used to estimate the fair value of the SSARs granted using the Black-Scholes option-pricing model in the first six months of the respective years noted. 2015 2014 Expected stock price volatility 54.4% 57.5% Expected dividend yield —% —% Risk-free interest rate 1.5% 1.5% Expected life of options (in years) 6 years 5 years Weighted average fair value of options and SSARs granted $8.80 $9.03 The following table summarizes stock options and SSARs outstanding as of June 30, 2015 , as well as activity during the six month period then ended. Share amounts in thousands Options and SSARs Weighted Average Exercise Price Weighted Aggregate Options and SSARs outstanding at January 1, 2015 7,004 $ 14.19 Options and SSARs granted 379 17.04 Options and SSARs exercised (1,141 ) 11.45 Options and SSARs canceled (281 ) 26.41 Options and SSARs outstanding at June 30, 2015 5,961 14.32 4.7 $ 28.3 Vested and expected to vest at June 30, 2015 (1) 5,663 — — $ 26.9 Options and SSARs exercisable at June 30, 2015 5,185 $ 13.78 4.1 $ 28.3 _______________ (1) Options and SSARS expected to vest based upon historical forfeiture rate The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between LP's closing stock price on the last trading day of the second quarter of 2015 and the exercise price, multiplied by the number of in-the-money options and SSARs) that would have been received by the holders had all holders exercised their awards on June 30, 2015 . This amount changes based on the market value of LP's stock as reported by the New York Stock Exchange. As of June 30, 2015 , there was $5.7 million of total unrecognized compensation costs related to stock options and SSARs. These costs are expected to be recognized over a weighted-average period of 1.8 years. LP recorded compensation expense related to these awards in the first six months of 2015 of $1.9 million . Incentive Share Awards LP has granted incentive share stock awards (restricted stock units) to certain key employees and directors. The employee awards vest three years from date of grant and awards to directors vest one year from date of grant. The awards entitle the participant to receive a specified number of shares of LP common stock at no cost to the participant. The market value at the time of grant approximates the fair value. LP recorded compensation expense related to these awards in the first six months of 2015 of $1.7 million . As of June 30, 2015 , there was $6.1 million of total unrecognized compensation cost related to unvested incentive share awards. This expense will be recognized over a weighted-average period of 1.7 years. The following table summarizes incentive share awards outstanding as of June 30, 2015 as well as activity during the six months then ended. Shares Weighted Average Contractual Term (in years) Aggregate Intrinsic Value (in millions) Incentive share awards outstanding at January 1, 2015 593,613 Incentive share awards granted 250,129 Incentive share awards vested (273,995 ) Incentive share awards canceled (15,083 ) Incentive shares outstanding at June 30, 2015 554,664 1.7 $ 9.5 Vested and expected to vest at June 30, 2015 (1) 526,931 — $ 9.0 _______________ (1) Incentive shares expected to vest based upon historical forfeiture rate Restricted Stock LP grants restricted stock to certain senior key employees. The shares vest three years from the date of grant. During the vesting period, the participants have voting rights and receive dividends, but the shares may not be sold, assigned, transferred, pledged or otherwise encumbered. Additionally, granted but unvested shares are generally forfeited upon termination of employment. The fair value of the restricted shares on the date of the grant is amortized ratably over the vesting period, which is generally three years. As of June 30, 2015 , there was $2.7 million of total unrecognized compensation costs related to restricted stock. This expense will be recognized over the next 1.5 years. The following table summarizes the restricted stock outstanding as of June 30, 2015 as well as activity during the six months then ended. Number of Shares Weighted Average Grant Date Fair Value Restricted stock awards outstanding at January 1, 2015 453,146 $ 13.93 Restricted stock awards granted 69,744 17.04 Restrictions lapsing (225,645 ) 8.71 Restricted stock canceled (14,544 ) 19.29 Restricted stock awards at June 30, 2015 282,701 18.59 Compensation expense related to these awards recognized in the first six months of 2015 was $0.9 million . Performance share awards In connection with Mr. Stevens' appointment to Chief Executive Officer on May 4, 2012, he was awarded 300,000 performance shares. LP recorded compensation expense related to these awards of $0.2 million in the first six months of 2015 . As of June 30, 2015 , there was $0.3 million of total unrecognized compensation costs related to this award. This expense will be recognized over the next year. In 2015, LP awarded performance shares to certain senior key employees. These performance shares are earned based upon LP attaining specified revenue growth rates associated with its SmartSide products as compared to the prior year and LP's overall revenue growth as compared to a predetermined peer group, in each case for 2015. The performance period is measured over 2015 with a subsequent two year vesting period. LP recorded compensation expense related to these awards of $0.3 million in the first six months of 2015 . As of June 30, 2015 , there was $1.4 million of total unrecognized compensation costs related to this award. This expense will be recognized over the next 2.5 years. Phantom stock During 2011 and 2012, LP made annual grants of phantom stock units to its directors. Subsequent to the approval of the 2013 Omnibus Plan, phantom stock units are no longer granted to directors. Holders of phantom stock units do not receive rights of a shareholder, nor is any stock transfered. The units will be paid out in cash at the end of the five year vesting period. The value of one unit is based on the market value of one share of common stock on the vesting date. The expense associated with these grants is recognized over the vesting period and is included in stock-based compensation expense. Since these awards are settled in cash, such awards are required to be remeasured based upon the changes in LP's stock price. As of June 30, 2015 , LP had 66,339 shares outstanding under this program.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS LP’s investments that are measured at fair value on a recurring basis are categorized below using the fair value hierarchy. LP also measures the contingent consideration associated with the business combination using the fair value hierarchy. The fair value hierarchy has three levels based on the reliability of the inputs used to determine fair value. Level 1 refers to fair values determined based on quoted prices in active markets for identical assets. Level 2 refers to fair values estimated using significant other observable inputs and Level 3 includes fair values estimated using significant non-observable inputs. The following table summarizes assets and liabilities measured on a recurring basis for each of the three hierarchy levels presented below. Dollar amounts in millions June 30, 2015 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available for sale securities $ 4.6 $ — $ — $ 4.6 Trading securities 2.4 2.4 — — Contingent consideration 0.2 — — 0.2 Dollar amounts in millions December 31, 2014 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available for sale securities $ 4.6 $ — $ — $ 4.6 Trading securities 2.3 2.3 — — Contingent consideration 0.2 — — 0.2 Due to the lack of observable market quotations on a portion of LP’s auction rate securities (ARS) portfolio, LP evaluates the structure of its ARS holdings and current market estimates of fair value, including fair value estimates from issuing banks that rely exclusively on Level 3 inputs. These inputs include those that are based on expected cash flow streams and collateral values, including assessments of counterparty credit quality, default risk underlying the security, discount rates and overall capital market liquidity. The valuation of LP’s ARS investment portfolio is subject to uncertainties that are difficult to predict. Factors that may impact LP’s valuation include changes to credit ratings of the securities as well as to the underlying assets supporting those securities, rates of default of the underlying assets, underlying collateral value, discount rates, counterparty risk and ongoing strength and quality of market credit and liquidity. The following table summarizes changes in assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the six months ended June 30, 2014 . During the six months ended June 30, 2015 , no adjustment was recognized associated with the fair value of these assets and liabilities. Dollar amounts in millions Available for sale securities Contingent consideration Balance at December 31, 2013 3.7 3.8 Adjustment to contingent consideration fair value 0.1 Total unrealized gains included in other comprehensive income 0.8 — Foreign currency gain — (0.1 ) Balance at June 30, 2014 $ 4.5 $ 3.8 LP estimated the Senior Notes maturing in 2020 to have a fair value of $374.5 million at June 30, 2015 and $371.0 million at December 31, 2014 based upon market quotations. Carrying amounts reported on the balance sheet for cash, cash equivalents, receivables and accounts payable approximate fair value due to the short-term maturity of these items.

Earnings per Share

Earnings per Share	6 Months Ended
	Jun. 30, 2015
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. Performance share awards are included in the calculation of earnings per share using the contingently issuable method. The following table sets forth the computation of basic and diluted earnings per share: Dollar and share amounts in millions, except per share amounts Quarter Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Numerator: Income (loss) common shares: Net income (loss) $ (19.5 ) $ 2.1 $ (54.0 ) $ (12.1 ) Denominator: Basic - weighted average common shares outstanding 142.3 140.8 142.1 140.8 Dilutive effect of stock warrants — 1.3 — — Dilutive effect of stock plans — 1.9 — — Diluted shares outstanding 142.3 144.0 142.1 140.8 Basic and diluted earnings per share: $ (0.14 ) $ 0.01 $ (0.38 ) $ (0.09 ) For the quarter ended ended June 30, 2015 , stock options, warrants and SSARs relating to approximately 5.1 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. For the quarter ended June 30, 2014 , stock options, warrants and SSARs relating to approximately 4.1 million shares of LP common stock were considered not in-the-money for purposes of LP's earnings per share calculation. For the six months ended June 30, 2015 and June 30, 2014 , stock options, warrants and SSARs relating to approximately 5.1 million and 3.5 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 June 30, 2015 , outstanding warrants were exercisable to purchase approximately 573,521 shares.

Receivables

Receivables	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Receivables	RECEIVABLES Receivables consist of the following: Dollar amounts in millions June 30, 2015 December 31, 2014 Trade receivables $ 113.1 $ 96.1 Interest receivables 0.2 0.2 Income tax receivable 3.4 1.4 Other receivables 8.9 11.7 Allowance for doubtful accounts (1.0 ) (1.0 ) Total $ 124.6 $ 108.4 Other receivables at June 30, 2015 and December 31, 2014 primarily consist of sales and other value-added tax receivables, a receivable from a former partner, receivables associated with LP's sales arrangements with contract manufacturers and other miscellaneous receivables.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 December 31, 2014 Logs $ 45.8 $ 39.6 Other raw materials 19.6 21.3 Semi-finished inventory 19.1 19.3 Finished products 140.4 149.6 Total $ 224.9 $ 229.8 Included in finished products inventory as of June 30, 2015 and December 31, 2014 is $8.5 million and $18.1 million related to the lower of cost or market inventory valuation reserves.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2015
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 six months ended June 30, 2015 , LP's overall estimated annual effective tax rate is computed by excluding anticipated losses in Canada for which no deferred tax asset is expected to be recognizable due to the need for valuation allowances. Tax benefit for the period is 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 is 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 six 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 foreign tax rates, Canadian and state valuation allowances and a reduction in the reserve for unrecognized tax benefits. For the first six months of 2014 , the primary differences between the U.S. statutory rate of 35% and the effective rate applicable to LP’s continuing operations relate to state income taxes, the effect of foreign tax rates and the effects of foreign exchange on functional currencies. 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 future years' earnings 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. Certain deferred tax assets as of June 30, 2015 are not recognized in relation to amounts of tax deductions for equity compensation that are greater than the compensation expense recognized for financial reporting. Equity will be increased by $16.5 million if and when such deferred tax assets are ultimately realized. LP uses the "with and without" method for determining when excess tax benefits have been realized. LP and its domestic subsidiaries are subject to U.S. federal income tax as well as income taxes of multiple state jurisdictions. Its foreign subsidiaries are subject to income tax in Canada, Chile, Peru and Brazil. In June 2015 LP finalized its settlement agreement with the US Internal Revenue Service (IRS) regarding their examination of tax years 2007-2009. Accordingly, we recorded a second quarter income tax benefit of $1.6 million and applied a $17.1 million tax deposit (previously recorded in Prepaid and other current assets) against the taxes payable plus estimated accrued interest, creating a $1.4 million overpayment that is reflected in current income taxes receivable at June 30, 2015 . Primarily as a result of the IRS settlement, LP's liability for unrecognized tax benefits has been reduced as of June 30, 2015 by $34.4 million from its 2014 balance. U.S. tax years are now closed through 2010, and no examinations are currently in progress. LP remains subject to U.S. federal examinations of tax years 2011 through 2013, as well as state and local tax examinations for the tax years 2007- 2013. Canadian federal income tax years are closed through 2010. During the second quarter of 2015, the Canada Revenue Agency notified LP of its intention to audit the tax returns of LP’s Canadian subsidiaries for tax years 2012-2013. Preliminary exchanges of accounting data and tax information have recently begun. Quebec provincial audits have been effectively settled through 2012. Chilean returns for years 2010 - 2012 tax years are under review by the Chilean Tax Office. Brazilian returns for years 2009 - 2013 are subject to audit, but no examinations are currently in progress.

Other Operating Credits and Cha

Other Operating Credits and Charges, Net	3 Months Ended
	Jun. 30, 2015
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 was 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 . During the second quarter of 2014, LP recorded a loss of $0.5 million related to an environmental contingency reserve. LP also recorded a loss of $0.1 million related to the fair market value adjustment of the contingent consideration payable in connection with a business combination.

Transactions with Affiliates

Transactions with Affiliates	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Transactions with Affiliates	TRANSACTIONS WITH AFFILIATES LP has an equity investment in Abitibi-LP, a manufacturer of I-joists with Resolute Forest Products. LP sells products and raw materials to Abitibi-LP and purchases products for resale from Abitibi-LP. LP eliminates profits on these sales and purchases, to the extent the inventory has not been sold through to third parties, on the basis of its 50% interest. For the quarters ended June 30, 2015 and 2014 , LP sold $2.5 million and $2.7 million of products to Abitibi-LP and purchased $13.4 million and $16.0 million of I-joists from Abitibi-LP. For the six months ended June 30, 2015 and 2014 , LP sold $4.2 million and $5.2 million of products to Abitibi-LP and purchased $23.8 million and $28.2 million of I-joists from Abitibi-LP. Included in LP’s Consolidated Balance Sheets at June 30, 2015 and December 31, 2014 are $1.2 million and $ 0.7 million in accounts receivable and $0.6 million and $0.4 million in accounts payable associated with Abitibi-LP.

Legal and Environmental Matters

Legal and Environmental Matters	6 Months Ended
	Jun. 30, 2015
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

Selected Segment Data	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Selected Segment Data	SELECTED SEGMENT DATA LP operates in four segments: 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, 2014 . Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Net sales: OSB $ 211.0 $ 223.7 $ 401.2 $ 418.6 Siding 163.9 169.7 337.4 313.2 Engineered Wood Products 72.0 75.9 136.8 138.1 South America 38.7 41.9 74.6 78.5 Other 7.4 8.7 14.7 16.6 Intersegment Sales — (1.4 ) — (1.8 ) $ 493.0 $ 518.5 $ 964.7 $ 963.2 Operating profit (loss): OSB $ (18.1 ) $ (5.5 ) $ (46.5 ) $ (7.4 ) Siding 29.2 25.9 62.1 45.1 Engineered Wood Products (2.3 ) (5.3 ) (6.4 ) (8.4 ) South America 2.0 4.0 4.4 8.2 Other (1.0 ) (1.0 ) (1.9 ) (1.7 ) Other operating charges and credits, net — (0.6 ) (11.6 ) (0.6 ) Gain (loss) on sale or impairment of long-lived assets (0.5 ) 0.5 (0.6 ) 0.5 General corporate and other expenses, net (22.0 ) (20.7 ) (44.7 ) (48.0 ) Other non-operating income (expense) 0.4 3.8 (1.8 ) (0.5 ) Interest income 1.0 1.7 2.4 3.5 Interest expense, net of capitalized interest (7.2 ) (7.4 ) (14.7 ) (15.1 ) Loss from operations before taxes (18.5 ) (4.6 ) (59.3 ) (24.4 ) Benefit for income taxes 1.0 (6.7 ) (5.3 ) (12.3 ) Net income (loss) $ (19.5 ) $ 2.1 $ (54.0 ) $ (12.1 )

Potential Impairments

Potential Impairments	6 Months Ended
	Jun. 30, 2015
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. During the first quarter of 2015, there was an indication of impairment associated with the company's indefinitely curtailed OSB facility in Quebec, Canada. See Note 9 for discussion of the write off of the timber license associated with this facility. LP is currently evaluating various options associated with this mill. Based upon the weighted probability of the future cash flows associated with various options for this facility as of June 30, 2015 , no impairment was required. If the weighting of the probabilities changes or the projected cash flow changes from those included in the calculation, LP may be required to record impairments in the future. As of June 30, 2015 , the fair value of facilities that have not been indefinitely curtailed are substantially in excess of its carrying value and supports the conclusion that no impairment is necessary for those facilities. 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

Defined Benefit Pension Plans	6 Months Ended
	Jun. 30, 2015
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 quarter and six months ended June 30, 2015 and 2014 . The net periodic pension cost included the following components: Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Service cost $ 1.0 $ 0.9 $ 2.0 $ 1.9 Interest cost 3.4 3.6 6.8 7.3 Expected return on plan assets (3.8 ) (4.2 ) (7.6 ) (8.5 ) Amortization of prior service cost 0.1 — 0.2 — Amortization of net loss 1.8 1.4 3.6 2.8 Net periodic pension cost $ 2.5 $ 1.7 $ 5.0 $ 3.5 During the six months ended June 30, 2015 and 2014 , LP recognized $5.0 million and $3.5 million of pension expense for all of LP's defined benefit pension plans. During the six months ended June 30, 2015 , LP made $1.4 million in pension contributions to its defined benefit pension plans. LP expects to contribute between $2.0 million and $5.0 million to its defined benefit pension plans in 2015.

Guarantees and Indemnifications

Guarantees and Indemnifications	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Guarantees and Indemnifications	GUARANTEES AND INDEMNIFICATIONS LP is a party to contracts in which LP agrees to indemnify third parties for certain liabilities that arise out of or relate to the subject matter of the contract. In some cases, this indemnity extends to liabilities arising out of the negligence of the indemnified parties, but usually excludes any liabilities caused by gross negligence or willful misconduct of the indemnified parties. LP cannot estimate the potential amount of future payments under these agreements until events arise that would trigger the liability. See Note 20 of the notes to the financial statements included in LP’s Annual Report on Form 10-K for the year ended December 31, 2014 for further discussion of LP’s 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 quarter and six months ended June 30, 2015 and 2014 are summarized in the following table: Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Beginning balance $ 27.1 $ 26.2 $ 31.4 $ 29.3 Accrued to expense 0.2 0.1 0.3 0.3 Foreign currency translation 0.3 0.5 (1.0 ) 0.1 Payments made (2.6 ) (2.5 ) (5.7 ) (5.4 ) Total warranty reserves 25.0 24.3 25.0 24.3 Current portion of warranty reserves (10.0 ) (12.0 ) (10.0 ) (12.0 ) Long-term portion of warranty reserves $ 15.0 $ 12.3 $ 15.0 $ 12.3 LP continues to monitor warranty and other claims associated with these products and believes as of June 30, 2015 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 Othe

Other Comprehensive Income Other Comprehensive Income	6 Months Ended
	Jun. 30, 2015
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 quarter and six months ended June 30, 2015 : Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at March 31, 2015 $ (41.5 ) $ (97.4 ) $ 2.6 $ (1.1 ) $ (137.4 ) Other comprehensive income before reclassifications (0.1 ) — — — (0.1 ) Amounts reclassified from accumulated comprehensive income — 1.0 — — 1.0 Net current-period other comprehensive income (0.1 ) 1.0 — — 0.9 Balance at June 30, 2015 $ (41.6 ) $ (96.4 ) $ 2.6 $ (1.1 ) $ (136.5 ) 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 before reclassifications (7.9 ) 0.3 — 0.1 (7.5 ) Amounts reclassified from accumulated comprehensive income — 2.3 — — 2.3 Net current-period other comprehensive income (7.9 ) 2.6 — 0.1 (5.2 ) Balance at June 30, 2015 (41.6 ) (96.4 ) 2.6 (1.1 ) (136.5 ) Other comprehensive income activity, net of tax, is provided in the following table for the quarter and six months ended June 30, 2014 : Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at March 31, 2014 (21.0 ) (69.0 ) 2.1 (1.7 ) (89.6 ) Other comprehensive income (loss) before reclassifications 0.7 1.7 0.4 — 2.8 Amounts reclassified from accumulated comprehensive income — (1.2 ) — — (1.2 ) Net current-period other comprehensive income (loss) 0.7 0.5 0.4 — 1.6 Balance at June 30, 2014 (20.3 ) (68.5 ) 2.5 (1.7 ) (88.0 ) Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at December 31, 2013 (19.2 ) (70.3 ) 2.0 (1.7 ) (89.2 ) Other comprehensive income (loss) before reclassifications (1.1 ) 4.3 0.5 — 3.7 Amounts reclassified from accumulated comprehensive income — (2.5 ) — — (2.5 ) Net current-period other comprehensive income (loss) (1.1 ) 1.8 0.5 — 1.2 Balance at June 30, 2014 (20.3 ) (68.5 ) 2.5 (1.7 ) (88.0 ) Reclassifications from accumulated other comprehensive loss for the quarter and six months ended June 30, 2015 and June 30, 2014 are summarized, in millions of dollars, in the following table: Amount reclassified from accumulated comprehensive loss Quarter Ended June 30, Six Months Ended June 30, Details about accumulated other comprehensive income components 2015 2014 2015 2014 Affected line item in the statement where net income (loss) is presented Amortization of defined benefit pension plans Prior service cost $ 0.1 $ — $ 0.2 — (a) Actuarial loss 1.8 1.4 3.6 2.8 (a) Transition obligation — 0.3 — 0.7 (a) 1.9 1.7 3.8 3.5 Total before tax 0.8 0.5 1.5 1.0 Tax benefit Total reclassifications $ 1.1 $ 1.2 $ 2.3 $ 2.5 Net of tax ____________ (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 13 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.

Recent and Prospective Accounti

Recent and Prospective Accounting Pronouncements (Notes)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
New Accounting Pronouncements, Policy [Policy Text Block]	RECENT AND PROSPECTIVE ACCOUNTING PRONOUNCEMENTS In April 2015, the Financial Accounting Standard Board issued ASU No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. The amendments in this ASU require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts.AUS 2015-03 is effective for annual reporting periods beginning after December 15, 2015, including interim periods within the reporting periods and it applied retrospectively. Early adoption is permitted for financial statements that have not been previously issued. LP early adopted this standard as of June 30, 2015. Prior to ASU 2015-03, deferred debt costs were reported on the balance sheet as assets and amortized as interest expense. The Consolidated Balance Sheet as of December 31, 2014 has been adjusted to apply the change in accounting principle retrospectively. There is no effect on the income statement as a result of the change in accounting principle. Debt issuance costs of $4.7 million previously reported as assets on the Consolidated Balance Sheet as of December 31, 2014 have been reclassified as a direct deduction from the carrying amount of the related debt liability. In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification ("ASC") 605, Revenue Recognition. The new revenue recognition standard requires entities to recognize revenue in a way that depicts the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled to in exchange for those goods or services. The ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective on January 1, 2018. LP is currently evaluating the effect that adopting this new accounting guidance will have on its consolidated results of operations and financial position.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]	The following table sets out the weighted average assumptions used to estimate the fair value of the SSARs granted using the Black-Scholes option-pricing model in the first six months of the respective years noted. 2015 2014 Expected stock price volatility 54.4% 57.5% Expected dividend yield —% —% Risk-free interest rate 1.5% 1.5% Expected life of options (in years) 6 years 5 years Weighted average fair value of options and SSARs granted $8.80 $9.03
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity	The following table summarizes stock options and SSARs outstanding as of June 30, 2015 , as well as activity during the six month period then ended. Share amounts in thousands Options and SSARs Weighted Average Exercise Price Weighted Aggregate Options and SSARs outstanding at January 1, 2015 7,004 $ 14.19 Options and SSARs granted 379 17.04 Options and SSARs exercised (1,141 ) 11.45 Options and SSARs canceled (281 ) 26.41 Options and SSARs outstanding at June 30, 2015 5,961 14.32 4.7 $ 28.3 Vested and expected to vest at June 30, 2015 (1) 5,663 — — $ 26.9 Options and SSARs exercisable at June 30, 2015 5,185 $ 13.78 4.1 $ 28.3
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The following table summarizes incentive share awards outstanding as of June 30, 2015 as well as activity during the six months then ended. Shares Weighted Average Contractual Term (in years) Aggregate Intrinsic Value (in millions) Incentive share awards outstanding at January 1, 2015 593,613 Incentive share awards granted 250,129 Incentive share awards vested (273,995 ) Incentive share awards canceled (15,083 ) Incentive shares outstanding at June 30, 2015 554,664 1.7 $ 9.5 Vested and expected to vest at June 30, 2015 (1) 526,931 — $ 9.0
Restricted Stock Activity [Table Text Block]	The following table summarizes the restricted stock outstanding as of June 30, 2015 as well as activity during the six months then ended. Number of Shares Weighted Average Grant Date Fair Value Restricted stock awards outstanding at January 1, 2015 453,146 $ 13.93 Restricted stock awards granted 69,744 17.04 Restrictions lapsing (225,645 ) 8.71 Restricted stock canceled (14,544 ) 19.29 Restricted stock awards at June 30, 2015 282,701 18.59

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value, Measurement Inputs, Disclosure [Table Text Block]	The following table summarizes assets and liabilities measured on a recurring basis for each of the three hierarchy levels presented below. Dollar amounts in millions June 30, 2015 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available for sale securities $ 4.6 $ — $ — $ 4.6 Trading securities 2.4 2.4 — — Contingent consideration 0.2 — — 0.2 Dollar amounts in millions December 31, 2014 Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Available for sale securities $ 4.6 $ — $ — $ 4.6 Trading securities 2.3 2.3 — — Contingent consideration 0.2 — — 0.2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	The following table summarizes changes in assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) during the six months ended June 30, 2014 . During the six months ended June 30, 2015 , no adjustment was recognized associated with the fair value of these assets and liabilities. Dollar amounts in millions Available for sale securities Contingent consideration Balance at December 31, 2013 3.7 3.8 Adjustment to contingent consideration fair value 0.1 Total unrealized gains included in other comprehensive income 0.8 — Foreign currency gain — (0.1 ) Balance at June 30, 2014 $ 4.5 $ 3.8

Earnings per Share (Tables) (Ta

Earnings per Share (Tables) (Tables)	6 Months Ended
	Jun. 30, 2015
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 Quarter Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Numerator: Income (loss) common shares: Net income (loss) $ (19.5 ) $ 2.1 $ (54.0 ) $ (12.1 ) Denominator: Basic - weighted average common shares outstanding 142.3 140.8 142.1 140.8 Dilutive effect of stock warrants — 1.3 — — Dilutive effect of stock plans — 1.9 — — Diluted shares outstanding 142.3 144.0 142.1 140.8 Basic and diluted earnings per share: $ (0.14 ) $ 0.01 $ (0.38 ) $ (0.09 )

Receivables (Tables)

Receivables (Tables)	6 Months Ended
	Jun. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]	Receivables consist of the following: Dollar amounts in millions June 30, 2015 December 31, 2014 Trade receivables $ 113.1 $ 96.1 Interest receivables 0.2 0.2 Income tax receivable 3.4 1.4 Other receivables 8.9 11.7 Allowance for doubtful accounts (1.0 ) (1.0 ) Total $ 124.6 $ 108.4

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2015
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 June 30, 2015 December 31, 2014 Logs $ 45.8 $ 39.6 Other raw materials 19.6 21.3 Semi-finished inventory 19.1 19.3 Finished products 140.4 149.6 Total $ 224.9 $ 229.8 Included in finished products inventory as of June 30, 2015 and December 31, 2014 is $8.5 million and $18.1 million related to the lower of cost or market inventory valuation reserves.

Selected Segment Data (Tables)

Selected Segment Data (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Net sales: OSB $ 211.0 $ 223.7 $ 401.2 $ 418.6 Siding 163.9 169.7 337.4 313.2 Engineered Wood Products 72.0 75.9 136.8 138.1 South America 38.7 41.9 74.6 78.5 Other 7.4 8.7 14.7 16.6 Intersegment Sales — (1.4 ) — (1.8 ) $ 493.0 $ 518.5 $ 964.7 $ 963.2 Operating profit (loss): OSB $ (18.1 ) $ (5.5 ) $ (46.5 ) $ (7.4 ) Siding 29.2 25.9 62.1 45.1 Engineered Wood Products (2.3 ) (5.3 ) (6.4 ) (8.4 ) South America 2.0 4.0 4.4 8.2 Other (1.0 ) (1.0 ) (1.9 ) (1.7 ) Other operating charges and credits, net — (0.6 ) (11.6 ) (0.6 ) Gain (loss) on sale or impairment of long-lived assets (0.5 ) 0.5 (0.6 ) 0.5 General corporate and other expenses, net (22.0 ) (20.7 ) (44.7 ) (48.0 ) Other non-operating income (expense) 0.4 3.8 (1.8 ) (0.5 ) Interest income 1.0 1.7 2.4 3.5 Interest expense, net of capitalized interest (7.2 ) (7.4 ) (14.7 ) (15.1 ) Loss from operations before taxes (18.5 ) (4.6 ) (59.3 ) (24.4 ) Benefit for income taxes 1.0 (6.7 ) (5.3 ) (12.3 ) Net income (loss) $ (19.5 ) $ 2.1 $ (54.0 ) $ (12.1 )

Defined Benefit Pension Plans (

Defined Benefit Pension Plans (Tables)	6 Months Ended
	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The net periodic pension cost included the following components: Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Service cost $ 1.0 $ 0.9 $ 2.0 $ 1.9 Interest cost 3.4 3.6 6.8 7.3 Expected return on plan assets (3.8 ) (4.2 ) (7.6 ) (8.5 ) Amortization of prior service cost 0.1 — 0.2 — Amortization of net loss 1.8 1.4 3.6 2.8 Net periodic pension cost $ 2.5 $ 1.7 $ 5.0 $ 3.5

Guarantees and Indemnificatio31

Guarantees and Indemnifications (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of Product Warranty Liability [Table Text Block]	The activity in warranty reserves for the quarter and six months ended June 30, 2015 and 2014 are summarized in the following table: Quarter Ended June 30, Six Months Ended June 30, Dollar amounts in millions 2015 2014 2015 2014 Beginning balance $ 27.1 $ 26.2 $ 31.4 $ 29.3 Accrued to expense 0.2 0.1 0.3 0.3 Foreign currency translation 0.3 0.5 (1.0 ) 0.1 Payments made (2.6 ) (2.5 ) (5.7 ) (5.4 ) Total warranty reserves 25.0 24.3 25.0 24.3 Current portion of warranty reserves (10.0 ) (12.0 ) (10.0 ) (12.0 ) Long-term portion of warranty reserves $ 15.0 $ 12.3 $ 15.0 $ 12.3

Other Comprehensive Income Ot32

Other Comprehensive Income Other Comprehensive Income (Tables)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
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 quarter and six months ended June 30, 2015 : Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at March 31, 2015 $ (41.5 ) $ (97.4 ) $ 2.6 $ (1.1 ) $ (137.4 ) Other comprehensive income before reclassifications (0.1 ) — — — (0.1 ) Amounts reclassified from accumulated comprehensive income — 1.0 — — 1.0 Net current-period other comprehensive income (0.1 ) 1.0 — — 0.9 Balance at June 30, 2015 $ (41.6 ) $ (96.4 ) $ 2.6 $ (1.1 ) $ (136.5 )	Other comprehensive income activity, net of tax, is provided in the following table for the quarter and six months ended June 30, 2014 : Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at March 31, 2014 (21.0 ) (69.0 ) 2.1 (1.7 ) (89.6 ) Other comprehensive income (loss) before reclassifications 0.7 1.7 0.4 — 2.8 Amounts reclassified from accumulated comprehensive income — (1.2 ) — — (1.2 ) Net current-period other comprehensive income (loss) 0.7 0.5 0.4 — 1.6 Balance at June 30, 2014 (20.3 ) (68.5 ) 2.5 (1.7 ) (88.0 )	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 before reclassifications (7.9 ) 0.3 — 0.1 (7.5 ) Amounts reclassified from accumulated comprehensive income — 2.3 — — 2.3 Net current-period other comprehensive income (7.9 ) 2.6 — 0.1 (5.2 ) Balance at June 30, 2015 (41.6 ) (96.4 ) 2.6 (1.1 ) (136.5 )	Dollar amounts in millions Foreign currency translation adjustments Pension adjustments Unrealized gain (loss) on investments Other Total Balance at December 31, 2013 (19.2 ) (70.3 ) 2.0 (1.7 ) (89.2 ) Other comprehensive income (loss) before reclassifications (1.1 ) 4.3 0.5 — 3.7 Amounts reclassified from accumulated comprehensive income — (2.5 ) — — (2.5 ) Net current-period other comprehensive income (loss) (1.1 ) 1.8 0.5 — 1.2 Balance at June 30, 2014 (20.3 ) (68.5 ) 2.5 (1.7 ) (88.0 )
Disclosure of Reclassification Amount [Text Block]			Reclassifications from accumulated other comprehensive loss for the quarter and six months ended June 30, 2015 and June 30, 2014 are summarized, in millions of dollars, in the following table: Amount reclassified from accumulated comprehensive loss Quarter Ended June 30, Six Months Ended June 30, Details about accumulated other comprehensive income components 2015 2014 2015 2014 Affected line item in the statement where net income (loss) is presented Amortization of defined benefit pension plans Prior service cost $ 0.1 $ — $ 0.2 — (a) Actuarial loss 1.8 1.4 3.6 2.8 (a) Transition obligation — 0.3 — 0.7 (a) 1.9 1.7 3.8 3.5 Total before tax 0.8 0.5 1.5 1.0 Tax benefit Total reclassifications $ 1.1 $ 1.2 $ 2.3 $ 2.5 Net of tax ____________ (a) These accumulated other comprehensive loss components are included in the computation of net periodic pension cost, see Note 13 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.

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - Jun. 30, 2015 - USD ($) $ in Millions	Total
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
SSARS Expiration Date	P10Y
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense	$ 1.7
Unrecognized compensation costs	$ 6.1
Weighted-average period of years costs are expected to be recognied over	1 year 8 months 12 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 1.4
Weighted-average period of years costs are expected to be recognied over	2 years 6 months
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period	3 years
Director [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 2.7
Weighted-average period of years costs are expected to be recognied over	1 year 6 months
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense	$ 0.3
Chief Executive Officer [Member] | Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense	0.2
Chief Executive Officer [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 0.3

Stock-Based Compensation Valuat

Stock-Based Compensation Valuation Assumptions (Details) - Title of Individual with Relationship to Entity [Domain] - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation related to stock plans	$ 2.7	$ 2.4	$ 5.1	$ 4.5
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting Period			3 years
Options and SSARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected sock price volatility			54.40%	57.50%
Expected dividend yield			0.00%	0.00%
Risk-free interest rate			1.50%	1.50%
Expected life of options			6 years	5 years
Weighted average fair value of options and SSARs granted			$ 8.80	$ 9.03

Stock-Based Compensation Outsta

Stock-Based Compensation Outstanding Options and SSARs (Details) - Relationship to Entity [Domain] - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Options / SSARs outstanding at January 1, 2015	7,004
Incentive shares granted	379
Options / SSARs exercised	(1,141)
Options / SSARs canceled	(281)
Options / SSARs outstanding at June 30, 2015	5,961
Options / SSARs outstanding Weighted Average Exercise Price	$ 14.32	$ 14.19
Options / SSARs granted Weighted Average Exercise Price	17.04
Options / SSARs exercised Weighted Average Exercise Price	11.45
Options / SSARs canceled Weighted Average Exercise Price	$ 26.41
Options / SSARs outstanding Weighted Average Contractual Term (in years)	4 years 8 months 16 days
Options / SSARs outstanding Aggregate Intrinsic Value (in millions)	$ 28.3
Vested and expected to vest	5,663
Vested and expected to vest Aggregate Intrinsic Value (in millions)	$ 26.9
Options / SSARs exercisable	5,185
Options / SSARs exercisable Weighted Average Exercise Price	$ 13.78
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years 26 days
Options / SSARs exercisable Aggregate Intrinsic Value (in millions)	$ 28.3
Options and SSARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Weighted-average period of years costs are expected to be recognied over	1 year 9 months 18 days
Compensation Expense	$ 1.9
Unrecognized compensation costs	$ 5.7
Number of Shares Available for Grant	3,900
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Vesting Period	3 years

Stock-Based Compensation Restri

Stock-Based Compensation Restricted Stock Units (Details) - Jun. 30, 2015 $ in Millions	USD ($)yearsshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incentive shares granted	379,000
Incentive shares ouststanding Aggregate Intrinsic Value (in millions) | $	$ 28.3
Director restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense | $	0.9
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs | $	6.1
Compensation Expense | $	$ 1.7
Incentive share awards outstanding at January 1, 2015	593,613
Incentive shares granted	250,129
Incentive share awards vested	(273,995)
Incentive share awards canceled	(15,083)
Incentive shares outstanding at June 30, 2015	554,664
Incentive share awards outstanding Weighted Average Contractual Term (in years)	1 year 8 months 12 days
Incentive shares ouststanding Aggregate Intrinsic Value (in millions) | $	$ 9.5
Vested and expected to vest at June 30, 2015	527,000
Vested and expected to vest Weighted Average Contractual Term (in years) | years	0
Vested and expected to vest Aggregate Intrinsic Value (in millions) | $	$ 9
Weighted-average period of years costs are expected to be recognied over	1 year 8 months 12 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs | $	$ 1.4
Incentive share awards canceled	(14,544)
Incentive shares outstanding at June 30, 2015	282,701
Weighted-average period of years costs are expected to be recognied over	2 years 6 months
Director [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs | $	$ 2.7
Incentive share awards outstanding at January 1, 2015	453,146
Incentive shares granted	69,744
Weighted-average period of years costs are expected to be recognied over	1 year 6 months
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense | $	$ 0.3
Chief Executive Officer [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs | $	$ 0.3
Incentive shares outstanding at June 30, 2015	300,000

Stock-Based Compensation Rest37

Stock-Based Compensation Restricted and Phantom Stock (Details) - USD ($) $ / shares in Units, $ in Millions	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restricted stock awards granted	379,000
Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation Expense	$ 0.3
Phantom Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Incentive shares outstanding at June 30, 2015	66,339
Phantom Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number Of Units Of Phantom Stock Used As Basis For Market Value Of Common Stock On Vesting Date	1,000,000
Number Of Units Of Common Stock Used To Measure Value Of Phantom Stock On Vesting Date	1,000,000
Years phantom stock vests over	5 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 1.4
Weighted-average period of years costs are expected to be recognied over	2 years 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Restrictions lapsed	(14,544)
Incentive shares outstanding at June 30, 2015	282,701
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease)	(225,645)
Restrictions lapsing Weighted Average Grant Date Fair Value	$ 8.71
Restricted Stock [Member] | Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 2.7
Weighted-average period of years costs are expected to be recognied over	1 year 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Incentive share awards outstanding at January 1, 2015	453,146
Restricted stock awards granted	69,744
Restricted stock awards outstanding	$ 18.59	$ 13.93
Restricted stock awards granted Weighted Average Grate Date Fair Value	17.04
Restrictions lapsing Weighted Average Grant Date Fair Value	$ 19.29
Restricted Stock [Member] | Chief Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs	$ 0.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Incentive shares outstanding at June 30, 2015	300,000

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreign Currency Transaction Gain, before Tax	$ (0.1)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	4.5			$ 3.7
Assets, Fair Value Disclosure [Abstract]
Business Combination, Contingent Consideration, Liability	$ 3.8			$ 3.8
Fair Value, Measurements, Recurring [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		$ 4.6	$ 4.6
Trading securities		2.4	2.3
Business Combination, Contingent Consideration, Liability		0.2	0.2
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		0	0
Trading securities		2.4	2.3
Business Combination, Contingent Consideration, Liability		0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		0	0
Trading securities		0	0
Business Combination, Contingent Consideration, Liability		0	0
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member]
Assets, Fair Value Disclosure [Abstract]
Available for sale securities		4.6	4.6
Trading securities		0	0
Business Combination, Contingent Consideration, Liability		0.2	0.2
Senior Secured Notes Maturing 2017 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure		$ 375	$ 371

Fair Value Measurements Unobser

Fair Value Measurements Unobservable Inputs Rollforward (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability	$ 3.8	$ 3.8			$ 3.8
Adjustment to contingent consideration fair value	(0.1)	0.1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance		3.7
Total realized/unrealized gains (losses) Included in other comprehensive income		0.8
Ending balance	$ 4.5	4.5
Foreign Currency Transaction Gain, before Tax		$ (0.1)
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability			$ 0.2	$ 0.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability			0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability			0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Business Combination, Contingent Consideration, Liability			$ 0.2	$ 0.2

Earnings per Share (Details)

Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net Income (loss)	$ (19.5)	$ 2.1	$ (54)	$ (12.1)
Average shares of stock outstanding - basic and diluted	142,300,000	140,800,000	142,100,000	140,800,000
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants		1,300,000
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements		1,900,000
Weighted Average Number of Shares Outstanding, Diluted	142,300,000	144,000,000	142,100,000	140,800,000
Net income (loss) per share - basic	$ (0.14)	$ 0.01	$ (0.38)	$ (0.09)
Diluted earnings per share:
Antidilutive securities excluded from computation of earnings per share	5,100,000	4,100,000	5,100,000	3,500,000
Warrants outstanding	573,521		573,521

Receivables (Details)

Receivables (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Receivables [Abstract]
Trade receivables	$ 113.1	$ 96.1
Interest receivables	0.2	0.2
Income tax receivable	3.4	1.4
Other receivables	8.9	11.7
Allowance for doubtful accounts	(1)	(1)
Accounts Receivable, Net, Current	$ 124.6	$ 108.4

Inventories (Details)

Inventories (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Semi finished inventory	$ 19.1	$ 19.3
Finished products	140.4	149.6
Total	224.9	229.8
Inventory Valuation Reserves	8.5	18.1
Logs [Member]
Inventory, Raw Materials, Gross	45.8	39.6
Other Raw Materials [Member]
Inventory, Raw Materials, Gross	$ 19.6	$ 21.3

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2013	Mar. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate		35.00%	35.00%
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost					$ 16.5
Provision (benefit) for income taxes	$ 1.6
Payment of long-term deposit				$ (17.1)
Income Taxes Receivable, Current	1.4	$ 1.4
Unrecognized Tax Benefits	$ 34.4	$ 34.4

Other Operating Credits and C44

Other Operating Credits and Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other Operating Credits And Charges, Net [Abstract]
Other operating charges and credits, net	$ 0	$ 11.6	$ 0.6	$ 11.6	$ 0.6
Accrual for Environmental Loss Contingencies, Provision for New Losses			(0.5)
Adjustment to contingent consideration fair value			$ (0.1)		$ 0.1

Transactions with Affiliates (D

Transactions with Affiliates (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Ownership in affiliates	50.00%		50.00%
Due from affiliates	$ 1.2		$ 1.2		$ 0.7
Due to Related Parties, Current	0.6		0.6		$ 0.4
AbitibiBowater-LP [Member]
Related Party Transaction [Line Items]
Revenue from affiliates	2.5	$ 2.7	4.2	$ 5.2
AbitibiBowater-LP [Member] | I Joist [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party	$ 13.4	$ 16	$ 23.8	$ 28.2

Selected Segment Data (Details)

Selected Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net sales:	$ 493	$ 518.5	$ 964.7	$ 963.2
Operating profit (loss):	(14.1)	(3.9)	(47.3)	(14.1)
Other operating charges and credits, net	0	(0.6)	(11.6)	(0.6)
(Gain) loss on sale or impairment of long-lived assets, net	(0.5)	0.5	(0.6)	0.5
Other Selling, General and Administrative Expense	(22)	(20.7)	(44.7)	(48)
Other non-operating income	0.4	3.8	(1.8)	(0.5)
Interest income	1	1.7	2.4	3.5
Interest expense, net of capitalized interest	(7.2)	(7.4)	(14.7)	(15.1)
Loss from operations before taxes	(18.5)	(4.6)	(59.3)	(24.4)
Provision (benefit) for income taxes	1	(6.7)	(5.3)	(12.3)
Net loss	(19.5)	2.1	(54)	(12.1)
OSB [Member]
Segment Reporting Information [Line Items]
Net sales:	211	223.7	401.2	418.6
Operating profit (loss):	(18.1)	(5.5)	(46.5)	(7.4)
Siding [Member]
Segment Reporting Information [Line Items]
Net sales:	163.9	169.7	337.4	313.2
Operating profit (loss):	29.2	25.9	62.1	45.1
Engineered Wood Products [Member]
Segment Reporting Information [Line Items]
Net sales:	72	75.9	136.8	138.1
Operating profit (loss):	(2.3)	(5.3)	(6.4)	(8.4)
South America [Member]
Segment Reporting Information [Line Items]
Net sales:	38.7	41.9	74.6	78.5
Operating profit (loss):	2	4	4.4	8.2
Other [Member]
Segment Reporting Information [Line Items]
Net sales:	7.4	8.7	14.7	16.6
Operating profit (loss):	(1)	(1)	(1.9)	(1.7)
Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Net sales:	0	(1.4)	$ 0	$ (1.8)
Unconsolidated Affiliates [Member]
Segment Reporting Information [Line Items]
(Gain) loss on sale or impairment of long-lived assets, net	$ (0.5)	$ 0.5

Defined Benefit Pension Plans47

Defined Benefit Pension Plans (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Pension Expense			$ 5	$ 3.5
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 1	$ 0.9	2	1.9
Interest cost	3.4	3.6	6.8	7.3
Expected return on plan assets	(3.8)	(4.2)	(7.6)	(8.5)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.1	0	0.2	0
Defined Benefit Plan, Amortization of Gains (Losses)	1.8	1.4	3.6	2.8
Net periodic pension cost	$ 2.5	$ 1.7	5	$ 3.5
Pension Contributions			1.4
Maximum [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year			5
Minimum [Member]
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Defined Benefit Plans, Estimated Future Employer Contributions in Next Fiscal Year			$ 2

Guarantees and Indemnificatio48

Guarantees and Indemnifications (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 27.1	$ 26.2	$ 31.4	$ 29.3
Accrued to expense	0.2	0.1	0.3	0.3
Foreign currency translation	0.3	0.5	(1)	0.1
Payments made	(2.6)	(2.5)	(5.7)	(5.4)
Total warranty reserves	$ 27.1	$ 26.2	$ 31.4	$ 29.3	$ 25	$ 24.3
Current portion of warranty reserves					(10)	(12)
Long-term portion of warranty reserves					$ 15	$ 12.3

Other Comprehensive Income (Det

Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income [Line Items]
Foreign Currency Translation Adjustment, Net of Tax	$ (41.6)	$ (20.3)	$ (41.6)	$ (20.3)	$ (41.5)	$ (33.7)	$ (21)	$ (19.2)
Pension and Other Postretirement Benefit Plans, Net of Tax	(96.4)	(68.5)	(96.4)	(68.5)	(97.4)	(99)	(69)	(70.3)
Available-for-sale Securities Adjustment, Net of Tax	2.6	2.5	2.6	2.5	2.6	2.6	2.1	2
Other, Net of Tax	(1.1)	(1.7)	(1.1)	(1.7)	(1.1)	(1.2)	(1.7)	(1.7)
Accumulated comprehensive loss	(136.5)	(88)	(136.5)	(88)	$ (137.4)	$ (131.3)	$ (89.6)	$ (89.2)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	0.1	0	0.2	0
Defined Benefit Plan, Amortization of Gains (Losses)	1.8	1.4	3.6	2.8
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, before Tax	0	0.3	0	0.7
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), before Tax	1.9	1.7	3.8	3.5
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Transition Asset (Obligation), Recognized in Net Periodic Benefit Cost, Tax	0.8	0.5	1.5	1
Foreign currency translation adjustments	(0.1)	0.7	(7.9)	(1.1)
Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0	1.7	0.3	4.3
Unrealized gain on marketable securities	0	0.4	0	0.5
Other	0	0	0.1	0
Other comprehensive income	(0.1)	2.8	(7.5)	3.7
Pension and Other Postretirement Benefit Plans, Net Prior Service Costs Arising During Period, Net of Tax	1	(1.2)	2.3	(2.5)
Other comprehensive income (loss), net of tax	0.9	1.6	(5.2)	1.2
Defined benefit pension plans	(1)	0.5	(2.6)	(1.8)
Other Comprehensive Income (Loss), Reclassification, Pension and Other Postretirement Benefit Plans, Net Gain (Loss) Recognized in Net Periodic Benefit Cost, Net of Tax	1.1	$ 1.2	2.3	$ 2.5
Pension Plan, Defined Benefit [Member]
Accumulated Other Comprehensive Income [Line Items]
Defined benefit pension plans	$ (1)		$ (2.6)

Uncategorized Items - lpx-20150

Label	Element	Value
Additional Paid-in Capital [Member]
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	$ 1