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Document and Entity Information	9 Months Ended
Document and Entity Information	Sep. 30, 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	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding	142,225,477

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
ASSETS
Cash and cash equivalents	$ 559.7	$ 434.7
Restricted cash for bond redemption	93.4	0.0
Receivables, net of allowance for doubtful accounts of $1.1 million at September 30, 2016 and December 31, 2015	138.0	96.4
Inventories	227.1	222.0
Prepaid expenses and other current assets	8.4	7.0
Current portion of notes receivable from assets sales	410.0	0.0
Assets held for sale	9.2	9.0
Total current assets	1,445.8	769.1
Timber and timberlands	50.6	53.1
Property, plant and equipment, at cost	2,459.2	2,392.5
Accumulated depreciation	(1,603.9)	(1,530.1)
Net property, plant and equipment	855.3	862.4
Goodwill	9.7	9.7
Notes receivable from asset sales	22.2	432.2
Investments in and advance to affiliates	7.4	7.7
Restricted cash	15.1	14.3
Other assets	22.4	23.0
Long-term deferred tax asset	3.9	4.8
Total assets	2,432.4	2,176.3
LIABILITIES AND EQUITY
Current portion of long-term debt	458.1	2.1
Accounts payable and accrued liabilities	193.8	139.6
Current portion of contingency reserves	1.3	1.3
Total current liabilities	653.2	143.0
Long-term debt, excluding current portion	374.3	751.8
Deferred income taxes	86.8	99.5
Contingency reserves, excluding current portion	14.6	15.5
Other long-term liabilities	150.7	149.5
Stockholders' equity:
Common stock, $1 par value, 200,000,000 shares authorized, 0, and 152,979,708 shares issued	153.1	153.0
Additional paid-in capital	475.7	496.5
Retained earnings	848.1	724.2
Treasury stock, 0 shares and 9,995,456 shares, at cost	(189.6)	(210.6)
Accumulated comprehensive loss	(134.5)	(146.1)
Total stockholders' equity	1,152.8	1,017.0
Total liabilities and stockholders' equity	$ 2,432.4	$ 2,176.3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Allowance for doubtful accounts	$ 1.1	$ 1.0

Consolidated Statement of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net sales	$ 596.4	$ 464.9	$ 1,683.4	$ 1,429.6
Operating costs and expenses:
Cost of sales	442.6	416.2	1,301.2	1,287.4
Depreciation and amortization	29.6	25.9	86.0	77.9
Selling and administrative	47.0	38.3	135.8	114.9
Loss on sale or impairment of long-lived assets, net	0.3	0.9	1.0	1.5
Other operating credits and charges, net	0.0	1.0	11.4	12.6
Total operating costs and expenses	519.5	482.3	1,535.4	1,494.3
Income (loss) from operations	76.9	(17.4)	148.0	(64.7)
Non-operating income (expense):
Interest expense, net of capitalized interest	(9.0)	(8.4)	(26.3)	(23.1)
Investment income	2.5	0.5	6.4	2.9
Loss on early debt extinguishment	(13.2)	0.0	(13.2)	0.0
Other non-operating items	(0.5)	(3.7)	1.4	(5.5)
Total non-operating income (expense)	(20.2)	(11.6)	(31.7)	(25.7)
Income (loss) from continuing operations before taxes and equity in income of unconsolidated affiliates	56.7	(29.0)	116.3	(90.4)
Provision (benefit) for income taxes	(7.5)	(2.4)	13.1	(7.7)
Equity in income of unconsolidated affiliates	(1.4)	(2.0)	(4.4)	(4.1)
Income (loss) from continuing operations	65.6	(24.6)	107.6	(78.6)
Loss from discontinued operations before taxes	0.0	(2.9)	0.0	(2.9)
Benefit for income taxes	0.0	(1.0)	0.0	(1.0)
Loss from discontinued operations	0.0	(1.9)	0.0	(1.9)
Net Income (loss)	$ 65.6	$ (26.5)	$ 107.6	$ (80.5)
Net income (loss) per share of common stock (basic):
Income (loss) from continuing operations	$ 0.46	$ (0.17)	$ 0.75	$ (0.55)
Loss from discontinued operations	0.00	(0.02)	0.00	(0.02)
Net income (loss) per share - basic	0.46	(0.19)	0.75	(0.57)
Net income (loss) per share of common stock (diluted):
Income (loss) from continuing operations	0.45	(0.17)	0.74	(0.55)
Loss from discontinued operations	0.00	(0.02)	0.00	(0.02)
Net income (loss) per share - diluted	$ 0.45	$ (0.19)	$ 0.74	$ (0.57)
Average shares of stock outstanding - basic	143.7	142.6	143.3	142.3
Average shares of stock outstanding - diluted	145.4	142.6	145.2	142.3

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Income (loss)	$ 65.6	$ (26.5)	$ 107.6	$ (80.5)
Other comprehensive income (loss)
Foreign currency translation adjustments	0.1	(12.0)	10.3	(19.9)
Unrealized loss on investments, net of tax	(0.5)	(0.1)	(0.7)	(0.1)
Defined benefit pension plans:
Change benefit obligations, translation adjustment	0.1	1.2	(0.6)	1.7
Amortization of amounts included in net periodic benefit cost, net of tax	0.9	1.2	2.6	3.3
Other	0.0	(0.1)	0.0	0.0
Other comprehensive income (loss)	0.6	(9.8)	11.6	(15.0)
Comprehensive income (loss)	66.2	(36.3)	119.2	(95.5)
Actuarial loss, net of tax
Defined benefit pension plans:
Amortization of amounts included in net periodic benefit cost, net of tax	0.9	1.1	2.5	3.1
Other comprehensive income (loss)	1.0	2.3	1.9	4.8
Prior service cost, net of tax
Defined benefit pension plans:
Amortization of amounts included in net periodic benefit cost, net of tax	0.0	0.1	0.1	0.2
Other comprehensive income (loss)	$ 0.0	$ 0.1	$ 0.1	$ 0.2

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (loss)	$ 65.6	$ (26.5)	$ 107.6	$ (80.5)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	29.6	25.9	86.0	77.9
Equity in income of unconsolidated affiliates, including dividends	0.0	(2.0)	0.3	(4.1)
Loss on sale or impairment of long-lived assets, net	0.3	0.9	1.0	1.5
Loss on early debt extinguishment	13.2	0.0	13.2	0.0
Other operating credits and charges, net	0.0	1.0	11.4	12.6
Stock-based compensation related to stock plans	3.2	2.2	9.4	7.3
Exchange (gain) loss on remeasurement	(0.2)	1.2	(0.9)	5.5
Cash settlements of contingencies, net of accruals	(0.3)	(1.0)	(1.0)	(0.5)
Cash settlements of warranties, net of accruals	(4.6)	(0.3)	(11.4)	(5.7)
Pension expense, net of contributions	0.0	1.1	1.4	5.5
Non-cash interest expense, net	1.4	0.8	1.6	0.7
Other adjustments, net	(0.3)	0.5	(0.3)	1.3
(Increase) decrease in receivables	14.1	0.6	(37.0)	(16.0)
(Increase) decrease in inventories	4.8	(8.5)	(3.2)	(5.4)
(Increase) decrease in prepaid expenses	0.7	(1.8)	(1.9)	(1.0)
Increase in accounts payable and accrued liabilities	17.0	14.6	53.3	10.4
Increase (decrease) in income taxes	(9.2)	(7.5)	4.6	(10.8)
Increase in other liabilities	0.8	0.0	6.2	0.0
Net cash provided by (used in) operating activities	136.1	1.2	240.3	(1.3)
CASH FLOWS FROM INVESTING ACTIVITIES:
Property, plant, and equipment additions	(27.6)	(33.6)	(78.7)	(67.1)
Investments in and refunds from joint ventures	0.0	1.7	0.0	1.7
Increase in restricted cash under letters of credit/credit facility	0.2	(0.5)	(0.1)	(5.9)
Increase in restricted cash for redemption of long-term debt	(93.4)	0.0	(93.4)	0.0
Other investing activities	(0.1)	0.1	(0.2)	0.5
Net cash used in investing activities	(120.9)	(32.3)	(172.4)	(70.8)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings of long-term debt	350.0	0.0	350.0	0.0
Repayment of long-term debt	(274.8)	(0.8)	(282.7)	(2.2)
Payment of debt issuance fees	(5.0)	0.0	(5.0)	0.0
Sale of common stock, net of cash payments under equity plans	0.0	0.0	(0.1)	0.4
Taxes paid related to net share settlement of equity awards	(0.8)	(0.1)	(8.9)	(5.4)
Net cash used in financing activities	69.4	(0.9)	53.3	(7.2)
EFFECT OF EXCHANGE RATE ON CASH AND CASH EQUIVALENTS	0.3	(1.3)	3.8	(5.7)
Net increase (decrease) in cash and cash equivalents	84.9	(33.3)	125.0	(85.0)
Cash and cash equivalents at beginning of period	474.8	481.0	434.7	532.7
Cash and cash equivalents at end of period	$ 559.7	$ 447.7	$ 559.7	$ 447.7

Basis For Presentation	9 Months Ended
Basis For Presentation	Sep. 30, 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

9 Months Ended

Sep. 30, 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) that 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 Compensation 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 September 30, 2016, 3.2 million shares were available for grant under the 2013 Omnibus Plan.



	Quarter Ended September 30,					Nine Months Ended September 30,
Dollar amounts in millions	2016			2015		2016			2015
Total stock-based compensation expense (costs of sales and general and administrative)	$	3.2		$	2.2	$	9.4		$	7.3
Income tax benefit related to stock-based compensation	$	(0.4	)			$	(3.2	)
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$	0.8		$	0.1	$	8.9		$	5.4

At September 30, 2016, $12.7 million of compensation cost related to unvested restricted performance shares, restricted stock and SSARs attributable to future service had not yet been recognized.

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 nine months of 2016, the Company granted 90,444 performance units at an average grant date fair value of $20.45 per share, 509,127 SSARs at an average grant date fair value of $6.99 per share and 451,795 restricted stock awards (shares or units) at an average grant date fair value of $16.00 per share.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	FAIR VALUE MEASUREMENTS LP estimated its Senior Notes due in 2020 to have a fair value of $90.9 million at September 30, 2016 and $366.2 million at December 31, 2015 based upon market quotations. LP estimated its Senior Notes due in 2024 to have a fair value of $350.4 million at September 30, 2016. Carrying amounts reported on the balance sheet for cash and cash equivalents, accounts 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

9 Months Ended

Sep. 30, 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	Quarter Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016		2015
Numerator:
Income (loss) from continuing operations	$	65.6	$	(24.6	)	$	107.6	$	(78.6	)
Loss from discontinued operations	—		(1.9		)	—		(1.9		)
Net income (loss)	$	65.6	$	(26.5	)	$	107.6	$	(80.5	)
Denominator:
Denominator for basic earnings per share:
Weighted average common shares outstanding - basic	143.7		142.6			143.3		142.3
Effect of dilutive securities:
Dilutive effect of stock warrants	0.2		—			0.2		—
Dilutive effect of employee stock plans	1.5		—			1.7		—
Dilutive potential common shares	1.7		—			1.9		—
Denominator for diluted earnings per share:
Weighted average shares outstanding - diluted	145.4		142.6			145.2		142.3
Basic earnings per share:
Income (loss) from continuing operations	$	0.46	$	(0.17	)	$	0.75	$	(0.55	)
Loss from discontinued operations	—		(0.02		)	—		(0.02		)
Net income (loss) per share - basic	$	0.46	$	(0.19	)	$	0.75	$	(0.57	)
Diluted earnings per share:
Income (loss) from continuing operations	$	0.45	$	(0.17	)	$	0.74	$	(0.55	)
Loss from discontinued operations	—		(0.02		)	—		(0.02		)
Net income (loss) per share - diluted	$	0.45	$	(0.19	)	$	0.74	$	(0.57	)

For the quarter and nine months ended September 30, 2016, stock options, warrants and SSARs relating to approximately 2.2 million and 2.7 million shares of LP common stock were considered not in-the-money for purposes of LP's earnings per share calculation.

For the quarter and nine months ended September 30, 2015, stock options, warrants and SSARs relating to approximately 4.7 million and 5.0 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 September 30, 2016, outstanding warrants were exercisable to purchase approximately 227,129 shares.

Receivables

9 Months Ended

Sep. 30, 2016

Receivables [Abstract]

Receivables

RECEIVABLES

Receivables consist of the following:



Dollar amounts in millions	September 30, 2016			December 31, 2015
Trade receivables	$	127.6		$	82.6
Income tax receivable	3.6			2.0
Other receivables	7.9			12.8
Allowance for doubtful accounts	(1.1		)	(1.0		)
Total	$	138.0		$	96.4

Other receivables at September 30, 2016 and December 31, 2015 primarily consist of sales tax receivables, vendor rebates, interest receivables and other miscellaneous receivables.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Inventories

9 Months Ended

Sep. 30, 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	September 30, 2016		December 31, 2015
Logs	$	46.5	$	58.6
Other raw materials	24.4		21.6
Semi-finished inventory	19.0		18.5
Finished products	137.2		123.3
Total	$	227.1	$	222.0

Notes Receivable from Asset Sales (Notes)

9 Months Ended

Sep. 30, 2016

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	September 30, 2016			December 31, 2015
Trade receivables	$	127.6		$	82.6
Income tax receivable	3.6			2.0
Other receivables	7.9			12.8
Allowance for doubtful accounts	(1.1		)	(1.0		)
Total	$	138.0		$	96.4

NOTE 7 – NOTES RECEIVABLE FROM ASSET SALES

Notes receivable from asset sales are related to transactions that occurred during 1997, 1998 and 2003. The 1997 and 1998 notes receivable provide collateral for LP’s limited recourse notes payable and the 2003 notes receivable provide collateral for LP’s non-recourse notes payable (see Note 9). LP monitors the collectability of these notes on a regular basis.



Dollar amounts in millions	Interest Rate 2016		September 30, 2016		December 31, 2015

Notes receivable (secured), maturing 2018, interest rates fixed	7.3	%	22.2		22.2
Notes receivable (secured), maturing 2018 (accelerated for collection 2016), interest rates variable			410.0		410.0
Total			432.2		432.2
Current portion			410.0		—
Long-term portion			$	22.2	$	432.2

In August 2016, LP entered into agreements with the issuers of the $410.0 million notes receivable maturing in 2018 to provide for the acceleration of the collection of these notes to November 2016. This acceleration will also result in the acceleration of LP's payment of the related notes payable (see Note 9).

Financing Receivables [Text Block]



Dollar amounts in millions	Interest Rate 2016		September 30, 2016		December 31, 2015

Notes receivable (secured), maturing 2018, interest rates fixed	7.3	%	22.2		22.2
Notes receivable (secured), maturing 2018 (accelerated for collection 2016), interest rates variable			410.0		410.0
Total			432.2		432.2
Current portion			410.0		—
Long-term portion			$	22.2	$	432.2

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 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 nine months ended September 30, 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 nine 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 and state valuation allowances, excess tax benefits in connection with LP's stock-based compensation plans, recognition of research and development credits from prior years and an increase in the reserve for unrecognized tax benefits associated with LP's South American operations. For the first nine months of 2015, 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, Canadian and state valuation allowances and a reduction in the reserve for unrecognized tax benefits. During September 2016, LP announced the acceleration of the notes receivable from asset sales (see Note 7) to November of 2016 from 2018. The acceleration of these notes will accelerate the taxable income into the fourth quarter 2016. LP estimates taxes due to the acceleration to be $120.8 million. As of December 31, 2015, LP had $73.4 million of available carryover benefit to offset a portion of LP’s 2016 tax liability. 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.

Long-term Debt

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Debt Disclosure [Text Block]



Dollar amounts in millions			September 30, 2016									December 31, 2015
	Interest Rate 2016		Principal			Unamortized Debt Costs			Total			Principal			Unamortized Debt Costs			Total
Senior Notes:
Senior unsecured notes, maturing 2020 (to be redeemed in 2016), interest rates fixed	7.5	%	$	87.6		$	(0.7	)	$	86.9		$	350.0		$	(3.7	)	$	346.3
Senior unsecured notes, maturing 2024, interest rates fixed	4.875	%	350.0			(5.2		)	344.8
Bank credit facilities:
Chilean term credit facility, maturing 2019, interest rates fixed	UF+3.9%		7.0			(0.3		)	6.7			12.8						12.8
Brazilian export financing facility, maturing 2017, interest rates fixed	6.65	%	2.0						2.0			4.0						4.0
Limited recourse notes payable:
Senior notes, payable 2018, interest rates fixed	7.3	%	22.0						22.0			22.0						22.0
Other financing:
Non-recourse notes payable 2018 (accelerated for repayment 2016), interest rates variable	0.5	%	368.7			(0.1		)	368.6			368.7			(0.2		)	368.5
Other			1.4						1.4			0.3						0.3
Total			838.7			(6.3		)	832.4			757.8			(3.9		)	753.9
Less: current portion of long term debt			(458.9		)	0.8			(458.1		)	(2.1		)				(2.1		)
Net long-term portion			$	379.8		$	(5.5	)	$	374.3		$	755.7		$	(3.9	)	$	751.8

LP issued $368.7 million of non-recourse notes in 2003 in a private placement to unrelated third parties. The notes were originally scheduled to mature in 2018. The notes are supported by a bank letter of credit. LP’s reimbursement obligations under the letter of credit are secured by $410.0 million in notes receivable (see note 7). In August 2016, LP gave a binding notice to the note holder that LP will pay the notes ($368.6 million, net of $0.1 million of unamortized debt costs) plus accrued interest upon receipt of the proceeds for the notes receivable in November 2016.

In May 2012, LP issued $350.0 million aggregate principal amount of 7.5% Senior Notes due 2020. In September 2016, LP announced the commencement of a cash tender offer for any and all of its outstanding 7.5% Senior Notes due 2020 for a purchase price of $1,041.75 for each $1,000 principal amount of 2020 Notes. As of September 30, 2016, LP purchased $262.4 million aggregate principal amount (or approximately 75%) of the Notes. The remaining notes ($86.9 million, net of $0.7 million of unamortized debt costs) plus accrued interest were redeemed in October 2016. The cash required to redeem these notes (including any premium and interest) is classified as Restricted cash for bond redemption on LP's Consolidated Balance Sheet as of September 30, 2016. In connection with this repurchase, LP recorded a loss on early debt extinguishment of $13.2 million, which included $2.2 million associated with the unamortized financing costs associated with these notes.

In September 2016, LP issued $350.0 million aggregate principal of 4.875% Senior Notes due 2024. On or after September 15, 2019, LP may, at its option on one or more occasions, redeem all or any portion of these notes at specified redemption rates. Obligations under the indenture governing LP's notes are unsecured and not presently guaranteed by any of LP's subsidiaries. The indenture contains customary covenants applicable to LP and its subsidiaries, other than certain unrestricted subsidiaries, including restrictions on actions and activities that are restricted under the credit facility. The indenture also contains customary events of default, the occurrence of which could result in acceleration of LP's obligations to repay the indebtedness outstanding thereunder.

Additional descriptions of LP's indebtedness are included in 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.

Other Operating Credits and Charges, Net	9 Months Ended
Other Operating Credits and Charges, Net	Sep. 30, 2016
Other Operating Credits And Charges, Net [Abstract]
Other Operating Credits and Charges Net [Table Text Block]	OTHER OPERATING CREDITS AND CHARGES During the second quarter of 2016, LP recorded an expense of $11.4 million related to an increase in product related warranty reserves and a related adjustment to value added taxes associated with CanExel products sold in specific geographic locations and for a specific time period. 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 Oriented Stand Board (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. During the third quarter of 2015, LP recorded a loss of $1.0 million associated with a marketing settlement with a customer.

Legal and Environmental Matters	9 Months Ended
Legal and Environmental Matters	Sep. 30, 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

9 Months Ended

Sep. 30, 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.



	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Net Sales
OSB	$	282.1		$	200.0		$	751.9		$	601.2
Siding	194.8			157.8			583.3			495.2
EWP	80.7			74.4			230.5			211.2
South America	31.7			26.8			103.2			101.4
Other	7.6			6.8			20.3			21.5
Intersegment Sales	(0.5		)	(0.9		)	(5.8		)	(0.9		)
	$	596.4		$	464.9		$	1,683.4		$	1,429.6
Operating profit (loss):
OSB	$	67.4		$	(11.1	)	$	126.7		$	(57.6	)
Siding	35.2			17.2			103.9			79.3
EWP	—			(0.9		)	(2.0		)	(7.3		)
South America	3.3			2.4			15.3			6.8
Other	(0.4		)	(0.6		)	(1.0		)	(2.5		)
Other operating credits and charges, net	—			(1.0		)	(11.4		)	(12.6		)
Loss on sale or impairment of long-lived assets, net	(0.3		)	(0.9		)	(1.0		)	(1.5		)
General corporate and other expenses, net	(26.9		)	(20.5		)	(78.1		)	(65.2		)
Interest expense, net of capitalized interest	(9.0		)	(8.4		)	(26.3		)	(23.1		)
Investment income	2.5			0.5			6.4			2.9
Loss on early debt extinguishment	(13.2		)	—			(13.2		)	—
Other non-operating items	(0.5		)	(3.7		)	1.4			(5.5		)
Income (loss) from continuing operations before taxes	58.1			(27.0		)	120.7			(86.3		)
Provision (benefit) for income taxes	(7.5		)	(2.4		)	13.1			(7.7		)
Income (loss) from continuing operations	$	65.6		$	(24.6	)	$	107.6		$	(78.6	)

- 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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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+ Details

Potential Impairments	9 Months Ended
Potential Impairments	Sep. 30, 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

9 Months Ended

Sep. 30, 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 quarter and nine months ended September 30, 2016 and 2015. The net periodic pension cost included the following components:



	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Service cost	$	1.2		$	1.0		$	3.6		$	3.1
Interest cost	3.3			3.4			10.1			10.2
Expected return on plan assets	(3.3		)	(3.8		)	(10.0		)	(11.4		)
Amortization of prior service cost ¹	0.1			0.1			0.3			0.3
Amortization of net loss ¹	1.4			1.7			4.1			5.2
Net periodic pension cost	$	2.7		$	2.4		$	8.1		$	7.4
Loss due to settlement	$	—		$	0.4		$	—		$	0.4

¹The amortization of prior service costs and net loss are included in the amounts reclassified from accumulated other comprehensive income (loss); see Note 16 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.

During the nine months ended September 30, 2016 and 2015, LP recognized $8.1 million and $7.8 million (inclusive of a $0.4 million settlement loss associated with the retirement of one of LP's executives) of pension expense for all of LP's defined benefit pension plans.

During the nine months ended September 30, 2016, LP made $6.7 million in pension contributions to its defined benefit pension plans. LP expects to contribute between $1.0 million and $3.0 million to its defined benefit pension plans in the remaining months of 2016.

Product Warranty

9 Months Ended

Sep. 30, 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 quarter and nine months ended September 30, 2016 and 2015 are summarized in the following table:



	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Beginning balance	$	25.6		$	25.0		$	21.0		$	31.4
Accrued to expense	0.2			2.6			0.6			2.9
Accrued to other operating credits and charges	—			—			10.9			—
Foreign currency translation	0.1			0.8			0.6			(0.2		)
Payments made	(4.8		)	(2.9		)	(12.0		)	(8.6		)
Total warranty reserves	21.1			25.5			21.1			25.5
Current portion of warranty reserves	(9.0		)	(10.0		)	(9.0		)	(10.0		)
Long-term portion of warranty reserves	$	12.1		$	15.5		$	12.1		$	15.5

LP continues to monitor warranty and other claims associated with these products and believes as of September 30, 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

9 Months Ended

Sep. 30, 2016

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income (Loss) Note [Text Block]

NOTE 16 - OTHER COMPREHENSIVE INCOME

Other comprehensive income activity, net of tax, is provided in the following table for the quarter and nine months ended September 30, 2016:



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at June 30, 2016	$	(44.9	)	$	(86.9	)	$	(5.4	)	$	3.1		$	(1.0	)	$	(135.1	)
Other comprehensive income (loss) before reclassifications	0.1			0.1			—			(0.8		)	—			(0.6		)
Income taxes	—			—			—			0.3			—			0.3
Net other comprehensive income (loss) before reclassifications	0.1			0.1			—			(0.5		)	—			(0.3		)
Amounts reclassified from accumulated comprehensive income (loss)	—			1.4			0.1			—			—			1.5
Income taxes	—			(0.5		)	(0.1		)	—			—			(0.6		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			0.9			—			—			—			0.9
Total other comprehensive income (loss)	0.1			1.0			—			(0.5		)	—			0.6
Balance at September 30, 2016	$	(44.8	)	$	(85.9	)	$	(5.4	)	$	2.6		$	(1.0	)	$	(134.5	)



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at December 31, 2015	$	(55.1	)	$	(87.8	)	$	(5.5	)	$	3.3		$	(1.0	)	$	(146.1	)
Other comprehensive income (loss) before reclassifications	10.3			(0.6		)	—			(1.1		)	—			8.6
Income taxes	—			—			—			0.4			—			0.4
Net other comprehensive income (loss) before reclassifications	10.3			(0.6		)	—			(0.7		)	—			9.0
Amounts reclassified from accumulated other comprehensive income (loss)	—			4.1			0.3			—			—			4.4
Income taxes	—			(1.6		)	(0.2		)	—			—			(1.8		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			2.5			0.1			—			—			2.6
Total other comprehensive income (loss)	10.3			1.9			0.1			(0.7		)	—			11.6
Balance at September 30, 2016	$	(44.8	)	$	(85.9	)	$	(5.4	)	$	2.6		$	(1.0	)	$	(134.5	)

Other comprehensive income activity, net of tax, is provided in the following table for the quarter and nine months ended September 30, 2015:



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at June 30, 2015	$	(41.6	)	$	(90.6	)	$	(5.8	)	$	2.6		$	(1.1	)	$	(136.5	)
Other comprehensive income (loss) before reclassifications	(12.0		)	1.2			—			(0.2		)	(0.1		)	(11.1		)
Income taxes	—			—			—			0.1			—			0.1
Net other comprehensive income (loss) before reclassifications	(12.0		)	1.2			—			(0.1		)	(0.1		)	(11.0		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			1.8			0.1			—			—			1.9
Income taxes	—			(0.7		)	—			—			—			(0.7		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			1.1			0.1			—			—			1.2
Total other comprehensive income (loss)	(12.0		)	2.3			0.1			(0.1		)	(0.1		)	(9.8		)
Balance at September 30, 2015	$	(53.6	)	$	(88.3	)	$	(5.7	)	$	2.5		$	(1.2	)	$	(146.3	)



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at December 31, 2014	$	(33.7	)	$	(93.1	)	$	(5.9	)	$	2.6		$	(1.2	)	$	(131.3	)
Other comprehensive income (loss) before reclassifications	(19.9		)	1.7			—			(0.2		)	—			(18.4		)
Income taxes	—			—			—			0.1			—			0.1
Net other comprehensive income (loss) before reclassifications	(19.9		)	1.7			—			(0.1		)	—			(18.3		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			5.2			0.3			—			—			5.5
Income taxes	—			(2.1		)	(0.1		)	—			—			(2.2		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			3.1			0.2			—			—			3.3
Total other comprehensive income (loss)	(19.9		)	4.8			0.2			(0.1		)	—			(15.0		)
Balance at September 30, 2015	$	(53.6	)	$	(88.3	)	$	(5.7	)	$	2.5		$	(1.2	)	$	(146.3	)

The amounts reclassified from accumulated other comprehensive income (loss) are included in the computation of net periodic pension cost; see Note 14 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.

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-URI http://asc.fasb.org/extlink&oid=6522872

+ Details

Recent and Prospective Accounting Pronouncements (Notes)	9 Months Ended
	Sep. 30, 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 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 August 2016, the FASB issued ASU 2016-15, "Statement of Cash Flows (Topic 230): Classifications of Certain Cash Receipts and Cash Payments." The standard provided guidance for eight changes with respect to how cash receipts and cash payments are classified in the statement of cash flows, with the objective of reducing diversity in practice. The standard is effective January 1, 2018, with early adoption permitted. LP does not expect the adoption of this new standard to have a material impact on its consolidated results of operations and financial position.

- 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=66092750

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22583-107794

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Indirect Effects of a Change in Accounting Principle
-URI http://asc.fasb.org/extlink&oid=6515603

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22580-107794

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.10-01.(b)(6))
-URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accounting Change
-URI http://asc.fasb.org/extlink&oid=6503790

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22499-107794

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Retrospective Application
-URI http://asc.fasb.org/extlink&oid=6523989

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 270
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305

+ Details

Subsequent Events (Notes)	9 Months Ended
Subsequent Events (Notes)	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events [Text Block]	NOTE 18 - SUBSEQUENT EVENTS On October 14, 2016, LP completed the previously announced redemption of its remaining outstanding 7.500% Senior Notes due 2020 at the redemption price of 103.75% of the principal amount thereof, plus accrued and unpaid interest to, but excluding, the redemption date. This resulted in LP releasing $93.4 million currently held as restricted cash for bond redemption. LP will record $4.0 million in loss on early debt extinguishment associated with this redemption, including $0.7 million in deferred debt costs, during the fourth quarter. On October 28, 2016 LP announced that it has reached an agreement with Norbord Inc. to exchange OSB mills in Quebec, Canada. LP will swap ownership of its Chambord, Quebec, mill for Norbord’s Val-d’Or, Quebec, mill. The asset exchange is expected to be complete in early November 2016.

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2016

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

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



	Quarter Ended September 30,					Nine Months Ended September 30,
Dollar amounts in millions	2016			2015		2016			2015
Total stock-based compensation expense (costs of sales and general and administrative)	$	3.2		$	2.2	$	9.4		$	7.3
Income tax benefit related to stock-based compensation	$	(0.4	)			$	(3.2	)
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$	0.8		$	0.1	$	8.9		$	5.4

Earnings per Share (Tables) (Tables)

9 Months Ended

Sep. 30, 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	Quarter Ended September 30,					Nine Months Ended September 30,
	2016		2015			2016		2015
Numerator:
Income (loss) from continuing operations	$	65.6	$	(24.6	)	$	107.6	$	(78.6	)
Loss from discontinued operations	—		(1.9		)	—		(1.9		)
Net income (loss)	$	65.6	$	(26.5	)	$	107.6	$	(80.5	)
Denominator:
Denominator for basic earnings per share:
Weighted average common shares outstanding - basic	143.7		142.6			143.3		142.3
Effect of dilutive securities:
Dilutive effect of stock warrants	0.2		—			0.2		—
Dilutive effect of employee stock plans	1.5		—			1.7		—
Dilutive potential common shares	1.7		—			1.9		—
Denominator for diluted earnings per share:
Weighted average shares outstanding - diluted	145.4		142.6			145.2		142.3
Basic earnings per share:
Income (loss) from continuing operations	$	0.46	$	(0.17	)	$	0.75	$	(0.55	)
Loss from discontinued operations	—		(0.02		)	—		(0.02		)
Net income (loss) per share - basic	$	0.46	$	(0.19	)	$	0.75	$	(0.57	)
Diluted earnings per share:
Income (loss) from continuing operations	$	0.45	$	(0.17	)	$	0.74	$	(0.55	)
Loss from discontinued operations	—		(0.02		)	—		(0.02		)
Net income (loss) per share - diluted	$	0.45	$	(0.19	)	$	0.74	$	(0.57	)

Receivables (Tables)

9 Months Ended

Sep. 30, 2016

Receivables [Abstract]

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

Receivables consist of the following:



Dollar amounts in millions	September 30, 2016			December 31, 2015
Trade receivables	$	127.6		$	82.6
Income tax receivable	3.6			2.0
Other receivables	7.9			12.8
Allowance for doubtful accounts	(1.1		)	(1.0		)
Total	$	138.0		$	96.4

NOTE 7 – NOTES RECEIVABLE FROM ASSET SALES



Dollar amounts in millions	Interest Rate 2016		September 30, 2016		December 31, 2015

Notes receivable (secured), maturing 2018, interest rates fixed	7.3	%	22.2		22.2
Notes receivable (secured), maturing 2018 (accelerated for collection 2016), interest rates variable			410.0		410.0
Total			432.2		432.2
Current portion			410.0		—
Long-term portion			$	22.2	$	432.2

Inventories (Tables)

9 Months Ended

Sep. 30, 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	September 30, 2016		December 31, 2015
Logs	$	46.5	$	58.6
Other raw materials	24.4		21.6
Semi-finished inventory	19.0		18.5
Finished products	137.2		123.3
Total	$	227.1	$	222.0

Notes Receivable from Asset Sales (Tables)

9 Months Ended

Sep. 30, 2016

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	September 30, 2016			December 31, 2015
Trade receivables	$	127.6		$	82.6
Income tax receivable	3.6			2.0
Other receivables	7.9			12.8
Allowance for doubtful accounts	(1.1		)	(1.0		)
Total	$	138.0		$	96.4

NOTE 7 – NOTES RECEIVABLE FROM ASSET SALES



Dollar amounts in millions	Interest Rate 2016		September 30, 2016		December 31, 2015

Notes receivable (secured), maturing 2018, interest rates fixed	7.3	%	22.2		22.2
Notes receivable (secured), maturing 2018 (accelerated for collection 2016), interest rates variable			410.0		410.0
Total			432.2		432.2
Current portion			410.0		—
Long-term portion			$	22.2	$	432.2

Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]



Dollar amounts in millions			September 30, 2016									December 31, 2015
	Interest Rate 2016		Principal			Unamortized Debt Costs			Total			Principal			Unamortized Debt Costs			Total
Senior Notes:
Senior unsecured notes, maturing 2020 (to be redeemed in 2016), interest rates fixed	7.5	%	$	87.6		$	(0.7	)	$	86.9		$	350.0		$	(3.7	)	$	346.3
Senior unsecured notes, maturing 2024, interest rates fixed	4.875	%	350.0			(5.2		)	344.8
Bank credit facilities:
Chilean term credit facility, maturing 2019, interest rates fixed	UF+3.9%		7.0			(0.3		)	6.7			12.8						12.8
Brazilian export financing facility, maturing 2017, interest rates fixed	6.65	%	2.0						2.0			4.0						4.0
Limited recourse notes payable:
Senior notes, payable 2018, interest rates fixed	7.3	%	22.0						22.0			22.0						22.0
Other financing:
Non-recourse notes payable 2018 (accelerated for repayment 2016), interest rates variable	0.5	%	368.7			(0.1		)	368.6			368.7			(0.2		)	368.5
Other			1.4						1.4			0.3						0.3
Total			838.7			(6.3		)	832.4			757.8			(3.9		)	753.9
Less: current portion of long term debt			(458.9		)	0.8			(458.1		)	(2.1		)				(2.1		)
Net long-term portion			$	379.8		$	(5.5	)	$	374.3		$	755.7		$	(3.9	)	$	751.8

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Selected Segment Data (Tables)

9 Months Ended

Sep. 30, 2016

Segment Reporting [Abstract]

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



	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Net Sales
OSB	$	282.1		$	200.0		$	751.9		$	601.2
Siding	194.8			157.8			583.3			495.2
EWP	80.7			74.4			230.5			211.2
South America	31.7			26.8			103.2			101.4
Other	7.6			6.8			20.3			21.5
Intersegment Sales	(0.5		)	(0.9		)	(5.8		)	(0.9		)
	$	596.4		$	464.9		$	1,683.4		$	1,429.6
Operating profit (loss):
OSB	$	67.4		$	(11.1	)	$	126.7		$	(57.6	)
Siding	35.2			17.2			103.9			79.3
EWP	—			(0.9		)	(2.0		)	(7.3		)
South America	3.3			2.4			15.3			6.8
Other	(0.4		)	(0.6		)	(1.0		)	(2.5		)
Other operating credits and charges, net	—			(1.0		)	(11.4		)	(12.6		)
Loss on sale or impairment of long-lived assets, net	(0.3		)	(0.9		)	(1.0		)	(1.5		)
General corporate and other expenses, net	(26.9		)	(20.5		)	(78.1		)	(65.2		)
Interest expense, net of capitalized interest	(9.0		)	(8.4		)	(26.3		)	(23.1		)
Investment income	2.5			0.5			6.4			2.9
Loss on early debt extinguishment	(13.2		)	—			(13.2		)	—
Other non-operating items	(0.5		)	(3.7		)	1.4			(5.5		)
Income (loss) from continuing operations before taxes	58.1			(27.0		)	120.7			(86.3		)
Provision (benefit) for income taxes	(7.5		)	(2.4		)	13.1			(7.7		)
Income (loss) from continuing operations	$	65.6		$	(24.6	)	$	107.6		$	(78.6	)

Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2016

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 September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Service cost	$	1.2		$	1.0		$	3.6		$	3.1
Interest cost	3.3			3.4			10.1			10.2
Expected return on plan assets	(3.3		)	(3.8		)	(10.0		)	(11.4		)
Amortization of prior service cost ¹	0.1			0.1			0.3			0.3
Amortization of net loss ¹	1.4			1.7			4.1			5.2
Net periodic pension cost	$	2.7		$	2.4		$	8.1		$	7.4
Loss due to settlement	$	—		$	0.4		$	—		$	0.4

Product Warranty (Tables)

9 Months Ended

Sep. 30, 2016

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The activity in warranty reserves for the quarter and nine months ended September 30, 2016 and 2015 are summarized in the following table:



	Quarter Ended September 30,						Nine Months Ended September 30,
Dollar amounts in millions	2016			2015			2016			2015
Beginning balance	$	25.6		$	25.0		$	21.0		$	31.4
Accrued to expense	0.2			2.6			0.6			2.9
Accrued to other operating credits and charges	—			—			10.9			—
Foreign currency translation	0.1			0.8			0.6			(0.2		)
Payments made	(4.8		)	(2.9		)	(12.0		)	(8.6		)
Total warranty reserves	21.1			25.5			21.1			25.5
Current portion of warranty reserves	(9.0		)	(10.0		)	(9.0		)	(10.0		)
Long-term portion of warranty reserves	$	12.1		$	15.5		$	12.1		$	15.5

Other Comprehensive Income Other Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2016

Accumulated Other Comprehensive Income (Loss) [Line Items]

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



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at June 30, 2016	$	(44.9	)	$	(86.9	)	$	(5.4	)	$	3.1		$	(1.0	)	$	(135.1	)
Other comprehensive income (loss) before reclassifications	0.1			0.1			—			(0.8		)	—			(0.6		)
Income taxes	—			—			—			0.3			—			0.3
Net other comprehensive income (loss) before reclassifications	0.1			0.1			—			(0.5		)	—			(0.3		)
Amounts reclassified from accumulated comprehensive income (loss)	—			1.4			0.1			—			—			1.5
Income taxes	—			(0.5		)	(0.1		)	—			—			(0.6		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			0.9			—			—			—			0.9
Total other comprehensive income (loss)	0.1			1.0			—			(0.5		)	—			0.6
Balance at September 30, 2016	$	(44.8	)	$	(85.9	)	$	(5.4	)	$	2.6		$	(1.0	)	$	(134.5	)



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at December 31, 2015	$	(55.1	)	$	(87.8	)	$	(5.5	)	$	3.3		$	(1.0	)	$	(146.1	)
Other comprehensive income (loss) before reclassifications	10.3			(0.6		)	—			(1.1		)	—			8.6
Income taxes	—			—			—			0.4			—			0.4
Net other comprehensive income (loss) before reclassifications	10.3			(0.6		)	—			(0.7		)	—			9.0
Amounts reclassified from accumulated other comprehensive income (loss)	—			4.1			0.3			—			—			4.4
Income taxes	—			(1.6		)	(0.2		)	—			—			(1.8		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			2.5			0.1			—			—			2.6
Total other comprehensive income (loss)	10.3			1.9			0.1			(0.7		)	—			11.6
Balance at September 30, 2016	$	(44.8	)	$	(85.9	)	$	(5.4	)	$	2.6		$	(1.0	)	$	(134.5	)

Other comprehensive income activity, net of tax, is provided in the following table for the quarter and nine months ended September 30, 2015:



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at June 30, 2015	$	(41.6	)	$	(90.6	)	$	(5.8	)	$	2.6		$	(1.1	)	$	(136.5	)
Other comprehensive income (loss) before reclassifications	(12.0		)	1.2			—			(0.2		)	(0.1		)	(11.1		)
Income taxes	—			—			—			0.1			—			0.1
Net other comprehensive income (loss) before reclassifications	(12.0		)	1.2			—			(0.1		)	(0.1		)	(11.0		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			1.8			0.1			—			—			1.9
Income taxes	—			(0.7		)	—			—			—			(0.7		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			1.1			0.1			—			—			1.2
Total other comprehensive income (loss)	(12.0		)	2.3			0.1			(0.1		)	(0.1		)	(9.8		)
Balance at September 30, 2015	$	(53.6	)	$	(88.3	)	$	(5.7	)	$	2.5		$	(1.2	)	$	(146.3	)



				Pension Adjustments
Dollar amounts in millions	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at December 31, 2014	$	(33.7	)	$	(93.1	)	$	(5.9	)	$	2.6		$	(1.2	)	$	(131.3	)
Other comprehensive income (loss) before reclassifications	(19.9		)	1.7			—			(0.2		)	—			(18.4		)
Income taxes	—			—			—			0.1			—			0.1
Net other comprehensive income (loss) before reclassifications	(19.9		)	1.7			—			(0.1		)	—			(18.3		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			5.2			0.3			—			—			5.5
Income taxes	—			(2.1		)	(0.1		)	—			—			(2.2		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			3.1			0.2			—			—			3.3
Total other comprehensive income (loss)	(19.9		)	4.8			0.2			(0.1		)	—			(15.0		)
Balance at September 30, 2015	$	(53.6	)	$	(88.3	)	$	(5.7	)	$	2.5		$	(1.2	)	$	(146.3	)

Stock-Based Compensation (Details) - USD ($)	3 Months Ended		9 Months Ended
Stock-Based Compensation (Details) - USD ($)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense (costs of sales and general and administrative)	$ 3,200,000	$ 2,200,000	$ 9,400,000	$ 7,300,000
Income tax benefit related to stock-based compensation	(400,000)		(3,200,000)
Impact on cash flow due to taxes paid related to net share settlement of equity awards	$ 800,000	$ 100,000	$ 8,900,000	$ 5,400,000

Stock-Based Compensation Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2016	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 12.7
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	3,200,000
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 16.3
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, Grants in Period	90,444
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 20.45
Stock Settled Stock Appreciation Rights (SSARs) [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, Grants in Period	509,127
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value	$ 6.99
Restricted Stock Awards [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, Grants in Period	451,795
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 16.00

Fair Value Measurements (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Senior unsecured notes, maturing 2020 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure	$ 90.9	$ 366.2
Senior unsecured notes, maturing 2024 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notes Payable, Fair Value Disclosure	$ 350.4

Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Income (loss) from continuing operations	$ 65.6	$ (24.6)	$ 107.6	$ (78.6)
Loss from discontinued operations	0.0	(1.9)	0.0	(1.9)
Net Income (loss)	$ 65.6	$ (26.5)	$ 107.6	$ (80.5)
Weighted average common shares outstanding	143.7	142.6	143.3	142.3
Dilutive effect of stock warrants	0.2		0.2
Dilutive effect of employee stock plans	1.5		1.7
Dilutive potential common shares	1.7		1.9
Adjusted weighted average shares	145.4	142.6	145.2	142.3
Net income (loss) per share of common stock (basic):
Income (loss) from continuing operations	$ 0.46	$ (0.17)	$ 0.75	$ (0.55)
Loss from discontinued operations	0.00	(0.02)	0.00	(0.02)
Net income (loss) per share - basic	0.46	(0.19)	0.75	(0.57)
Net income (loss) per share of common stock (diluted):
Income (loss) from continuing operations	0.45	(0.17)	0.74	(0.55)
Loss from discontinued operations	0.00	(0.02)	0.00	(0.02)
Net income (loss) per share - diluted	$ 0.45	$ (0.19)	$ 0.74	$ (0.57)

Earnings per Share Narrative (Details) - shares	3 Months Ended		9 Months Ended
Earnings per Share Narrative (Details) - shares	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,200,000	4,700,000	2,700,000	5,000,000
Warrants outstanding	227,129		227,129

Receivables (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Receivables [Abstract]
Trade receivables	$ 127.6	$ 82.6
Income tax receivable	3.6	2.0
Other receivables	7.9	12.8
Allowance for doubtful accounts	(1.1)	(1.0)
Total	$ 138.0	$ 96.4

Inventories (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Logs	$ 46.5	$ 58.6
Other raw materials	24.4	21.6
Semi-finished inventory	19.0	18.5
Finished products	137.2	123.3
Total	$ 227.1	$ 222.0

Notes Receivable from Asset Sales (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current portion	$ 410.0	$ 0.0
Long-term portion	22.2	432.2
Notes receivable (secured), maturing 2018, interest rates fixed
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	22.2	22.2
Notes receivable (secured), maturing 2018 (accelerated for collection 2016), interest rates variable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	410.0	410.0
Total
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Net	$ 432.2	$ 432.2

Income Taxes (Details) - USD ($) $ in Millions	9 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	35.00%	35.00%
Deferred Tax Assets, Operating Loss Carryforwards			$ 73.4
Installment sales gain deferral, Pinewood [Member]
Deferred Tax Liabilities, Net	$ 120.8

Long-term Debt Long-term Debt (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt, Gross	$ 838.7	$ 757.8
Unamortized Discount (Premium) and Debt Issuance Costs	(6.3)	(3.9)
Long-term Debt, Net	832.4	753.9
Long-term Debt, Current Maturities	(458.1)	(2.1)
Long-term Debt, Excluding Current Maturities	$ 374.3	751.8
Senior unsecured notes, maturing 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.50%
Long-term Debt, Gross	$ 87.6	350.0
Unamortized Discount (Premium) and Debt Issuance Costs	(0.7)	(3.7)
Long-term Debt, Net	86.9	346.3
Long-term Debt, Current Maturities	$ (86.9)
Senior unsecured notes, maturing 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.875%
Long-term Debt, Gross	$ 350.0
Unamortized Discount (Premium) and Debt Issuance Costs	(5.2)
Long-term Debt, Net	344.8
Chilean term credit facility, maturing 2019 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	7.0	12.8
Unamortized Discount (Premium) and Debt Issuance Costs	(0.3)
Long-term Debt, Net	$ 6.7	12.8
Brazilian export financing facility, maturing 2017 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.70%
Long-term Debt, Gross	$ 2.0	4.0
Long-term Debt, Net	$ 2.0	4.0
Senior notes payable 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.30%
Long-term Debt, Gross	$ 22.0	22.0
Long-term Debt, Net	22.0	22.0
Non-recourse notes payable 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	368.7	368.7
Unamortized Discount (Premium) and Debt Issuance Costs	(0.1)	(0.2)
Long-term Debt, Net	368.6	368.5
Long-term Debt, Current Maturities	(368.6)
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt, Gross	1.4	0.3
Long-term Debt, Net	$ 1.4	$ 0.3

Long-term Debt Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Long-term Debt Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	$ 458.1		$ 458.1		$ 2.1
Unamortized Discount (Premium) and Debt Issuance Costs	(6.3)		(6.3)		(3.9)
Loss on early debt extinguishment	(13.2)	$ 0.0	(13.2)	$ 0.0
Non-recourse notes payable 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	368.7		368.7
Debt Instrument, Collateral Amount	410.0		410.0
Long-term Debt, Current Maturities	368.6		368.6
Unamortized Discount (Premium) and Debt Issuance Costs	(0.1)		(0.1)		(0.2)
Senior unsecured notes, maturing 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350.0		$ 350.0
Debt Instrument, Interest Rate, Stated Percentage	7.50%		7.50%
Repayments of Debt	$ 262.4
Long-term Debt, Current Maturities	86.9		$ 86.9
Unamortized Discount (Premium) and Debt Issuance Costs	(0.7)		(0.7)		$ (3.7)
Loss on early debt extinguishment	13.2
Write off of Deferred Debt Issuance Cost	2.2
Senior unsecured notes, maturing 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 350.0		$ 350.0
Debt Instrument, Interest Rate, Stated Percentage	4.875%		4.875%
Unamortized Discount (Premium) and Debt Issuance Costs	$ (5.2)		$ (5.2)

Other Operating Credits and Charges, Net (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Sep. 30, 2015	Mar. 31, 2015	Sep. 30, 2016	Sep. 30, 2015
Other Operating Credits And Charges, Net [Abstract]
Other operating credits and charges, net	$ 0.0	$ 11.4	$ 1.0	$ 11.6	$ 11.4	$ 12.6

Selected Segment Data (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Selected Segment Data (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Net sales:	$ 596.4	$ 464.9	$ 1,683.4	$ 1,429.6
Operating profit (loss):	76.9	(17.4)	148.0	(64.7)
Other operating credits and charges, net	0.0	(1.0)	(11.4)	(12.6)
Loss on sale or impairment of long-lived assets, net	(0.3)	(0.9)	(1.0)	(1.5)
General corporate and other expenses, net	(26.9)	(20.5)	(78.1)	(65.2)
Other non-operating items	(0.5)	(3.7)	1.4	(5.5)
Loss on early debt extinguishment	(13.2)	0.0	(13.2)	0.0
Investment income	2.5	0.5	6.4	2.9
Interest expense, net of capitalized interest	(9.0)	(8.4)	(26.3)	(23.1)
Income (loss) from continuing operations before taxes	58.1	(27.0)	120.7	(86.3)
Provision (benefit) for income taxes	(7.5)	(2.4)	13.1	(7.7)
Income (loss) from continuing operations	65.6	(24.6)	107.6	(78.6)
OSB [Member]
Segment Reporting Information [Line Items]
Net sales:	282.1	200.0	751.9	601.2
Operating profit (loss):	67.4	(11.1)	126.7	(57.6)
Siding [Member]
Segment Reporting Information [Line Items]
Net sales:	194.8	157.8	583.3	495.2
Operating profit (loss):	35.2	17.2	103.9	79.3
Engineered Wood Products [Member]
Segment Reporting Information [Line Items]
Net sales:	80.7	74.4	230.5	211.2
Operating profit (loss):	0.0	(0.9)	(2.0)	(7.3)
South America [Member]
Segment Reporting Information [Line Items]
Net sales:	31.7	26.8	103.2	101.4
Operating profit (loss):	3.3	2.4	15.3	6.8
Other [Member]
Segment Reporting Information [Line Items]
Net sales:	7.6	6.8	20.3	21.5
Operating profit (loss):	(0.4)	(0.6)	(1.0)	(2.5)
Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Net sales:	$ (0.5)	$ (0.9)	$ (5.8)	$ (0.9)

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

3 Months Ended

9 Months Ended

Sep. 30, 2016

Sep. 30, 2015

Sep. 30, 2016

Sep. 30, 2015

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

Service cost

$ 1.2

$ 1.0

$ 3.6

$ 3.1

Interest cost

3.3

3.4

10.1

10.2

Expected return on plan assets

(3.3)

(3.8)

(10.0)

(11.4)

Amortization of prior service cost 1

0.1

0.3

^[1]

0.3

Amortization of net loss 1

1.4

1.7

4.1

^[1]

5.2

Net periodic pension cost

2.7

2.4

8.1

7.4

Loss due to settlement

$ 0.0

$ 0.4

0.0

0.4

Pension Expense

8.1

$ 7.8

Pension Contributions

6.7

Minimum [Member]

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

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

1.0

Maximum [Member]

Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]

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

$ 3.0

[1]

Product Warranty (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
Product Warranty (Details) - USD ($) $ in Millions	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Beginning Balance	$ 25.6	$ 25.0	$ 21.0	$ 31.4
Accrued to expense	0.2	2.6	0.6	2.9
Accrued to other operating credits and charges	0.0	0.0	10.9	0.0
Foreign currency translation	0.1	0.8	0.6	(0.2)
Payments made	(4.8)	(2.9)	(12.0)	(8.6)
Total warranty reserves	$ 25.6	25.0	$ 21.0	$ 31.4	$ 21.1	$ 25.5
Current portion of warranty reserves					(9.0)	(10.0)
Long-term portion of warranty reserves					$ 12.1	$ 15.5
Damages from Product Defects [Member]
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Accrued to expense		$ 2.5

Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Beginning Balance	$ (135.1)	$ (136.5)	$ (146.1)	$ (131.3)
Other comprehensive income (loss) before reclassifications	(0.6)	(11.1)	8.6	(18.4)
Income taxes	0.3	0.1	0.4	0.1
Net other comprehensive income (loss) before reclassifications	(0.3)	(11.0)	9.0	(18.3)
Amounts reclassified from accumulated other comprehensive income (loss)	1.5	1.9	4.4	5.5
Income taxes	(0.6)	(0.7)	(1.8)	(2.2)
Net amounts reclassified from cumulative other comprehensive income (loss)	0.9	1.2	2.6	3.3
Total other comprehensive income (loss)	0.6	(9.8)	11.6	(15.0)
Ending Balance	(134.5)	(146.3)	(134.5)	(146.3)
Foreign currency translation adjustments
Beginning Balance	(44.9)	(41.6)	(55.1)	(33.7)
Other comprehensive income (loss) before reclassifications	0.1	(12.0)	10.3	(19.9)
Income taxes	0.0	0.0	0.0	0.0
Net other comprehensive income (loss) before reclassifications	0.1	(12.0)	10.3	(19.9)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0	0.0
Income taxes	0.0	0.0	0.0	0.0
Net amounts reclassified from cumulative other comprehensive income (loss)	0.0	0.0	0.0	0.0
Total other comprehensive income (loss)	0.1	(12.0)	10.3	(19.9)
Ending Balance	(44.8)	(53.6)	(44.8)	(53.6)
Actuarial loss, net of tax
Beginning Balance	(86.9)	(90.6)	(87.8)	(93.1)
Other comprehensive income (loss) before reclassifications	0.1	1.2	(0.6)	1.7
Income taxes	0.0	0.0	0.0	0.0
Net other comprehensive income (loss) before reclassifications	0.1	1.2	(0.6)	1.7
Amounts reclassified from accumulated other comprehensive income (loss)	1.4	1.8	4.1	5.2
Income taxes	(0.5)	(0.7)	(1.6)	(2.1)
Net amounts reclassified from cumulative other comprehensive income (loss)	0.9	1.1	2.5	3.1
Total other comprehensive income (loss)	1.0	2.3	1.9	4.8
Ending Balance	(85.9)	(88.3)	(85.9)	(88.3)
Prior service cost, net of tax
Beginning Balance	(5.4)	(5.8)	(5.5)	(5.9)
Other comprehensive income (loss) before reclassifications	0.0	0.0	0.0	0.0
Income taxes	0.0	0.0	0.0	0.0
Net other comprehensive income (loss) before reclassifications	0.0	0.0	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.1	0.1	0.3	0.3
Income taxes	(0.1)	0.0	(0.2)	(0.1)
Net amounts reclassified from cumulative other comprehensive income (loss)	0.0	0.1	0.1	0.2
Total other comprehensive income (loss)	0.0	0.1	0.1	0.2
Ending Balance	(5.4)	(5.7)	(5.4)	(5.7)
Unrealized gain (loss) on investments
Beginning Balance	3.1	2.6	3.3	2.6
Other comprehensive income (loss) before reclassifications	(0.8)	(0.2)	(1.1)	(0.2)
Income taxes	0.3	0.1	0.4	0.1
Net other comprehensive income (loss) before reclassifications	(0.5)	(0.1)	(0.7)	(0.1)
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0	0.0
Income taxes	0.0	0.0	0.0	0.0
Net amounts reclassified from cumulative other comprehensive income (loss)	0.0	0.0	0.0	0.0
Total other comprehensive income (loss)	(0.5)	(0.1)	(0.7)	(0.1)
Ending Balance	2.6	2.5	2.6	2.5
Other
Beginning Balance	(1.0)	(1.1)	(1.0)	(1.2)
Other comprehensive income (loss) before reclassifications	0.0	(0.1)	0.0	0.0
Income taxes	0.0	0.0	0.0	0.0
Net other comprehensive income (loss) before reclassifications	0.0	(0.1)	0.0	0.0
Amounts reclassified from accumulated other comprehensive income (loss)	0.0	0.0	0.0	0.0
Income taxes	0.0	0.0	0.0	0.0
Net amounts reclassified from cumulative other comprehensive income (loss)	0.0	0.0	0.0	0.0
Total other comprehensive income (loss)	0.0	(0.1)	0.0	0.0
Ending Balance	$ (1.0)	$ (1.2)	$ (1.0)	$ (1.2)

Subsequent Events (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
Subsequent Events (Details) - USD ($) $ in Millions	Dec. 31, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Debt Instrument, Redemption Price, Percentage		103.80%
Restricted cash for bond redemption		$ 93.4		$ 93.4
Loss on early debt extinguishment		$ (13.2)	$ 0.0	$ (13.2)	$ 0.0
Subsequent Event [Member]
Subsequent Event [Line Items]
Subsequent Event, Date	Oct. 14, 2016
Loss on early debt extinguishment	$ 4.0
Write off of Deferred Debt Issuance Cost	$ 0.7