Armstrong World Industries (AWI) 10-Q 28 Apr 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 22, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'ARMSTRONG WORLD INDUSTRIES INC	'
Entity Central Index Key	'0000007431	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	54,808,061
Trading Symbol	'awi	'

Condensed_Consolidated_Stateme

Condensed Consolidated Statements Of Earnings And Comprehensive Income (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Condensed Consolidated Statements Of Earnings And Comprehensive Income [Abstract]	'		'
Net sales	$634.40		$622.30
Cost of goods sold	479.4		477.8
Gross profit	155		144.5
Selling, general and administrative expenses	117.3		112.7
Equity earnings from joint venture	-14.8		-15.2
Operating income	52.5		47
Interest expense	11.6		33.2
Other non-operating expense	5.3		'
Other non-operating (income)	-0.6		-1.3
Earnings from continuing operations before income taxes	36.2		15.1
Income tax expense	19.3		11.9
Earnings from continuing operations	16.9		3.2
Loss on sale of discontinued business, net of tax benefit of $ - and ($0.1)	'		-0.2
Net loss from discontinued operations	'		-0.2
Net earnings	16.9		3
Other comprehensive income (loss), net of tax:	'		'
Foreign currency translation adjustments	-0.4		-6.2
Derivative (loss) gain	-0.6		4.3
Pension and postretirement adjustments	7.1		8.9
Total other comprehensive	6.1	[1]	7	[1]
Total comprehensive income	$23		$10
Earnings per share of common stock, continuing operations:	'		'
Basic	$0.31		$0.05
Diluted	$0.30		$0.05
Loss per share of common stock, discontinued operations:	'		'
Basic	'		'
Diluted	'		'
Net earnings per share of common stock:	'		'
Basic	$0.31		$0.05
Diluted	$0.30		$0.05
Average number of common shares outstanding:	'		'
Basic	54.8		59.2
Diluted	55.3		59.8
[1]	Amounts are net of tax

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements Of Earnings And Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013
Condensed Consolidated Statements Of Earnings And Comprehensive Income [Abstract]	'
Loss on sale of discontinued business, tax benefit	($0.10)

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2014		Dec. 31, 2013
In Millions, unless otherwise specified
Current assets:	'		'
Cash and cash equivalents	$131		$135.20
Accounts and notes receivable, net	244.3		222.2
Inventories, net	428.5		381.7
Deferred income taxes	70.3		72
Income tax receivable	12.9		17.4
Other current assets	66.5		55.5
Total current assets	953.5		884
Property, plant, and equipment, less accumulated depreciation and amortization of $663.7 and $639.7, respectively	1,113.20		1,107.20
Prepaid pension costs	178		167
Investment in joint venture	128.6		132
Intangible assets, net	519.5		522.9
Deferred income taxes	25.5		30.1
Other non-current assets	73.2		73.4
Total assets	2,991.50		2,916.60
Current liabilities:	'		'
Short-term debt	42.7		'
Current installments of long-term debt	30.3		23.9
Accounts payable and accrued expenses	379.4		383.6
Income tax payable	2.9		2.7
Deferred income taxes	0.7		0.7
Total current liabilities	456		410.9
Long-term debt, less current installments	1,035		1,042.60
Postretirement benefit liabilities	233.5		234.2
Pension benefit liabilities	223.4		225.5
Other long-term liabilities	64.1		67.5
Income taxes payable	39.9		81.7
Deferred income taxes	229.4		181
Total noncurrent liabilities	1,825.30		1,832.50
Shareholders' equity:	'		'
Common stock, $0.01 par value per share, authorized 200 million shares; issued 59,864,407 shares, outstanding 54,807,025 shares in 2014 and 59,464,309 shares issued, outstanding 54,406,927 shares in 2013	0.6		0.6
Capital in excess of par value	1,112.40		1,098.40
Retained earnings	224.1		207.2
Treasury stock, at cost, 5,057,382 shares	-261.4		-261.4
Accumulated other comprehensive loss	-365.5	[1]	-371.6	[1]
Total shareholders' equity	710.2		673.2
Total liabilities and shareholders' equity	$2,991.50		$2,916.60
[1]	Amounts are net of tax

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Condensed Consolidated Balance Sheets [Abstract]	'	'
Property, plant and equipment, accumulated depreciation and amortization	$663.70	$639.70
Common stock, par value	$0.01	$0.01
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	59,864,407	59,464,309
Common stock, shares outstanding	54,807,025	54,406,927
Treasury stock, shares	5,057,382	5,057,382

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements Of Shareholders' Equity (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income [Member]	Total
In Millions, except Share data
Balance at Dec. 31, 2012	$0.60	$1,076.80	$113.10	'	($471.40)	$719.10
Common stock shares, balance at Dec. 31, 2012	58,934,050	'	'	'	'	'
Stock issuance	212,198	'	'	'	'	'
Share-based employee compensation	'	5.7	'	'	'	5.7
Net earnings	'	'	3	'	'	3
Other comprehensive income	'	'	'	'	7	7	[1]
Balance at Mar. 31, 2013	0.6	1,082.50	116.1	'	-464.4	734.8
Common stock shares, balance at Mar. 31, 2013	59,146,248	'	'	'	'	'
Balance at Dec. 31, 2013	0.6	1,098.40	207.2	-261.4	-371.6	673.2
Treasury stock shares, balance at Dec. 31, 2013	'	'	'	5,057,382	'	5,057,382
Common stock shares, balance at Dec. 31, 2013	54,406,927	'	'	'	'	54,406,927
Stock issuance	400,098	'	'	'	'	'
Share-based employee compensation	'	14	'	'	'	14
Net earnings	'	'	16.9	'	'	16.9
Other comprehensive income	'	'	'	'	6.1	6.1	[1]
Balance at Mar. 31, 2014	$0.60	$1,112.40	$224.10	($261.40)	($365.50)	$710.20
Treasury stock shares, balance at Mar. 31, 2014	'	'	'	5,057,382	'	5,057,382
Common stock shares, balance at Mar. 31, 2014	54,807,025	'	'	'	'	54,807,025
[1]	Amounts are net of tax

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net earnings	$16.90	$3
Adjustments to reconcile net earnings to net cash (used for) operating activities:	'	'
Depreciation and amortization	30	25.4
Write off of debt financing costs	'	18.9
Deferred income taxes	11.8	2.4
Share-based compensation	5.1	5.1
Equity earnings from joint venture	-14.8	-15.2
Other non-cash adjustments, net	6.8	-0.3
Changes in operating assets and liabilities:	'	'
Receivables	-22.9	-35.2
Inventories	-47.2	-29.6
Other current assets	-9.9	-3.5
Other non-current assets	-2.6	-6
Accounts payable and accrued expenses	-6.1	16.5
Income taxes payable	5.8	6.7
Other long-term liabilities	-7	-5.2
Other, net	1.2	3
Net cash (used for) operating activities	-32.9	-14
Cash flows from investing activities:	'	'
Purchases of property, plant and equipment	-40.9	-52.3
Return of investment from joint venture	18.2	14.9
(Payment of) proceeds from company owned life insurance, net	-0.2	0.1
Proceeds from the sale of assets	0.9	'
Net cash (used for) investing activities	-22	-37.3
Cash flows from financing activities:	'	'
Proceeds from revolving credit facility and other short-term debt	67.8	'
Payments of revolving credit facility and other short-term debt	-25	'
Proceeds from long-term debt	'	1,025
Payments of long-term debt	-1.2	-1,026
Financing costs	'	-7.2
Special dividends paid	-1.2	-0.7
Proceeds from exercised stock options	8.8	2.7
Excess tax benefit from share-based awards	2.7	'
Net cash provided by (used for) financing activities	51.9	-6.2
Effect of exchange rate changes on cash and cash equivalents	-1.2	-0.9
Net (decrease) in cash and cash equivalents	-4.2	-58.4
Cash and cash equivalents at beginning of year	135.2	336.4
Cash and cash equivalents at end of period	131	278
Supplemental Cash Flow Disclosures:	'	'
Interest paid	10	11.1
Income taxes paid, net	1.7	2.6
Amounts in accounts payable for capital expenditures	$16.80	$14.90

Business_And_Basis_Of_Presenta

Business And Basis Of Presentation	3 Months Ended
	Mar. 31, 2014
Business And Basis Of Presentation [Abstract]	'
Business And Basis Of Presentation	'
	NOTE 1.  BUSINESS AND BASIS OF PRESENTATION
	Armstrong World Industries, Inc. (“AWI”) is a Pennsylvania corporation incorporated in 1891. When we refer to "we," "our" and "us" in these notes, we are referring to AWI and its subsidiaries.  We use the term “AWI” when we are referring solely to Armstrong World Industries, Inc.
	In December 2000, AWI filed a voluntary petition for relief (the “Filing”) under Chapter 11 of the U.S. Bankruptcy Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the District of Delaware (the “Bankruptcy Court”) in order to use the court-supervised reorganization process to achieve a resolution of AWI’s asbestos-related liability.  On October 2, 2006, AWI’s court-approved plan of reorganization became effective and AWI emerged from Chapter 11.  All claims in AWI’s Chapter 11 case have been resolved and closed.
	On October 2, 2006,  the Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust (the “Asbestos PI Trust”) was created to address AWI’s personal injury (including wrongful death) asbestos-related liability.  All present and future asbestos-related personal injury claims against AWI, including contribution claims of co-defendants but excluding certain foreign claims against subsidiaries, arising directly or indirectly out of AWI’s pre-Filing use of, or other activities involving, asbestos are channeled to the Asbestos PI Trust.
	In August 2009, Armor TPG Holdings LLC (“TPG”) and the Asbestos PI Trust entered into agreements pursuant to which TPG purchased from the Asbestos PI Trust 7,000,000 shares of our common stock and acquired an economic interest in an additional 1,039,777 shares pursuant to a forward sales contract.  During the fourth quarter of 2012, the Asbestos PI Trust and TPG together sold 5,980,000 shares in a secondary public offering.  In the third quarter of 2013, the Asbestos PI Trust and TPG together sold 12,057,382 shares in another secondary public offering.  Contemporaneously with this secondary public offering, we paid $261.4 million, including associated fees, to buy back 5,057,382 shares, which we currently hold in treasury.  The treasury share purchase was funded by existing cash and borrowings under our credit and securitization facilities.  In November 2013, the Asbestos PI Trust physically settled the 2009 forward sales contract by delivering to TPG the 1,039,777 shares in which TPG previously held an economic interest.  Additionally, during the fourth quarter of 2013, the Asbestos PI Trust and TPG together sold an additional 6,000,000 shares.  In March 2014, the Asbestos PI Trust and TPG together sold an additional 3,900,000 shares, which consisted of the last remaining 2,054,977 shares owned by TPG and an additional 1,845,023 shares owned by the Asbestos PI Trust. We did not sell any shares and did not receive any proceeds from these offerings.  As a result of these transactions the Asbestos PI Trust now holds approximately 17% of our outstanding shares and TPG no longer owns any of our common stock.
	In September 2012, we entered into a definitive agreement to sell our cabinets business for $27 million.  The sale was completed in October 2012.  The transaction was subject to working capital adjustments which were completed in the second quarter of 2013.  The financial results of the cabinets business, which were previously shown as a separate reporting segment, have been reclassified as discontinued operations for all periods presented.  See Note 3 to the Condensed Consolidated Financial Statements for additional financial information related to discontinued operations.
	The accounting policies used in preparing the Condensed Consolidated Financial Statements in this Form 10-Q are the same as those used in preparing the Consolidated Financial Statements for the year ended December 31, 2013.  These statements should therefore be read in conjunction with the Consolidated Financial Statements and notes that are included in the Form 10-K for the fiscal year ended December 31, 2013.  In the opinion of management, all adjustments of a normal recurring nature have been included to provide a fair statement of the results for the reporting periods presented.  Quarterly results are not necessarily indicative of annual earnings, primarily due to the different level of sales in each quarter of the year and the possibility of changes in general economic conditions.
	Certain amounts in the prior year’s Condensed Consolidated Financial Statements have been recast to conform to the 2014 presentation.
	These Condensed Consolidated Financial Statements are prepared in accordance with U.S. generally accepted accounting principles (“U.S. GAAP”).  The statements include management estimates and judgments, where appropriate.  Management utilizes estimates to record many items including certain asset values, allowances for bad debts, inventory obsolescence and lower of cost or market charges, warranty, workers’ compensation, general liability and environmental claims and income taxes.  When preparing an estimate, management determines the amount based upon the consideration of relevant information.  Management may confer with outside parties, including outside counsel.  Actual results may differ from these estimates.
	In February 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2013-04 “Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date” which is part of ASC 405: Liabilities.  The guidance requires an entity to measure obligations resulting from joint and several liability arrangements, within the scope of this ASU, as the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors.  The guidance requires an entity to disclose the nature and amount of the obligation. The guidance is to be applied retrospectively and was effective for us beginning January 1, 2014.  There was no impact on our financial condition, results of operations or cash flows as a result of the adoption of this guidance.
	In July 2013, the FASB issued ASU 2013-11 “Income Taxes - Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists” which is part of ASC 740: Income Taxes.  The guidance requires an entity to present an unrecognized tax benefit and a net operating loss (“NOL”) carryforward, a similar tax loss, or a tax credit carryforward on a net basis as part of a deferred tax asset, unless the unrecognized tax benefit is not available to reduce the deferred tax asset component or would not be utilized for that purpose, then a liability would be recognized.  The guidance was applied prospectively and was effective for us beginning January 1, 2014.  As a result of adopting this guidance, we recorded a reduction to noncurrent income taxes payable and a corresponding increase to noncurrent deferred tax liabilities of approximately $40 million.  There was no impact on results of operations or cash flows as a result of the adoption of this guidance.
	Operating results for the first quarter of 2014 and 2013 included in this report are unaudited.  However, these Condensed Consolidated Financial Statements have been reviewed by an independent registered public accounting firm in accordance with standards of the Public Company Accounting Oversight Board (United States) for a limited review of interim financial information.

Segment_Results

Segment Results	3 Months Ended
	Mar. 31, 2014
Segment Results [Abstract]	'
Segment Results	'
	NOTE 2.  SEGMENT RESULTS
		Three Months Ended
		March 31,
		2014	2013
	Net sales to external customers
	Building Products	$	$
		308.2	292.8
	Resilient Flooring	208.1	214.8
	Wood Flooring	118.1	114.7
	Total net sales to external customers	$	$
		634.4	622.3
		Three Months Ended
		March 31,
		2014	2013
	Segment operating income (loss)
	Building Products	$	$
		57.8	59.3
	Resilient Flooring	9.4	6.4
	Wood Flooring	5.1	0.5
	Unallocated Corporate (expense)	-19.8	-19.2
	Total consolidated operating income	$	$
		52.5	47.0
		Three Months Ended
		March 31,
		2014	2013
	Total consolidated operating income	$	$
		52.5	47.0
	Interest expense	11.6	33.2
	Other non-operating expense	5.3	-
	Other non-operating income	-0.6	-1.3
	Earnings from continuing operations before income taxes	$	$
		36.2	15.1
		31-Mar-14	31-Dec-13
	Segment assets
	Building Products	$	$
		1,087.3	1,071.9
	Resilient Flooring	680.2	635.2
	Wood Flooring	354.6	335.2
	Unallocated Corporate	869.4	874.3
	Total consolidated assets	$	$
		2,991.5	2,916.6
	Impairment testing of our tangible assets occurs whenever events or changes in circumstances indicate that the carrying amount of the assets may not be recoverable.

Discontinued_Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2014
Discontinued Operations [Abstract]	'
Discontinued Operations	'
	NOTE 3. – DISCONTINUED OPERATIONS
	In September 2012, we entered into a definitive agreement to sell our cabinets business to American Industrial Partners (“AIP”) for $27 million in cash.  During the third quarter of 2012, we recorded an impairment charge of $17.5 million on the cabinets’ assets to reflect the expected proceeds from the sale. The sale was completed in October 2012.  The transaction was subject to working capital adjustments which were completed in the second quarter of 2013.
	The operating results of the cabinets business (previously shown as the Cabinets reporting segment), for the first quarter of 2013 was a pre-tax loss of $0.3 million ($0.2 million net of tax benefit). The financial results of the cabinets business have been classified as discontinued operations for all periods presented.  The Condensed Consolidated Statement of Cash Flows does not separately report the cash flows of the discontinued operation.
	During the third quarter of 2013, we recorded an estimated liability of $7.5 million for a potential withdrawal liability related to a multi-employer pension plan.  See Note 17 to the Condensed Consolidated Financial Statements for further information.

Accounts_And_Notes_Receivable

Accounts And Notes Receivable	3 Months Ended
	Mar. 31, 2014
Accounts And Notes Receivable [Abstract]	'
Accounts And Notes Receivable	'
	NOTE 4. ACCOUNTS AND NOTES RECEIVABLE
		31-Mar-14	31-Dec-13
	Customer receivables	$	$
		263.1	242.7
	Customer notes	1.3	1.6
	Miscellaneous receivables	7.3	5.9
	Less allowance for warranties, discounts and losses	-27.4	-28
	Accounts and notes receivable, net	$	$
		244.3	222.2
	Generally, we sell our products to select, pre-approved customers whose businesses are affected by changes in economic and market conditions.  We consider these factors and the financial condition of each customer when establishing our allowance for losses from doubtful accounts.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Inventories	'
	NOTE 5.  INVENTORIES
		31-Mar-14	31-Dec-13
	Finished goods	$	$
		317.3	292.8
	Goods in process	34.9	29.2
	Raw materials and supplies	133.2	118.6
	Less LIFO and other reserves	-56.9	-58.9
	Total inventories, net	$	$
		428.5	381.7

Other_Current_Assets

Other Current Assets	3 Months Ended
	Mar. 31, 2014
Other Current Assets [Abstract]	'
Other Current Assets	'
	NOTE 6. OTHER CURRENT ASSETS
		31-Mar-14	31-Dec-13
	Prepaid expenses	$	$
		49.5	46.0
	Fair value of derivative assets	7.4	5.9
	Other	9.6	3.6
	Total other current assets	$	$
		66.5	55.5

Equity_Investments

Equity Investments	3 Months Ended
	Mar. 31, 2014
Equity Investments [Abstract]	'
Equity Investments	'
	NOTE 7.  EQUITY INVESTMENT
	Investment in joint venture at March 31, 2014 reflected our 50% equity interest in our Worthington Armstrong Venture (“WAVE”) joint venture with Worthington Industries, Inc.  Condensed income statement data for WAVE is summarized below:
		Three Months Ended
		March 31,
		2014	2013
	Net sales	$	$
		92.3	91.9
	Gross profit	43.5	43.3
	Net earnings	32.2	33.8

Intangible_Assets

Intangible Assets	3 Months Ended
	Mar. 31, 2014
Intangible Assets [Abstract]	'
Intangible Assets	'
	NOTE 8.  INTANGIBLE ASSETS
	The following table details amounts related to our intangible assets as of March 31, 2014 and December 31, 2013.
			31-Mar-14		31-Dec-13
		Estimated Useful Life	Gross Carrying Amount	Accumulated Amortization	Gross Carrying Amount	Accumulated Amortization
	Amortizing intangible assets
	Customer relationships	20 years	$	$	$	$
			165.5	62.2	165.5	60.2
	Developed technology	15 years	83.3	40.9	83.1	39.4
	Other	Various	21.2	2.0	21.5	1.9
	Total		$	$	$	$
			270.0	105.1	270.1	101.5
	Non-amortizing intangible assets
	Trademarks and brand names	Indefinite	354.6		354.3
	Total intangible assets		$		$
			624.6		624.4
		Three Months Ended
		March 31,
		2014	2013
	Amortization expense	$	$
		3.6	3.6

Severances_And_Related_Costs

Severances And Related Costs	3 Months Ended
	Mar. 31, 2014
Severances And Related Costs [Abstract]	'
Severances And Related Costs	'
	NOTE 9. SEVERANCES AND RELATED COSTS
	In the first quarter of 2013, we recorded $5.2 million for severance and related costs to reflect approximately 40 position eliminations in our European Resilient Flooring business ($1.8 million in cost of goods sold and $1.0 million in selling, general and administrative (“SG&A”) expense) and approximately 40 position eliminations in our Resilient Flooring business in Australia ($2.4 million in cost of goods sold).

Income_Tax_Expense

Income Tax Expense	3 Months Ended
	Mar. 31, 2014
Income Tax Expense [Abstract]	'
Income Tax Expense	'
	NOTE 10.  INCOME TAX EXPENSE
		Three Months Ended
		March 31,
		2014	2013
	Earnings from continuing operations before income taxes	$	$
		36.2	15.1
	Income tax expense	19.3	11.9
	Effective tax rate	53.3%	78.8%
	The effective tax rate for the first quarter of 2014 was lower than the comparable period of 2013 primarily due to mix of income and a lower rate impact of unbenefitted foreign losses. First quarter 2013 income was lower as a result of the write-off of unamortized debt financing costs related to our previous credit facility to interest expense.
	We do not expect to record any material changes during 2014 to unrecognized tax benefits that were claimed on tax returns covering tax years ending on or before December 31, 2013.
	As of March 31, 2014, we consider foreign unremitted earnings to be permanently reinvested.

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Debt	'
	NOTE 11.  DEBT
	On March 15, 2013, we refinanced our $1.3 billion senior credit facility and amended the underlying credit agreement.  The amended facility is composed of a $250 million revolving credit facility (with a $150 million sublimit for letters of credit), a $550 million Term Loan A and a $475 million Term Loan B.  The terms of the facility resulted in a lower interest rate spread (2.5% vs. 3.0%) than our previous facility.  We also extended the maturity of Term Loan A from November 2015 to March 2018 and of Term Loan B from March 2018 to March 2020. The facility is secured by U.S. personal property, the capital stock of material U.S. subsidiaries, and a pledge of 65% of the stock of our material first tier foreign subsidiaries. In connection with the refinancing, we incurred $8.3 million for bank, legal, and other fees, of which $7.2 million was capitalized and is being amortized into interest expense over the life of the loans.  Additionally, we wrote off $18.9 million of unamortized debt financing costs in the first quarter of 2013 related to our previous credit facility to interest expense (see Liquidity for further information).
	As of March 31, 2014, we were in compliance with all covenants of the amended senior credit facility. Our debt agreements include other restrictions, including restrictions pertaining to the acquisition of additional debt, the redemption, repurchase or retirement of our capital stock, payment of dividends, and certain financial transactions as it relates to specified assets.  We currently believe that default under these covenants is unlikely.  Fully borrowing under our revolving credit facility would not violate these covenants.
	On March 28, 2013, we amended our $100 million Accounts Receivable Securitization Facility with the Bank of Nova Scotia.  We decreased the facility to $75 million to reduce commitment fees on unused capacity.  The maturity was extended to March 2016.
	As of March 31, 2014, outstanding balances on the revolving credit facility and accounts receivable securitization facility were $20.0 million and $17.8 million respectively and are classified as short-term debt.  There was no outstanding balance on either facility as of December 31, 2013.

Pensions_And_Other_Benefit_Pro

Pensions And Other Benefit Programs	3 Months Ended
	Mar. 31, 2014
Pensions And Other Benefit Programs [Abstract]	'
Pensions And Other Benefit Programs	'
	NOTE 12.  PENSIONS AND OTHER BENEFIT PROGRAMS
	Following are the components of net periodic benefit costs:
		Three Months Ended
		March 31,
		2014	2013
	U.S. defined-benefit plans:
	Pension benefits
	Service cost of benefits earned during the period	$	$
		3.6	4.2
	Interest cost on projected benefit obligation	21.4	19.9
	Expected return on plan assets	-34.8	-34.1
	Amortization of prior service cost	0.5	0.5
	Amortization of net actuarial loss	10.6	10.2
	Net periodic pension cost	$	$
		1.3	0.7
	Retiree health and life insurance benefits
	Service cost of benefits earned during the period	$	$
		0.2	0.3
	Interest cost on projected benefit obligation	2.7	2.4
	Amortization of prior service credit	-0.1	-0.2
	Amortization of net actuarial gain	-1	-0.9
	Net periodic postretirement benefit cost	$	$
		1.8	1.6
	Non-U.S. defined-benefit pension plans
	Service cost of benefits earned during the period	$	$
		0.8	0.7
	Interest cost on projected benefit obligation	3.5	3.3
	Expected return on plan assets	-2.9	-2.4
	Amortization of net actuarial loss	0.5	0.7
	Net periodic pension cost	$	$
		1.9	2.3

Financial_Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2014
Financial Instruments [Abstract]	'
Financial Instruments	'
	NOTE 13. FINANCIAL INSTRUMENTS
	We do not hold or issue financial instruments for trading purposes.  The estimated fair values of our financial instruments are as follows:
		31-Mar-14		31-Dec-13
		Carrying amount	Estimated fair value	Carrying amount	Estimated fair value
	Assets (Liabilities), net:
	Total long-term debt, including current portion	($1,065.30)	($1,066.50)	($1,066.50)	($1,065.20)
	Foreign currency contract obligations	6.4	6.4	5.2	5.2
	Natural gas contracts	0.6	0.6	0.5	0.5
	Interest rate swap contracts	-7.9	-7.9	-7.9	-7.9
	The carrying amounts of cash and cash equivalents, receivables, accounts payable, accrued expenses, and short-term debt approximate fair value because of the short-term maturity of these instruments.  The fair value estimates of long-term debt were based upon quotes from a major financial institution of recently observed trading levels of our Term Loan B debt.  The fair value estimates of foreign currency contract obligations are estimated from market quotes provided by a well-recognized national market data provider.  The fair value estimates of natural gas contracts are estimated using internal valuation models with verification by obtaining quotes from major financial institutions.  For natural gas swap transactions, fair value is calculated using NYMEX market quotes provided by a well-recognized national market data provider.  For natural gas option based strategies, fair value is calculated using an industry standard Black-Scholes model with market based inputs, including but not limited to, underlying asset price, strike price, implied volatility, discounted risk free rate and time to expiration, provided by a well-recognized national market data provider.  The fair value estimates for interest rate swap contracts are estimated by obtaining quotes from major financial institutions with verification by internal valuation models.
	Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date.  U.S. GAAP establishes a three-level fair value hierarchy that prioritizes the inputs used to measure fair value.  The three levels of inputs used to measure fair value are as follows:
		Level 1 — Quoted prices in active markets for identical assets or liabilities.
		Level 2 — Observable inputs other than quoted prices included in Level 1, such as quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data.
		Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.  This includes certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.
	Assets and liabilities are summarized below:
		31-Mar-14		31-Dec-13
		Fair value based on		Fair value based on
		Quoted,     active     markets	Other observable inputs	Quoted,     active     markets	Other observable inputs
		Level 1	Level 2	Level 1	Level 2
	Assets (Liabilities), net:
	Total long-term debt, including current portion	($470.80)	($595.70)	($470.90)	($594.30)
	Foreign currency contract obligations	6.4	-	5.2	-
	Natural gas contracts	-	0.6	-	0.5
	Interest rate swap contracts	-	-7.9	-	-7.9
	We do not have any financial assets or liabilities that are valued using Level 3 (unobservable) inputs.

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2014
Derivative Financial Instruments [Abstract]	'
Derivative Financial Instruments	'
	NOTE 14.  DERIVATIVE FINANCIAL INSTRUMENTS
	We are exposed to market risk from changes in foreign exchange rates, interest rates and commodity prices that could impact our results of operations, cash flows and financial condition.  We use forward swaps and option contracts to hedge these exposures.  Exposure to individual counterparties is controlled and derivative financial instruments are entered into with a diversified group of major financial institutions.  Forward swaps and option contracts are entered into for periods consistent with underlying exposure and do not constitute positions independent of those exposures.  At inception, hedges that we designate as hedging instruments are formally documented as either (1) a hedge of a forecasted transaction or “cash flow” hedge, or (2) a hedge of the fair value of a recognized liability or asset or “fair value” hedge.  We also formally assess both at inception and at least quarterly thereafter, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in either the fair value or cash flows of the hedged item.  If it is determined that a derivative ceases to be a highly effective hedge, or if the anticipated transaction is no longer probable of occurring, we discontinue hedge accounting, and any future mark-to-market adjustments are recognized in earnings.  We use derivative financial instruments as risk management tools and not for speculative trading purposes.
	Counterparty Risk
	We only enter into derivative transactions with established counterparties having a credit rating of BBB or better.  We monitor counterparty credit default swap levels and credit ratings on a regular basis.  All of our derivative transactions with counterparties are governed by master International Swap and Derivatives Association agreements (“ISDAs”) with netting arrangements.  These agreements can limit our exposure in situations where we have gain and loss positions outstanding with a single counterparty.  We do not post nor do we receive cash collateral with any counterparty for our derivative transactions.  These ISDAs do not have any credit contingent features; however, a default under our bank credit facility would trigger a default under these agreements.  Exposure to individual counterparties is controlled, and thus we consider the risk of counterparty default to be negligible.
	Commodity Price Risk
	We purchase natural gas for use in the manufacturing process and to heat many of our facilities.  As a result, we are exposed to fluctuations in the price of natural gas.  We have a policy to reduce cost volatility for North American natural gas purchases by purchasing natural gas forward contracts and swaps, purchased call options, and zero-cost collars up to 24 months forward to reduce our overall exposure to natural gas price movements.  The contracts are based on forecasted usage of natural gas measured in mmBtu’s.  There is a high correlation between the hedged item and the hedged instrument.  The gains and losses on these transactions offset gains and losses on the transactions being hedged.  These instruments are designated as cash flow hedges.  At March 31, 2014 and December 31, 2013, the notional amount of these hedges was $16.4 million and $20.1 million, respectively.  The mark-to-market gain or loss on qualifying hedges is included in other comprehensive income to the extent effective, and reclassified into cost of goods sold in the period during which the underlying gas is consumed.  The mark-to-market gains or losses on ineffective portions of hedges are recognized in cost of goods sold immediately.  The earnings impact of the ineffective portion of these hedges was not material for the first quarter of 2014 and 2013.
	Currency Rate Risk – Sales and Purchases
	We manufacture and sell our products in a number of countries throughout the world and, as a result, we are exposed to movements in foreign currency exchange rates.  To a large extent, our global manufacturing and sales provide a natural hedge of foreign currency exchange rate movement, as foreign currency expenses generally offset foreign currency revenues.  We manage our cash flow exposures on a net basis and use derivatives to hedge the majority of our unmatched foreign currency cash inflows and outflows.  As of March 31, 2014, our major, pre-hedging foreign currency exposures are to the Canadian dollar, the Chinese Renminbi and the Euro.
	We use foreign currency forward exchange contracts to reduce our exposure to the risk that the eventual net cash inflows and outflows resulting from the sale of products to foreign customers and purchases from foreign suppliers will be adversely affected by changes in exchange rates.  These derivative instruments are used for forecasted transactions and are classified as cash flow hedges.  Cash flow hedges are executed quarterly, generally up to 15 months forward, and allow us to further reduce our overall exposure to exchange rate movements, since gains and losses on these contracts offset gains and losses on the transactions being hedged.  The notional amount of these hedges was $143.5 million and $130.9 million at March 31, 2014 and December 31, 2013, respectively.  Gains and losses on these instruments are recorded in other comprehensive income, to the extent effective, until the underlying transaction is recognized in earnings.  The earnings impact of the ineffective portion of these hedges was not material for the first quarter of 2014 and 2013.
	Currency Rate Risk - Intercompany Loans and Dividends
	We may use foreign currency forward exchange contracts to hedge exposures created by cross-currency intercompany loans and dividends.  The translation adjustments related to these loans are recorded in other non-operating income or expense.  The offsetting gains or losses on the related derivative contracts are also recorded in other non-operating income or expense.  These contracts are decreased or increased as repayments are made or additional intercompany loans are extended or adjusted for intercompany dividend activity as necessary.  The notional amount of these hedges was $60.3 million and $36.7 million at March 31, 2014 and December 31, 2013, respectively.
	Interest Rate Risk
	We utilize interest rate swaps to minimize the fluctuations in earnings caused by interest rate volatility. Interest expense on variable-rate liabilities increases or decreases as a result of interest rate fluctuations. The following
	table summarizes our interest rate swaps:
	Trade Date		Notional Amount		Interest Rate Paid			Coverage Period	Risk Coverage
	31-Mar-11		$100.00		2.303	%		March 2011 to November 2015	Term Loan A
	31-Mar-11		$200.00		2.523	%		March 2011 to November 2015	Term Loan B
	27-Mar-12		$250.00		1.928	%		March 2012 to March 2018	Term Loan B
	27-Mar-12		$200.00		2.810	%		November 2015 to March 2018	Term Loan B
	16-Apr-13		$250.00		1.398	%		November 2015 to March 2018	Term Loan A
	Under the terms of the Term Loan A swaps we receive 3-month LIBOR and pay a fixed rate over the hedged period.  Under the terms of the Term Loan B swaps, we receive the greater of 3-month LIBOR or the 1% LIBOR Floor and pay a fixed rate over the hedged period.  These swaps are designated as cash flow hedges against changes in LIBOR for a portion of our variable rate debt.
	Financial Statement Impacts
	The following tables detail amounts related to our derivatives as of March 31, 2014 and December 31, 2013. Our derivative assets and liabilities not designated as hedging instruments were not material at March 31, 2014 and  December 31, 2013.  The derivative asset and liability amounts below are shown in gross amounts; we have not netted assets with liabilities.
		Derivative Assets					Derivative Liabilities
			Fair Value					Fair Value
		Balance Sheet   Location	31-Mar-14		31-Dec-13		Balance Sheet   Location	31-Mar-14	31-Dec-13
	Derivatives designated as hedging instruments
	Natural gas commodity contracts	Other current assets	$		$		Accounts payable and accrued expenses	$	$
			0.7		0.7			0.1	0.2
	Foreign exchange contracts	Other current assets	6.0		5.2		Accounts payable and accrued expenses	0.1	-
	Foreign exchange contracts	Other non-current assets	-		0.6		Other long-term liabilities	-	-
	Interest rate swap contracts	Other non-current assets	3.3		4.6		Other long-term liabilities	11.2	12.5
	Total derivatives designated as hedging instruments		$		$			$	$
			10.0		11.1			11.4	12.7
		Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (“AOCI”) (Effective Portion)(a)			Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
		Three Months Ended				Three Months Ended
		March 31,				March 31,
		2014		2013		2014		2013
	Derivatives in Cash Flow Hedging Relationships
	Natural gas commodity contracts	$		$	Cost of goods sold	$		($1.70)
		0.8		0.8		0.7
	Foreign exchange contracts – purchases	2.9		1.2	Cost of goods sold	0.5		-0.1
	Foreign exchange contracts – sales	-0.7		-	Net sales	1.5		-
	Interest rate swap contracts	-		2.5	Interest Expense	-		-
	Total	$		$		$		($1.80)
		3.0		4.5		2.7
		(a)		As of March 31, 2014 the amount of existing gains in AOCI expected to be recognized in earnings over the next twelve months is $6.2 million.
		Location of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion) (a)
	Derivatives in Cash Flow Hedging Relationships
	Natural gas commodity contracts	Cost of goods sold
	Foreign exchange contracts – purchases and sales	SG&A expense
	Interest rate swap contracts	Interest expense
		(a)		The amount recognized in income related to the ineffective portion of the hedging relationships was immaterial for the first quarters of 2014 and 2013.  No gains or losses are excluded from the assessment of the hedge effectiveness.
	The amount of pre-tax gain recognized in income for derivative instruments not designated as hedging instruments was $2.7 million for the first quarter of 2014.  No gain or loss was recognized in the first quarter of 2013.

Product_Warranties

Product Warranties	3 Months Ended
	Mar. 31, 2014
Product Warranties [Abstract]	'
Product Warranties	'
	NOTE 15.  PRODUCT WARRANTIES
	We provide direct customer and end-user warranties for our products.  These warranties cover manufacturing defects that would prevent the product from performing in line with its intended and marketed use.  The terms of these warranties vary by product.  We collect and analyze warranty claims data with a focus on the historic amount of claims, the products involved, the amount of time between the warranty claims and their respective sales and the amount of current sales.  The following table summarizes the activity for the accrual of product warranties for the first three months of 2014 and 2013:
		2014	2013
	Balance at January 1,	$	$
		9.9	11.5
	Reductions for payments	-2.9	-4.4
	Current year warranty accruals	2.5	3.7
	Preexisting warranty accrual changes	-	-0.3
	Balance at March 31,	$	$
		9.5	10.5
	The warranty provision and related reserve are recorded as a reduction of sales and accounts receivable.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Accumulated Other Comprehensive Income	'
	NOTE 16. ACCUMULATED OTHER COMPREHENSIVE INCOME
		Foreign Currency Translation Adjustments (1)	Derivative Adjustments (1)	Pension and Postretirement Adjustments (1)	Total Accumulated Other Comprehensive (Loss) (1)
	Balance, December 31, 2013	$	($0.70)	($392.20)	($371.60)
		21.3
	Other comprehensive income before reclassifications, net of tax expense of $ -, ($1.8),  ($0.1), and ($1.9)	-0.4	1.2	0.3	1.1
	Amounts reclassified from accumulated other comprehensive income (loss)	-	-1.8	6.8	5.0
	Net current period other comprehensive (loss) income	-0.4	-0.6	7.1	6.1
	Balance at March 31, 2014	$	($1.30)	($385.10)	($365.50)
		20.9
		Foreign Currency Translation Adjustments (1)	Derivative Adjustments (1)	Pension and Postretirement Adjustments (1)	Total Accumulated Other Comprehensive (Loss) (1)
	Balance, December 31, 2012	$	($19.20)	($482.30)	($471.40)
		30.1
	Other comprehensive income before reclassifications, net of tax (expense) benefit of $ -, ($1.4),  $0.2, and ($1.2)	-6.2	3.1	2.2	-0.9
	Amounts reclassified from accumulated other comprehensive income (loss)	-	1.2	6.7	7.9
	Net current period other comprehensive (loss) income	-6.2	4.3	8.9	7.0
	Balance at March 31, 2013	$	($14.90)	($473.40)	($464.40)
		23.9
	(1) Amounts are net of tax
		Amounts Reclassified from Accumulated Other Comprehensive Income		Affected Line Item in the Consolidated Statement of Earnings and Comprehensive Income
		Three Months Ended March 31,
		2014	2013
	Derivative Adjustments:
	Natural gas commodity contracts	($0.70)	$	Cost of goods sold
			1.7
	Foreign exchange contracts - purchases	-0.5	0.1	Cost of goods sold
	Foreign exchange contracts - sales	-1.5	-	Net sales
	Total (income) expense before tax	-2.7	1.8
	Tax impact	0.9	-0.6	Income tax expense
	Total (income) expense, net of tax	-1.8	1.2
	Pension and Postretirement Adjustments:
	Prior service cost amortization	0.2	0.2	Cost of goods sold
	Prior service cost amortization	0.2	0.1	SG&A expense
	Amortization of net actuarial loss	5.4	5.3	Cost of goods sold
	Amortization of net actuarial loss	4.7	4.7	SG&A expense
	Total expense before tax	10.5	10.3
	Tax impact	-3.7	-3.6	Income tax expense
	Total expense, net of tax	6.8	6.7
	Total reclassifications for the period	$	$
		5.0	7.9

Litigation_And_Related_Matters

Litigation And Related Matters	3 Months Ended
	Mar. 31, 2014
Litigation And Related Matters [Abstract]	'
Litigation And Related Matters	'
	NOTE 17. LITIGATION AND RELATED MATTERS
	ENVIRONMENTAL MATTERS
	Environmental Compliance
	Our manufacturing and research facilities are affected by various federal, state and local requirements relating to the discharge of materials and the protection of the environment.  We make expenditures necessary for compliance with applicable environmental requirements at each of our operating facilities.  These regulatory requirements continually change, therefore we cannot predict with certainty future expenditures associated with compliance with environmental requirements.
	Environmental Sites
	Summary
	We are actively involved in the investigation, closure and/or remediation of existing or potential environmental contamination under the Comprehensive Environmental Response, Compensation and Liability Act, and state or international Superfund and similar type environmental laws at several domestically- and internationally-owned, formerly owned and non-owned locations allegedly resulting from past industrial activity.  In a few cases, we are one of several potentially responsible parties and have agreed to jointly fund the required investigation and remediation, while preserving our defenses to the liability.  We may also have rights of contribution or reimbursement from other parties or coverage under applicable insurance policies.
	Estimates of our future liability at the environmental sites are based on evaluations of currently available facts regarding each individual site.  We consider factors such as our activities associated with the site, existing technology, presently enacted laws and regulations and prior company experience in remediating contaminated sites.  Although current law imposes joint and several liability on all parties at Superfund sites, our contribution to the remediation of these sites is expected to be limited by the number of other companies potentially liable for site remediation.  As a result, our estimated liability reflects only our expected share.  In determining the probability of contribution, we consider the solvency of other parties, the site activities of other parties, whether liability is being disputed, the terms of any existing agreements and experience with similar matters, and the effect of our Chapter 11 reorganization upon the validity of the claim.
	Specific Material Events
	St Helens, OR
	In August 2010, we entered into a Consent Order (the “Consent Order”) with the Oregon Department of Environmental Quality (“ODEQ”), along with Kaiser Gypsum Company, Inc. (“Kaiser”), and Owens Corning Sales LLC (“OC”), with respect to our St. Helens, OR Building Products facility, which was previously owned by Kaiser and then OC.  The Consent Order, which replaces a previous order of the ODEQ requiring us to investigate and remediate hazardous substances present at the facility, requires that we and Kaiser complete a remedial investigation and feasibility study (“RI/FS”) on the portion of the site owned by us (“Owned Property”), which is comprised of Upland and Lowland areas.  The Consent Order further requires us, Kaiser and OC to conduct an RI/FS in the In-Water area of the adjacent Scappoose Bay.  We are currently in an investigation phase for both the Owned Property and the Scappoose Bay and all draft investigative and risk assessment reports have been submitted for review to ODEQ. At this time, we have determined that it is probable that remedial action for certain portions of the Owned Property will be required.  The current estimate of our future liability at the site includes the known investigation work required by the Consent Order and the current projected cost of possible remedies for certain portions of the Owned Property.  At this time, we are unable to reasonably estimate any remediation costs that we may ultimately incur with respect to other portions of the Owned Property or the Scappoose Bay, although such costs may be material.  If additional investigative or remedial action is required by ODEQ, it could result in additional costs greater than the amounts currently estimated and those costs may be material.
	Costs and responsibilities for investigation, including the current RI/FS for the Owned Property continue to be shared with Kaiser pursuant to a cost sharing agreement with Kaiser.  Contemporaneously with the execution of the Consent Order, we, Kaiser and OC also entered into a separate cost sharing agreement for both the investigation and possible remediation of the Scappoose Bay. Kaiser’s shares under the cost sharing agreements are being funded by certain insurance policies, which comprise substantially all of Kaiser’s assets. If Kaiser and OC are unwilling or unable to fulfill their obligations under the cost sharing agreements, or seek to contest or challenge the allocations, or if Kaiser’s insurance policies are unable to fund Kaiser’s shares, it could result in additional cost to us greater than the amounts currently estimated and those costs may be material.
	The principal contaminants at the St. Helens site are arsenic and dioxin compounds from historic operations by prior owners of the plant.  As part of the investigation on the site pursuant to the Consent Order, we conducted an analysis of the raw materials used in our manufacturing processes at the St. Helens facility to identify possible sources of these same contaminants. Our testing found low levels of naturally occurring dioxin in sourced clay, known as ball clay, used in the production of some of our fire-retardant products at our St. Helens manufacturing facility. Based on the data from the soil and sediment samples from our St. Helens property and the data from the ball clay, we do not believe that the presence of dioxin in our raw material will have a material impact on our ultimate liability at the site. In addition, consistent with our health and safety policies, we tested employee exposure levels at two facilities representative of our handling procedures at all plants that use this ball clay and, as a result of such testing, do not believe that the ball clay poses a hazard to our employees based on applicable regulatory standards.  Based on the manufacturing process and the amount of raw material utilized, we also believe that the dioxin levels in our finished products do not pose a hazard to installers or consumers. While we have not received any claims related to this raw material or our fire-retardant products, there can be no assurance that the raw material or the finished products will not become the subject of legal claims or regulatory actions or that such claims or actions will not have a material adverse effect on our financial condition or results of operations.
	Macon, GA
	The U.S. Environmental Protection Agency (“EPA”) has listed two landfills located on a portion of our Building Products facility in Macon, GA, along with the former Macon Naval Ordnance Plant landfill adjacent to our property, and portions of Rocky Creek (collectively, the “Macon Site”) as a Superfund site on the National Priorities List due to the presence of contaminants, most notably PCBs.
	In September 2010, we entered into an Administrative Order on Consent for a Removal Action with the EPA to investigate PCB contamination in one of the landfills on our property, the Wastewater Treatment Plant Landfill (the “WWTP Landfill”).  We concluded the investigative phase of the Removal Action for the WWTP Landfill and submitted our final Engineering Evaluation/Cost Analysis (“EE/CA”) to the EPA.  The EPA approved the EE/CA and issued an Action Memorandum in July 2013 selecting our recommended remedy for the Removal Action.  We are currently negotiating an Administrative Order on Consent for Removal Action and will begin remedy design and implementation work once finalized.  Our estimate of future liability includes costs for the remedial work for the WWTP Landfill.
	It is probable that we will incur field investigation, engineering and oversight costs associated with a RI/FS with respect to the remainder of the Superfund site, which includes the other landfill on our property, as well as areas on and adjacent to Armstrong’s property and Rocky Creek (the “Remaining Site”).  We have not yet entered into an Order with the EPA for the Remaining Site and, as a result, have not yet commenced an investigation of this portion of the site.  Accordingly, we are able to estimate only a small portion of the probable costs that may be associated with the RI/FS for the Remaining Site.  We anticipate, however, that the EPA may require significant investigative work for the Remaining Site and that we may ultimately incur costs in remediating any contamination discovered during the RI/FS.  We are unable to reasonably estimate the total costs associated with the investigation work or any resulting remediation therefrom, although such amounts may be material.
	Elizabeth City, NC
	This site is a former cabinet manufacturing facility that was operated by Triangle Pacific Corporation, now known as Armstrong Wood Products, Inc. (“Triangle Pacific”) from 1977 until 1996.  The site was formerly owned by the U.S. Navy (“Navy”) and Westinghouse, now CBS Corporation (“CBS”).  We assumed ownership of the site when we acquired the stock of Triangle Pacific in 1998. Prior to our acquisition, the NC Department of Environment and Natural Resources listed the site as a hazardous waste site.  In 1997, Triangle Pacific entered into a cost sharing agreement with Westinghouse whereby the parties agreed to share equally in costs associated with investigation and potential remediation.  In 2000, Triangle Pacific and CBS entered into an RI/FS with the EPA for the site.  In 2007, we and CBS entered into an agreement with the Navy whereby the Navy agreed to pay one third of defined past and future investigative costs up to a certain amount, which has now been exhausted.   Although the parties initially submitted the RI/FS work plan to the EPA in 2004, the EPA did not approve the RI/FS work plan until August 2011. We submitted the draft Remedial Investigative and Risk Assessments in the first quarter of 2014. We are unable to reasonably estimate any additional investigative costs or determine whether remediation will be required. If remediation is required, the related costs may be material, although we expect these costs to be shared with CBS and the Navy.
	Summary of Financial Position
	Liabilities of $7.9 million at March 31, 2014 and $8.3 million at December 31, 2013 were recorded for potential environmental liabilities, on a global basis, that we consider probable and for which a reasonable estimate of the probable liability could be made.  Where existing data is sufficient to estimate the liability, that estimate has been used; where only a range of probable liabilities is available and no amount within that range is more likely than any other, the lower end of the range has been used.  As assessments and remediation activities progress at each site, these liabilities are reviewed to reflect new information as it becomes available.  These liabilities are undiscounted.
	The estimated liabilities above do not take into account any claims for recoveries from insurance or third parties.  It is our policy to record probable recoveries that are either available through settlement or anticipated to be recovered through negotiation or litigation as assets in the Condensed Consolidated Balance Sheets.  No material amounts were recorded for probable recoveries at March 31, 2014 or December 31, 2013.
	Actual costs to be incurred at identified sites may vary from our estimates.  Based on our knowledge of the identified sites, it is not possible to reasonably estimate future costs in excess of amounts already recognized.
	MULTI-EMPLOYER PENSION WITHDRAWAL LIABILITY CLAIM
	On February 15, 2013, we received a demand notice from the Carpenters Labor-Management Pension Fund (the “Fund”) of a deemed withdrawal relating to the sale of our cabinets business to AIP in 2012.  The Fund claims that the sale triggered a withdrawal liability to the Fund relating to unfunded vested plan benefits attributable to our role as a contributing employer under the Employee Retirement Income Security Act of 1974 and the Multiemployer Pension Plan Amendments Act of 1980, notwithstanding the assumption and maintenance by AIP of ongoing contribution obligations under the applicable union bargaining agreement.  The claimed amount is $15.2 million, payable in a lump-sum or over 20 years on a quarterly basis.  Pursuant to the demand notice, we provided information and reviewed the determination with the Fund, and have made regular quarterly payments under protest pending resolution of the dispute.  We have the opportunity to identify any inaccuracies in the determination of the claimed amount of unfunded vested plan benefits allocated to us, and to arbitrate the matter.  We are pursuing both of these opportunities and have notified the Fund of our intent to proceed to arbitration, which we expect to occur in 2014.
	On September 24, 2013, the Fund informed us that it disagrees with our position that the sale transaction did not trigger a withdrawal liability.  In March 2014, the Fund informed us that AIP withdrew from the Fund effective December 12, 2013.  Under our sale agreements with AIP, we have agreed to indemnify AIP with respect to a portion (not to exceed $10.0 million) of any potential withdrawal liability that may be incurred by AIP in the event of a withdrawal by AIP from the Fund, but such indemnities only apply in the event that the sale of assets transaction itself did not trigger withdrawal liability.
	A charge of $7.5 million was recorded during the third quarter of 2013 within Discontinued Operations (due to the association with the divestiture of the cabinets business).  As of March 31, 2014, we have a liability of $7.0 million relative to this matter.  Adjustments to our liability could be recorded based upon completion of our actuarial analysis of unfunded vested plan benefits and the arbitration process. We do not believe that the ultimate disposition of this matter will have a material adverse effect on our financial condition, liquidity or results of operations.
	ANTIDUMPING AND COUNTERVAILING DUTY CASES
	In October 2010, a coalition of U.S. producers of multilayered wood flooring (not including Armstrong) filed petitions seeking antidumping (“AD”) and countervailing duties (“CVD”) with the United States Department of Commerce (“DOC”) and the United States International Trade Commission (“ITC”) against imports of multilayered hardwood flooring from China.  The AD petition requested duties of up to 269% on imports of multilayered hardwood flooring, which it claimed were needed to offset unfair pricing from Chinese imports that injure the U.S. industry.  The CVD petition requested an unspecified level of duties be imposed on importers to offset alleged unfair subsidies provided by the Chinese government.
	We produce multilayered wood flooring domestically and import multilayered wood flooring from third party suppliers in China.  We also have a plant in Kunshan China (“Armstrong Kunshan”) that manufactures multilayered wood flooring for export to the U.S.  We were specifically mentioned in the AD and CVD petitions as an importer.  Under the U.S. AD and CVD laws, a U.S. importer may be responsible for the payment of any antidumping and countervailing duties.
	In response to the petitions, the DOC conducted investigations and issued CVD and AD orders on December 8, 2011. Pursuant to the orders, Armstrong Kunshan’s final rates were 1.5% (CVD) and 3.31% (AD).  These rates became effective in the form of additional duty deposits and applied retroactively as of April 6, 2011 (CVD) and May 26, 2011 (AD).
	Following the issuance of the CVD and AD orders, appeals were filed by several parties challenging various aspects of the determinations by both the DOC and the ITC, including certain aspects that may impact the validity of the orders and the applicable rates. Armstrong is participating in two of these appeals, which are currently ongoing and are expected to conclude in 2014.
	Additionally, the DOC is currently conducting annual administrative reviews of the CVD and AD final rates. In 2013, Armstrong Kunshan was selected for individual review as a mandatory respondent in the first annual administrative review. As part of that review process, which is scheduled to conclude in 2014, Armstrong Kunshan’s original CVD and AD rates may be changed and applied retroactively to the DOC’s preliminary determinations in the original investigation. On November 25, 2013, the DOC issued a preliminary AD rate of 8.87% for Armstrong Kunshan as part of the first annual administrative review of the AD rates. On January 16, 2014, the DOC issued a preliminary CVD rate of 0.9% for Armstrong Kunshan as part of the first annual administrative review of the CVD rates.  These preliminary review rates are estimates only and the final AD and CVD review rates are expected to be issued in second quarter of 2014.  While we are unable to predict the final review rates, based on the preliminary review rates we do not expect that this matter will have a material impact on our financial condition, results of operations or cash flows.
	OTHER CLAIMS
	We are involved in various lawsuits, claims, investigations and other legal matters from time to time that arise in the ordinary course of conducting business, including matters involving our products, intellectual property, relationships with suppliers, distributors, relationships with competitors, employees and other matters.  While complete assurance cannot be given to the outcome of these proceedings, we do not believe that any of these matters, individually or in the aggregate, will have a material adverse effect on our financial condition, liquidity or results of operations.

Special_Cash_Dividend

Special Cash Dividend	3 Months Ended
	Mar. 31, 2014
Special Cash Dividend [Abstract]	'
Special Cash Dividend	'
	NOTE 18.  SPECIAL CASH DIVIDEND
	On March 23, 2012, our Board of Directors declared a special cash dividend in the amount of $8.55 per share, or approximately $508 million in the aggregate, of which $502.9 million was paid on April 10, 2012 to the shareholders of record as of April 3, 2012.  Additional payments of $3.7 million have been made through the end of the first quarter of 2014.  The remaining dividends will be paid when the underlying employee awards vest, while vested director awards will be paid upon their separation from service on the Board of Directors.  Most of the outstanding balance at March 31, 2014 is expected to be paid in the first quarter of 2015.  The dividend was recorded as a reduction of retained earnings to the extent that retained earnings were available at the dividend declaration date.  Dividends in excess of retained earnings were recorded as a reduction of capital in excess of par value.

Earnings_Per_Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	NOTE 19.  EARNINGS PER SHARE
	Earnings per share (“EPS”) components may not add due to rounding.
	The following table is a reconciliation of earnings to earnings attributable to common shares used in our basic and diluted EPS calculations for the three month periods ended March 31, 2014 and 2013:
		Three Months Ended
		March 31,
		2014	2013
	Earnings from continuing operations	$	$
		16.9	3.2
	Earnings allocated to participating non-vested
	share awards	-0.1	-
	Earnings from continuing operations attributable
	common shares	$	$
		16.8	3.2
	The following table is a reconciliation of basic shares outstanding to diluted shares outstanding for the three month periods ended March 31, 2014 and 2013 (shares in millions):
		Three Months Ended
		March 31,
		2014	2013
	Basic shares outstanding	54.8	59.2
	Dilutive effect of stock option awards	0.5	0.6
	Diluted shares outstanding	55.3	59.8
	At March 31, 2014 and 2013, there were no anti-dilutive options excluded from the computation of diluted EPS.

Segment_Results_Tables

Segment Results (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Results [Abstract]	'
Schedule Of Net Sales To External Customers	'
		Three Months Ended
		March 31,
		2014	2013
	Net sales to external customers
	Building Products	$	$
		308.2	292.8
	Resilient Flooring	208.1	214.8
	Wood Flooring	118.1	114.7
	Total net sales to external customers	$	$
		634.4	622.3
Schedule Of Segment Operating Income (Loss)	'
		Three Months Ended
		March 31,
		2014	2013
	Segment operating income (loss)
	Building Products	$	$
		57.8	59.3
	Resilient Flooring	9.4	6.4
	Wood Flooring	5.1	0.5
	Unallocated Corporate (expense)	-19.8	-19.2
	Total consolidated operating income	$	$
		52.5	47.0
Reconciliation Of Total Consolidated Operating Income To Earnings Before Income Taxes	'
		Three Months Ended
		March 31,
		2014	2013
	Total consolidated operating income	$	$
		52.5	47.0
	Interest expense	11.6	33.2
	Other non-operating expense	5.3	-
	Other non-operating income	-0.6	-1.3
	Earnings from continuing operations before income taxes	$	$
		36.2	15.1
Reconciliation Of Total Segment Assets To Total Consolidated Assets	'
		31-Mar-14	31-Dec-13
	Segment assets
	Building Products	$	$
		1,087.3	1,071.9
	Resilient Flooring	680.2	635.2
	Wood Flooring	354.6	335.2
	Unallocated Corporate	869.4	874.3
	Total consolidated assets	$	$
		2,991.5	2,916.6

Accounts_And_Notes_Receivable_

Accounts And Notes Receivable (Tables)	3 Months Ended
	Mar. 31, 2014
Accounts And Notes Receivable [Abstract]	'
Schedule Of Accounts And Notes Receivable	'
		31-Mar-14	31-Dec-13
	Customer receivables	$	$
		263.1	242.7
	Customer notes	1.3	1.6
	Miscellaneous receivables	7.3	5.9
	Less allowance for warranties, discounts and losses	-27.4	-28
	Accounts and notes receivable, net	$	$
		244.3	222.2

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventories [Abstract]	'
Schedule Of Inventories	'
		31-Mar-14	31-Dec-13
	Finished goods	$	$
		317.3	292.8
	Goods in process	34.9	29.2
	Raw materials and supplies	133.2	118.6
	Less LIFO and other reserves	-56.9	-58.9
	Total inventories, net	$	$
		428.5	381.7

Other_Current_Assets_Tables

Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Other Current Assets [Abstract]	'
Schedule Of Other Current Assets	'
		31-Mar-14	31-Dec-13
	Prepaid expenses	$	$
		49.5	46.0
	Fair value of derivative assets	7.4	5.9
	Other	9.6	3.6
	Total other current assets	$	$
		66.5	55.5

Equity_Investments_Tables

Equity Investments (Tables)	3 Months Ended
	Mar. 31, 2014
Equity Investments [Abstract]	'
Summary Of Investment In Joint Venture, Income Statement Data	'
		Three Months Ended
		March 31,
		2014	2013
	Net sales	$	$
		92.3	91.9
	Gross profit	43.5	43.3
	Net earnings	32.2	33.8

Intangible_Assets_Tables

Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Intangible Assets [Abstract]	'
Schedule Of Intangible Assets	'
			31-Mar-14		31-Dec-13
		Estimated Useful Life	Gross Carrying Amount	Accumulated Amortization	Gross Carrying Amount	Accumulated Amortization
	Amortizing intangible assets
	Customer relationships	20 years	$	$	$	$
			165.5	62.2	165.5	60.2
	Developed technology	15 years	83.3	40.9	83.1	39.4
	Other	Various	21.2	2.0	21.5	1.9
	Total		$	$	$	$
			270.0	105.1	270.1	101.5
	Non-amortizing intangible assets
	Trademarks and brand names	Indefinite	354.6		354.3
	Total intangible assets		$		$
			624.6		624.4
Schedule Of Amortization Expense	'
		Three Months Ended
		March 31,
		2014	2013
	Amortization expense	$	$
		3.6	3.6

Income_Tax_Expense_Tables

Income Tax Expense (Tables)	3 Months Ended
	Mar. 31, 2014
Income Tax Expense [Abstract]	'
Schedule Of Income Tax Expense (Benefit)	'
		Three Months Ended
		March 31,
		2014	2013
	Earnings from continuing operations before income taxes	$	$
		36.2	15.1
	Income tax expense	19.3	11.9
	Effective tax rate	53.3%	78.8%

Pensions_And_Other_Benefit_Pro1

Pensions And Other Benefit Programs (Tables)	3 Months Ended
	Mar. 31, 2014
Pensions And Other Benefit Programs [Abstract]	'
Schedule Of Periodic Benefit Costs (Credits)	'
		Three Months Ended
		March 31,
		2014	2013
	U.S. defined-benefit plans:
	Pension benefits
	Service cost of benefits earned during the period	$	$
		3.6	4.2
	Interest cost on projected benefit obligation	21.4	19.9
	Expected return on plan assets	-34.8	-34.1
	Amortization of prior service cost	0.5	0.5
	Amortization of net actuarial loss	10.6	10.2
	Net periodic pension cost	$	$
		1.3	0.7
	Retiree health and life insurance benefits
	Service cost of benefits earned during the period	$	$
		0.2	0.3
	Interest cost on projected benefit obligation	2.7	2.4
	Amortization of prior service credit	-0.1	-0.2
	Amortization of net actuarial gain	-1	-0.9
	Net periodic postretirement benefit cost	$	$
		1.8	1.6
	Non-U.S. defined-benefit pension plans
	Service cost of benefits earned during the period	$	$
		0.8	0.7
	Interest cost on projected benefit obligation	3.5	3.3
	Expected return on plan assets	-2.9	-2.4
	Amortization of net actuarial loss	0.5	0.7
	Net periodic pension cost	$	$
		1.9	2.3

Financial_Instruments_Tables

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Financial Instruments [Abstract]	'
Estimated Fair Value Of Financial Instruments	'
		31-Mar-14		31-Dec-13
		Carrying amount	Estimated fair value	Carrying amount	Estimated fair value
	Assets (Liabilities), net:
	Total long-term debt, including current portion	($1,065.30)	($1,066.50)	($1,066.50)	($1,065.20)
	Foreign currency contract obligations	6.4	6.4	5.2	5.2
	Natural gas contracts	0.6	0.6	0.5	0.5
	Interest rate swap contracts	-7.9	-7.9	-7.9	-7.9
Summary Of Assets And Liabilities	'
		31-Mar-14		31-Dec-13
		Fair value based on		Fair value based on
		Quoted,     active     markets	Other observable inputs	Quoted,     active     markets	Other observable inputs
		Level 1	Level 2	Level 1	Level 2
	Assets (Liabilities), net:
	Total long-term debt, including current portion	($470.80)	($595.70)	($470.90)	($594.30)
	Foreign currency contract obligations	6.4	-	5.2	-
	Natural gas contracts	-	0.6	-	0.5
	Interest rate swap contracts	-	-7.9	-	-7.9

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Financial Instruments [Abstract]	'
Summary Of Interest Rate Swaps	'
	Trade Date		Notional Amount		Interest Rate Paid			Coverage Period	Risk Coverage
	31-Mar-11		$100.00		2.303	%		March 2011 to November 2015	Term Loan A
	31-Mar-11		$200.00		2.523	%		March 2011 to November 2015	Term Loan B
	27-Mar-12		$250.00		1.928	%		March 2012 to March 2018	Term Loan B
	27-Mar-12		$200.00		2.810	%		November 2015 to March 2018	Term Loan B
	16-Apr-13		$250.00		1.398	%		November 2015 to March 2018	Term Loan A
Summary Of The Fair Value Of Derivative Instruments On The Consolidated Balance Sheet	'
		Derivative Assets					Derivative Liabilities
			Fair Value					Fair Value
		Balance Sheet   Location	31-Mar-14		31-Dec-13		Balance Sheet   Location	31-Mar-14	31-Dec-13
	Derivatives designated as hedging instruments
	Natural gas commodity contracts	Other current assets	$		$		Accounts payable and accrued expenses	$	$
			0.7		0.7			0.1	0.2
	Foreign exchange contracts	Other current assets	6.0		5.2		Accounts payable and accrued expenses	0.1	-
	Foreign exchange contracts	Other non-current assets	-		0.6		Other long-term liabilities	-	-
	Interest rate swap contracts	Other non-current assets	3.3		4.6		Other long-term liabilities	11.2	12.5
	Total derivatives designated as hedging instruments		$		$			$	$
			10.0		11.1			11.4	12.7
Summary Of The Amount Of (Loss) Recognized In Accumulated Other Comprehensive Income	'
		Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income (“AOCI”) (Effective Portion)(a)			Location of Gain (Loss) Reclassified from AOCI into Income (Effective Portion)	Gain (Loss) Reclassified from AOCI into Income (Effective Portion)
		Three Months Ended				Three Months Ended
		March 31,				March 31,
		2014		2013		2014		2013
	Derivatives in Cash Flow Hedging Relationships
	Natural gas commodity contracts	$		$	Cost of goods sold	$		($1.70)
		0.8		0.8		0.7
	Foreign exchange contracts – purchases	2.9		1.2	Cost of goods sold	0.5		-0.1
	Foreign exchange contracts – sales	-0.7		-	Net sales	1.5		-
	Interest rate swap contracts	-		2.5	Interest Expense	-		-
	Total	$		$		$		($1.80)
		3.0		4.5		2.7
	As of March 31, 2014 the amount of existing gains in AOCI expected to be recognized in earnings over the next twelve months is $6.2 million.
Summary Of Location Of Cash Flow Hedging Gain (Loss) Recognized In Income	'
		Location of Gain (Loss) Recognized in Income on Derivatives (Ineffective Portion) (a)
	Derivatives in Cash Flow Hedging Relationships
	Natural gas commodity contracts	Cost of goods sold
	Foreign exchange contracts – purchases and sales	SG&A expense
	Interest rate swap contracts	Interest expense
		(a)		The amount recognized in income related to the ineffective portion of the hedging relationships was immaterial for the first quarters of 2014 and 2013.  No gains or losses are excluded from the assessment of the hedge effectiveness.

Product_Warranties_Tables

Product Warranties (Tables)	3 Months Ended
	Mar. 31, 2014
Product Warranties [Abstract]	'
Summary Of Activity For The Accrual Of Product Warranties	'
		2014	2013
	Balance at January 1,	$	$
		9.9	11.5
	Reductions for payments	-2.9	-4.4
	Current year warranty accruals	2.5	3.7
	Preexisting warranty accrual changes	-	-0.3
	Balance at March 31,	$	$
		9.5	10.5

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income [Abstract]	'
Components Of Accumulated Other Comprehensive Income (Loss)	'
		Foreign Currency Translation Adjustments (1)	Derivative Adjustments (1)	Pension and Postretirement Adjustments (1)	Total Accumulated Other Comprehensive (Loss) (1)
	Balance, December 31, 2013	$	($0.70)	($392.20)	($371.60)
		21.3
	Other comprehensive income before reclassifications, net of tax expense of $ -, ($1.8),  ($0.1), and ($1.9)	-0.4	1.2	0.3	1.1
	Amounts reclassified from accumulated other comprehensive income (loss)	-	-1.8	6.8	5.0
	Net current period other comprehensive (loss) income	-0.4	-0.6	7.1	6.1
	Balance at March 31, 2014	$	($1.30)	($385.10)	($365.50)
		20.9
		Foreign Currency Translation Adjustments (1)	Derivative Adjustments (1)	Pension and Postretirement Adjustments (1)	Total Accumulated Other Comprehensive (Loss) (1)
	Balance, December 31, 2012	$	($19.20)	($482.30)	($471.40)
		30.1
	Other comprehensive income before reclassifications, net of tax (expense) benefit of $ -, ($1.4),  $0.2, and ($1.2)	-6.2	3.1	2.2	-0.9
	Amounts reclassified from accumulated other comprehensive income (loss)	-	1.2	6.7	7.9
	Net current period other comprehensive (loss) income	-6.2	4.3	8.9	7.0
	Balance at March 31, 2013	$	($14.90)	($473.40)	($464.40)
		23.9
	(1) Amounts are net of tax
Reclassification Out Of Accumulated Other Comprehensive Income	'
		Amounts Reclassified from Accumulated Other Comprehensive Income		Affected Line Item in the Consolidated Statement of Earnings and Comprehensive Income
		Three Months Ended March 31,
		2014	2013
	Derivative Adjustments:
	Natural gas commodity contracts	($0.70)	$	Cost of goods sold
			1.7
	Foreign exchange contracts - purchases	-0.5	0.1	Cost of goods sold
	Foreign exchange contracts - sales	-1.5	-	Net sales
	Total (income) expense before tax	-2.7	1.8
	Tax impact	0.9	-0.6	Income tax expense
	Total (income) expense, net of tax	-1.8	1.2
	Pension and Postretirement Adjustments:
	Prior service cost amortization	0.2	0.2	Cost of goods sold
	Prior service cost amortization	0.2	0.1	SG&A expense
	Amortization of net actuarial loss	5.4	5.3	Cost of goods sold
	Amortization of net actuarial loss	4.7	4.7	SG&A expense
	Total expense before tax	10.5	10.3
	Tax impact	-3.7	-3.6	Income tax expense
	Total expense, net of tax	6.8	6.7
	Total reclassifications for the period	$	$
		5.0	7.9

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Reconciliation Of Net Earnings To Net Earnings Attributable To Common Shares Used In Basic And Diluted Calculation	'
		Three Months Ended
		March 31,
		2014	2013
	Earnings from continuing operations	$	$
		16.9	3.2
	Earnings allocated to participating non-vested
	share awards	-0.1	-
	Earnings from continuing operations attributable
	common shares	$	$
		16.8	3.2
Reconciliation Of Basic Shares Outstanding To Diluted Shares Outstanding	'
		Three Months Ended
		March 31,
		2014	2013
	Basic shares outstanding	54.8	59.2
	Dilutive effect of stock option awards	0.5	0.6
	Diluted shares outstanding	55.3	59.8

Business_And_Basis_Of_Presenta1

Business And Basis Of Presentation (Details) (USD $)	3 Months Ended		3 Months Ended		1 Months Ended	3 Months Ended				12 Months Ended	1 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2012	Mar. 31, 2014	Mar. 31, 2014	Aug. 31, 2009	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012	Dec. 31, 2013	Aug. 31, 2009
			Asbestos PI Trust [Member]	Armor TPG Holdings LLC [Member]	Asbestos PI Trust And TPG [Member]	Asbestos PI Trust And TPG [Member]	Asbestos PI Trust And TPG [Member]	Asbestos PI Trust And TPG [Member]	Asbestos PI Trust And TPG [Member]	Asbestos PI Trust And TPG [Member]	Additional Economic Interest [Member]
											Asbestos PI Trust And TPG [Member]
Business And Basis Of Presentation [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Bankruptcy voluntary petition filed for relief date	1-Dec-00	'	'	'	'	'	'	'	'	'	'
Bankruptcy court where petition filed	'United States Bankruptcy Court for the District of Delaware	'	'	'	'	'	'	'	'	'	'
Plan of Reorganization approved date	2-Oct-06	'	'	'	'	'	'	'	'	'	'
Entity arising from bankruptcy proceeding	'Asbestos Personal Injury Settlement Trust (the "Asbestos PI Trust")	'	'	'	'	'	'	'	'	'	'
Purchase of common stock by major shareholder	'	'	'	'	7,000,000	'	'	'	'	'	1,039,777
Sale of stock by investee	'	'	1,845,023	2,054,977	'	3,900,000	6,000,000	12,057,382	5,980,000	'	'
Payment to acquire shares held in treasury	'	'	'	'	'	'	'	'	'	$261.40	'
Treasury shares acquired	'	'	'	'	'	'	'	'	'	5,057,382	'
Holding percentage in Armstrong World Industries, Inc.	'	'	17.00%	0.00%	'	'	'	'	'	'	'
Sale price of cabinet business	'	27	'	'	'	'	'	'	'	'	'
Increase in deferred tax liability	$40	'	'	'	'	'	'	'	'	'	'

Segment_Results_Schedule_Of_Ne

Segment Results (Schedule Of Net Sales To External Customers) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]	'	'
Net sales to external customers	$634.40	$622.30
Building Products [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net sales to external customers	308.2	292.8
Resilient Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net sales to external customers	208.1	214.8
Wood Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Net sales to external customers	$118.10	$114.70

Segment_Results_Schedule_Of_Se

Segment Results (Schedule Of Segment Operating Income (Loss)) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]	'	'
Segment operating income (loss)	$52.50	$47
Building Products [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Segment operating income (loss)	57.8	59.3
Resilient Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Segment operating income (loss)	9.4	6.4
Wood Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Segment operating income (loss)	5.1	0.5
Unallocated Corporate Segment [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Segment operating income (loss)	($19.80)	($19.20)

Segment_Results_Reconciliation

Segment Results (Reconciliation Of Total Consolidated Operating Income To Earnings Before Income Taxes) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Results [Abstract]	'	'
Total consolidated operating income	$52.50	$47
Interest expense	11.6	33.2
Other non-operating expense	5.3	'
Other non-operating income	-0.6	-1.3
Earnings from continuing operations before income taxes	$36.20	$15.10

Segment_Results_Reconciliation1

Segment Results (Reconciliation Of Total Segment Assets To Total Consolidated Assets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Segment Reporting Information [Line Items]	'	'
Total consolidated assets	$2,991.50	$2,916.60
Building Products [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total consolidated assets	1,087.30	1,071.90
Resilient Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total consolidated assets	680.2	635.2
Wood Flooring [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total consolidated assets	354.6	335.2
Unallocated Corporate Segment [Member]	'	'
Segment Reporting Information [Line Items]	'	'
Total consolidated assets	$869.40	$874.30

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	1 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013
Discontinued Operations [Abstract]	'	'	'	'	'
Proceeds from sale of operations	$27	'	'	'	'
Impairment charges	'	'	'	17.5	'
Multi-employer pension plan withdrawal liability	'	7	'	'	7.5
Pre tax loss	'	'	-0.3	'	'
Loss net of tax	'	'	($0.20)	'	'

Accounts_And_Notes_Receivable_1

Accounts And Notes Receivable (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Accounts And Notes Receivable [Abstract]	'	'
Customer receivables	$263.10	$242.70
Customer notes	1.3	1.6
Miscellaneous receivables	7.3	5.9
Less allowance for warranties, discounts and losses	-27.4	-28
Accounts and notes receivable, net	$244.30	$222.20

Inventories_Schedule_Of_Invent

Inventories (Schedule Of Inventories) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Inventories [Abstract]	'	'
Finished goods	$317.30	$292.80
Goods in process	34.9	29.2
Raw materials and supplies	133.2	118.6
Less LIFO and other reserves	-56.9	-58.9
Total inventories, net	$428.50	$381.70

Other_Current_Assets_Details

Other Current Assets (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Other Current Assets [Abstract]	'	'
Prepaid expenses	$49.50	$46
Fair value of derivative assets	7.4	5.9
Other	9.6	3.6
Total other current assets	$66.50	$55.50

Equity_Investments_Narrative_D

Equity Investments (Narrative) (Details) (WAVE [Member])	Mar. 31, 2014
WAVE [Member]	'
Schedule of Equity Method Investments [Line Items]	'
Equity interest percentage	50.00%

Equity_Investments_Summary_Of_

Equity Investments (Summary Of Investment In Joint Venture, Income Statement Data) (Details) (WAVE [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
WAVE [Member]	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Net sales	$92.30	$91.90
Gross profit	43.5	43.3
Net earnings	$32.20	$33.80

Intangible_Assets_Schedule_Of_

Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Schedule Of Intangible Assets [Line Items]	'	'
Amortizing intangible assets, Gross Carrying Amount	$270	$270.10
Amortizing intangible assets, Accumulated Amortization	105.1	101.5
Total intangible assets	624.6	624.4
Trademarks And Brand Names [Member]	'	'
Schedule Of Intangible Assets [Line Items]	'	'
Non-amortizing intangible assets, Estimated Useful Life	'Indefinite	'
Non-amortizing intangible assets, Gross Carrying Amount	354.6	354.3
Customer Relationships [Member]	'	'
Schedule Of Intangible Assets [Line Items]	'	'
Amortizing intangible assets, Estimated Useful Life	'20 years	'
Amortizing intangible assets, Gross Carrying Amount	165.5	165.5
Amortizing intangible assets, Accumulated Amortization	62.2	60.2
Developed Technology [Member]	'	'
Schedule Of Intangible Assets [Line Items]	'	'
Amortizing intangible assets, Estimated Useful Life	'15 years	'
Amortizing intangible assets, Gross Carrying Amount	83.3	83.1
Amortizing intangible assets, Accumulated Amortization	40.9	39.4
Other [Member]	'	'
Schedule Of Intangible Assets [Line Items]	'	'
Amortizing intangible assets, Estimated Useful Life, Other	'Various	'
Amortizing intangible assets, Gross Carrying Amount	21.2	21.5
Amortizing intangible assets, Accumulated Amortization	$2	$1.90

Intangible_Assets_Schedule_Of_1

Intangible Assets (Schedule Of Amortization Expense) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Intangible Assets [Abstract]	'	'
Amortization expense	$3.60	$3.60

Severances_And_Related_Costs_D

Severances And Related Costs (Details) (Resilient Flooring [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013
	employee
Europe [Member]	'
Schedule Of Severances And Related Costs [Line Items]	'
Severance and related costs	$5.20
Positions eliminated	40
Europe [Member] | Cost Of Goods Sold [Member]	'
Schedule Of Severances And Related Costs [Line Items]	'
Severance and related costs	1.8
Europe [Member] | SG&A Expense [Member]	'
Schedule Of Severances And Related Costs [Line Items]	'
Severance and related costs	1
Pacific Rim [Member]	'
Schedule Of Severances And Related Costs [Line Items]	'
Positions eliminated	40
Pacific Rim [Member] | Cost Of Goods Sold [Member]	'
Schedule Of Severances And Related Costs [Line Items]	'
Severance and related costs	$2.40

Income_Tax_Expense_Details

Income Tax Expense (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Tax Expense [Abstract]	'	'
Earnings from continuing operations before income taxes	$36.20	$15.10
Income tax expense	$19.30	$11.90
Effective tax rate	53.30%	78.80%

Debt_Details

Debt (Details) (USD $)

0 Months Ended

3 Months Ended

0 Months Ended

3 Months Ended

3 Months Ended

3 Months Ended

In Millions, unless otherwise specified

Mar. 15, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 15, 2013

Mar. 15, 2013

Mar. 15, 2013

Mar. 31, 2014

Mar. 15, 2013

Mar. 31, 2014

Mar. 15, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 28, 2013

Mar. 31, 2014

Mar. 28, 2013

Term Loan A [Member]

Term Loan B [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Amended Senior Credit Facility [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Securitization Facility [Member]

Securitization Facility [Member]

Securitization Facility [Member]

Amended Securitization Facility [Member]

Amended Securitization Facility [Member]

Revolving Credit Facility [Member]

Letters of Credit [Member]

Term Loan A [Member]

Term Loan A [Member]

Term Loan B [Member]

Term Loan B [Member]

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility, maximum borrowing capacity

'

'

'

$1,300

$250

$150

'

$550

'

$475

'

'

'

'

$100

'

$75

Material pledge percentage

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Bank, legal and other fees

8.3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fees capitalized and amortized into interest expense

7.2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Unamortized debt financing costs written off

18.9

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis spread on LIBOR

3.00%

'

'

2.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity date

'

1-Nov-15

1-Mar-18

'

'

'

1-Mar-18

'

1-Mar-20

'

'

'

'

'

'

1-Mar-16

'

Amount outstanding

'

'

'

'

'

'

'

'

'

'

$20

$0

$17.80

$0

'

'

'

Pensions_And_Other_Benefit_Pro2

Pensions And Other Benefit Programs (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
U.S. Defined-Benefit Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost of benefits earned during the period	$3.60	$4.20
Interest cost on projected benefit obligation	21.4	19.9
Expected return on plan assets	-34.8	-34.1
Amortization of prior service cost	0.5	0.5
Amortization of net actuarial loss (gain)	10.6	10.2
Net periodic benefit cost	1.3	0.7
U.S. Retiree Health And Life Insurance Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost of benefits earned during the period	0.2	0.3
Interest cost on projected benefit obligation	2.7	2.4
Amortization of prior service cost	-0.1	-0.2
Amortization of net actuarial loss (gain)	-1	-0.9
Net periodic benefit cost	1.8	1.6
Non-U.S. Defined-Benefit Pension Plans [Member]	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'
Service cost of benefits earned during the period	0.8	0.7
Interest cost on projected benefit obligation	3.5	3.3
Expected return on plan assets	-2.9	-2.4
Amortization of net actuarial loss (gain)	0.5	0.7
Net periodic benefit cost	$1.90	$2.30

Financial_Instruments_Estimate

Financial Instruments (Estimated Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Financial Instruments [Abstract]	'	'
Total long-term debt, including current portion, Carrying amount	($1,065.30)	($1,066.50)
Total long-term debt, including current portion, Estimated Fair Value	-1,066.50	-1,065.20
Foreign currency contract obligations, Carrying amount	6.4	5.2
Foreign currency contract obligations, Estimated Fair Value	6.4	5.2
Natural gas contracts, Carrying amount	0.6	0.5
Natural gas contracts, Estimated Fair Value	0.6	0.5
Interest rate swap contracts, Carrying amount	-7.9	-7.9
Interest rate swap contracts, Estimated Fair Value	($7.90)	($7.90)

Financial_Instruments_Summary_

Financial Instruments (Summary Of Assets And Liabilities) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, including current portion	($1,066.50)	($1,065.20)
Foreign currency contract obligations	6.4	5.2
Natural gas contracts	0.6	0.5
Interest rate swap contracts	-7.9	-7.9
Quoted, Active Markets Level 1 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, including current portion	-470.8	-470.9
Foreign currency contract obligations	6.4	5.2
Other Observable Inputs Level 2 [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, including current portion	-595.7	-594.3
Natural gas contracts	0.6	0.5
Interest rate swap contracts	($7.90)	($7.90)

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Details) (USD $)	3 Months Ended				3 Months Ended				3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
			Natural Gas Commodity Contracts [Member]	Natural Gas Commodity Contracts [Member]	Foreign Exchange Contracts [Member]	Foreign Exchange Contracts [Member]	Foreign Exchange Contracts [Member]	Foreign Exchange Contracts [Member]	Not Designated As Hedging Instrument [Member]	Not Designated As Hedging Instrument [Member]
					Sales And Purchases [Member]	Sales And Purchases [Member]	Intercompany Loans And Dividends [Member]	Intercompany Loans And Dividends [Member]
Derivative [Line Items]	'	'	'	'	'	'	'	'	'	'
Maximum length of time hedged in cash flow hedge	'	'	'24 months	'	'15 months	'	'	'	'	'
Notional amount	'	'	$16.40	$20.10	$143.50	$130.90	$60.30	$36.70	'	'
LIBOR floor	1.00%	'	'	'	'	'	'	'	'	'
Gain (loss) recognized in income for derivative instruments	'	'	'	'	'	'	'	'	2.7	0
Gains or losses excluded from assessment of hedge effectiveness	$0	$0	'	'	'	'	'	'	'	'

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Summary Of Interest Rate Swaps) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
2.303% Interest Rate Swap [Member]	'
Derivative [Line Items]	'
Trade Date	31-Mar-11
Notional amount	$100
Fixed interest rate	2.30%
Coverage Period	'March 2011 to November 2015
Risk Coverage	'Term Loan A
2.523% Interest Rate Swap [Member]	'
Derivative [Line Items]	'
Trade Date	31-Mar-11
Notional amount	200
Fixed interest rate	2.52%
Coverage Period	'March 2011 to November 2015
Risk Coverage	'Term Loan B
1.928% Interest Rate Swap [Member]	'
Derivative [Line Items]	'
Trade Date	27-Mar-12
Notional amount	250
Fixed interest rate	1.93%
Coverage Period	'March 2012 to March 2018
Risk Coverage	'Term Loan B
2.810% Interest Rate Swap [Member]	'
Derivative [Line Items]	'
Trade Date	27-Mar-12
Notional amount	200
Fixed interest rate	2.81%
Coverage Period	'November 2015 to March 2018
Risk Coverage	'Term Loan B
1.398% Interest Rate Swap [Member]	'
Derivative [Line Items]	'
Trade Date	16-Apr-13
Notional amount	$250
Fixed interest rate	1.40%
Coverage Period	'November 2015 to March 2018
Risk Coverage	'Term Loan A

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Summary Of The Fair Value Of Derivative Instruments On The Consolidated Balance Sheet) (Details) (Designated As Hedging Instrument [Member], USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives, Fair Value	$10	$11.10
Derivative Liabilities, Fair Value	11.4	12.7
Other Current Assets [Member] | Natural Gas Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives, Fair Value	0.7	0.7
Other Current Assets [Member] | Foreign Exchange Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives, Fair Value	6	5.2
Other Non-Current Assets [Member] | Foreign Exchange Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives, Fair Value	'	0.6
Other Non-Current Assets [Member] | Interest Rate Swap Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Asset Derivatives, Fair Value	3.3	4.6
Accounts Payable And Accrued Expenses [Member] | Natural Gas Commodity Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liabilities, Fair Value	0.1	0.2
Accounts Payable And Accrued Expenses [Member] | Foreign Exchange Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liabilities, Fair Value	0.1	'
Other Long-Term Liabilities [Member] | Interest Rate Swap Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Derivative Liabilities, Fair Value	$11.20	$12.50

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Summary Of The Amount Of (Loss) Recognized In Accumulated Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Derivative Instruments, Gain (Loss) [Line Items]	'		'
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	$3	[1]	$4.50	[1]
(Loss) Reclassified from AOCI into Income (Effective Portion)	2.7		-1.8
(Loss) in Accumulated OCI expected to be recognized in earnings	-6.2		'
Natural Gas Commodity Contracts [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	0.8	[1]	0.8	[1]
Foreign Exchange Contracts - Purchases [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	2.9	[1]	1.2	[1]
Foreign Exchange Contracts - Sales [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	-0.7	[1]	'
(Loss) Reclassified from AOCI into Income (Effective Portion)	1.5		'
Interest Rate Swap Contracts [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income ("AOCI") (Effective Portion)	'		2.5	[1]
Cost Of Goods Sold [Member] | Natural Gas Commodity Contracts [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
(Loss) Reclassified from AOCI into Income (Effective Portion)	0.7		-1.7
Cost Of Goods Sold [Member] | Foreign Exchange Contracts - Purchases [Member]	'		'
Derivative Instruments, Gain (Loss) [Line Items]	'		'
(Loss) Reclassified from AOCI into Income (Effective Portion)	$0.50		($0.10)
[1]	As of March 31, 2014 the amount of existing gains in AOCI expected to be recognized in earnings over the next twelve months is $6.2 million.

Product_Warranties_Details

Product Warranties (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Product Warranties [Abstract]	'	'
Balance at beginning of period	$9.90	$11.50
Reductions for payments	-2.9	-4.4
Current year warranty accruals	2.5	3.7
Preexisting warranty accrual changes	'	-0.3
Balance at end of period	$9.50	$10.50

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	($371.60)	[1]	($471.40)	[1]
Other comprehensive income before reclassifications, net of tax (expense)	1.1	[1]	-0.9	[1]
Amounts reclassified from accumulated other comprehensive income (loss)	5	[1]	7.9	[1]
Net current period other comprehensive (loss) income	6.1	[1]	7	[1]
Ending Balance	-365.5	[1]	-464.4	[1]
Other comprehensive income before reclassifications, tax (expense) benefit	-1.9		-1.2
Foreign Currency Translation Adjustments [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	21.3	[1]	30.1	[1]
Other comprehensive income before reclassifications, net of tax (expense)	-0.4	[1]	-6.2	[1]
Net current period other comprehensive (loss) income	-0.4	[1]	-6.2	[1]
Ending Balance	20.9	[1]	23.9	[1]
Derivative Adjustments [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	-0.7	[1]	-19.2	[1]
Other comprehensive income before reclassifications, net of tax (expense)	1.2	[1]	3.1	[1]
Amounts reclassified from accumulated other comprehensive income (loss)	-1.8	[1]	1.2	[1]
Net current period other comprehensive (loss) income	-0.6	[1]	4.3	[1]
Ending Balance	-1.3	[1]	-14.9	[1]
Other comprehensive income before reclassifications, tax (expense) benefit	-1.8		-1.4
Pension And Postretirement Adjustments [Member]	'		'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'		'
Beginning Balance	-392.2	[1]	-482.3	[1]
Other comprehensive income before reclassifications, net of tax (expense)	0.3	[1]	2.2	[1]
Amounts reclassified from accumulated other comprehensive income (loss)	6.8	[1]	6.7	[1]
Net current period other comprehensive (loss) income	7.1	[1]	8.9	[1]
Ending Balance	-385.1	[1]	-473.4	[1]
Other comprehensive income before reclassifications, tax (expense) benefit	($0.10)		$0.20
[1]	Amounts are net of tax

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Cost of Goods and Services Sold	$479.40		$477.80
Earnings from continuing operations before income taxes	-36.2		-15.1
Income tax expense	-19.3		-11.9
Earnings from continuing operations	-16.9		-3.2
Total reclassifications for the period	5	[1]	7.9	[1]
Derivative Adjustments [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Total reclassifications for the period	-1.8	[1]	1.2	[1]
Pension And Postretirement Adjustments [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Total reclassifications for the period	6.8	[1]	6.7	[1]
Reclassification From Accumulated Other Comprehensive Income [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Total reclassifications for the period	5		7.9
Reclassification From Accumulated Other Comprehensive Income [Member] | Derivative Adjustments [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Earnings from continuing operations before income taxes	-2.7		1.8
Income tax expense	0.9		-0.6
Earnings from continuing operations	-1.8		1.2
Reclassification From Accumulated Other Comprehensive Income [Member] | Derivative Adjustments [Member] | Natural Gas Commodity Contracts [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Cost of Goods and Services Sold	-0.7		1.7
Reclassification From Accumulated Other Comprehensive Income [Member] | Derivative Adjustments [Member] | Foreign Exchange Contracts - Purchases [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Cost of Goods and Services Sold	-0.5		0.1
Reclassification From Accumulated Other Comprehensive Income [Member] | Derivative Adjustments [Member] | Foreign Exchange Contracts - Sales [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Cost of Goods and Services Sold	-1.5		'
Reclassification From Accumulated Other Comprehensive Income [Member] | Pension And Postretirement Adjustments [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Earnings from continuing operations before income taxes	10.5		10.3
Income tax expense	-3.7		-3.6
Earnings from continuing operations	6.8		6.7
Reclassification From Accumulated Other Comprehensive Income [Member] | Pension And Postretirement Adjustments [Member] | Cost Of Goods Sold [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Prior service cost amortization	0.2		0.2
Amortization of net actuarial loss	5.4		5.3
Reclassification From Accumulated Other Comprehensive Income [Member] | Pension And Postretirement Adjustments [Member] | SG&A Expense [Member]	'		'
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]	'		'
Prior service cost amortization	0.2		0.1
Amortization of net actuarial loss	$4.70		$4.70
[1]	Amounts are net of tax

Litigation_And_Related_Matters1

Litigation And Related Matters (Details) (USD $)	3 Months Ended	12 Months Ended						3 Months Ended
	Mar. 31, 2014	Dec. 31, 2007	Jan. 16, 2014	Dec. 31, 2013	Nov. 25, 2013	Sep. 30, 2013	Dec. 08, 2011	Mar. 31, 2014	Mar. 31, 2014	Oct. 31, 2010
	site							Withdrawal from Multiemployer Defined Benefit Plan [Member]	Maximum [Member]	Maximum [Member]
Loss Contingencies [Line Items]	'	'	'	'	'	'	'	'	'	'
Number of landfills listed as superfund site	2	'	'	'	'	'	'	'	'	'
Percentage of site costs Nave agreed to pay	'	33.33%	'	'	'	'	'	'	'	'
Potential environmental liabilities	$7,900,000	'	'	$8,300,000	'	'	'	'	'	'
Recorded amount for probable recoveries	0	'	'	0	'	'	'	'	'	'
Claimed amount	'	'	'	'	'	'	'	15,200,000	'	'
Period of dispersal	'	'	'	'	'	'	'	'20 years	'	'
Multi-employer pension plan withdrawal liability	$7,000,000	'	'	'	'	$7,500,000	'	'	$10,000,000	'
Antidumping Duties	'	'	'	'	8.87%	'	3.31%	'	'	269.00%
Countervailing Duties	'	'	0.90%	'	'	'	1.50%	'	'	'

Special_Cash_Dividend_Details

Special Cash Dividend (Details) (USD $)	3 Months Ended		0 Months Ended		24 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Apr. 03, 2012	Mar. 23, 2012	Mar. 31, 2014
			2012 Special Cash Dividend [Member]	2012 Special Cash Dividend [Member]	2012 Special Cash Dividend [Member]
Special Cash Dividend And Stock Option Adjustments [Line Items]	'	'	'	'	'
Dividend declared, per share	'	'	'	$8.55	'
Dividend declared	'	'	'	$508	'
Dividends paid	$1.20	$0.70	$502.90	'	$3.70

Earnings_Per_Share_Narrative_D

Earnings Per Share (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Options to purchase common stock not included in the computation of diluted EPS	0	0

Earnings_Per_Share_Reconciliat

Earnings Per Share (Reconciliation Of Net Earnings To Net Earnings Attributable To Common Shares Used In Basic And Diluted Calculation) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Earnings from continuing operations	$16.90	$3.20
Earnings allocated to participating non-vested share awards	-0.1	'
Earnings from continuing operations attributable to common shares	$16.80	$3.20

Earnings_Per_Share_Reconciliat1

Earnings Per Share (Reconciliation Of Basic Shares Outstanding To Diluted Shares Outstanding) (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Basic shares outstanding	54.8	59.2
Dilutive effect of stock option awards	0.5	0.6
Diluted shares outstanding	55.3	59.8