Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net earnings	$ 104.7	$ 94.2	$ 63.8
Adjustments to reconcile earnings to net cash provided by operating activities:
Depreciation and amortization	89.2	118.3	129.4
Write off of debt financing costs	1.1
Gain (loss) on disposal of discontinued operations	(0.1)	0.2	17.0
Impairment on assets of discontinued operations			11.9
Fixed and intangible asset impairments			15.8
Deferred income taxes	51.0	(48.5)	41.5
Share-based compensation	12.4	13.4	12.7
Excess tax benefits from share-based awards			(8.4)
Equity earnings from joint venture	(73.1)	(66.1)	(65.1)
Separation costs	34.5	34.3
Loss on interest rate swap	10.7
U.S. pension expense	15.0	25.2	0.6
Non-cash foreign currency translation on intercompany loans	(3.6)	19.8	37.2
Other, non-cash adjustments, net	(0.3)	0.3	(0.5)
Changes in operating assets and liabilities:
Receivables	(23.9)	2.7	(6.2)
Inventories	(7.0)	(15.7)	(26.8)
Other current assets	7.1	(7.3)	(9.7)
Other noncurrent assets	(9.9)	7.9	(5.1)
Accounts payable and accrued expenses	(82.1)	15.0	(6.1)
Income taxes payable	(49.3)	33.6	24.2
Other long-term liabilities	(22.0)	(22.2)	(21.0)
Other, net	(5.1)	(1.4)	3.6
Net cash provided by operating activities	49.3	203.7	208.8
Cash flows from investing activities:
Purchases of property, plant and equipment	(104.2)	(170.7)	(222.9)
Return of investment from joint venture	86.9	64.2	67.9
Proceeds from (payment of) company-owned life insurance, net		2.2	(0.5)
Proceeds from the sale of assets	0.1	2.8	7.9
Proceeds from settlement of note receivable	0.2		2.4
Net cash effect from deconsolidation of subsidiary			(4.1)
Net cash (used for) investing activities	(17.0)	(101.5)	(149.3)
Cash flows from financing activities:
Proceeds from revolving credit facility and other short-term debt	90.0		122.8
Payments of revolving credit facility and other short-term debt	(90.0)		(122.8)
Proceeds from long-term debt	363.5
Payments of long-term debt	(434.1)	(39.5)	(23.9)
Financing costs	(8.1)
Special dividends paid		(1.2)	(1.3)
Excess tax benefits from share-based compensation			8.4
Proceeds from exercised stock options	0.7	6.4	17.8
Cash transferred to Armstrong Flooring, Inc.	(9.1)
Proceeds from company-owned life insurance loans, net	2.0	2.0	2.3
Payment for treasury stock acquired	(43.8)
Net cash (used for) provided by financing activities	(128.9)	(32.3)	3.3
Effect of exchange rate changes on cash and cash equivalents	(6.3)	(10.4)	(12.7)
Net (decrease) increase in cash and cash equivalents	(102.9)	59.5	50.1
Cash and cash equivalents at beginning of year	244.8	185.3	135.2
Cash and cash equivalents at end of year	141.9	244.8	185.3
Cash and cash equivalents at end of year of discontinued operations		35.5	45.3
Cash and cash equivalents at end of year of continuing operations	141.9	209.3	140.0
Supplemental Cash Flow Disclosures:
Interest paid	33.4	39.4	40.2
Income taxes paid, net	33.7	44.4	15.0
Amounts in accounts payable for capital expenditures	$ 4.4	$ 14.3	$ 18.7