Discontinued business operation accumulated other comprehensive income loss tax.

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Disposal group including discontinued operation impairment charges before tax.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Acquisition and Discontinued Operations (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended			3 Months Ended		6 Months Ended
	May 31, 2018	Apr. 30, 2017	Jan. 31, 2017	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2018
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Business acquisition, goodwill				$ 16.9	$ 11.3	$ 16.9
EMEA and Pacific Rim Business [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Asset impairment charges				5.7	74.0	23.4
EMEA and Pacific Rim Business [Member] \| Foreign Currency Translation Adjustments [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Accumulated other comprehensive income adjustments				$ 19.1	$ 51.4	$ 13.9
DLW [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Settlement agreement and mutual release with administrator to settle all claims of Administrator related to insolvency for a cash payment		$ 11.8
Plasterform, Inc. [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Business acquisition, purchase price	$ 11.6
Business acquisition, total fair value of tangible assets acquired, less liabilities assumed	2.0
Business acquisition, total fair value of intangible assets of amortizable customer relationships and non-amortizing brand names	4.0
Business acquisition, goodwill	$ 5.6
Tectum [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Business acquisition, purchase price			$ 31.2
Business acquisition, total fair value of tangible assets acquired, less liabilities assumed			4.4
Business acquisition, total fair value of intangible assets of amortizable customer relationships and non-amortizing brand names			16.0
Business acquisition, goodwill			$ 10.8