Impairment Charges (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Mar. 31, 2015	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Goodwill [Line Items]
Impairment charges				$ 6.5		$ 109.3		$ 65.4
Control premium percentage				25.00%
Financial forecasted years				10 years
Goodwill impairment	$ 4.1			$ 4.1	[1]	$ 108.0	[2]	$ 63.0
Fair Value Inputs, Compound Annual Growth Rate, Earnings Before Interest, Taxes, Depreciation, Amortization						0.50%		4.80%
Discount Rate						12.00%		10.50%
Commercial Fixturing And Components Fixture And Display Group [Member] | Store Fixtures [Member]
Goodwill [Line Items]
Goodwill impairment		$ 108.0
Specialized Products:
Goodwill [Line Items]
Goodwill impairment				$ 0.0	[1]	$ 0.0	[2]
Specialized Products: | CVP unit
Goodwill [Line Items]
Goodwill impairment			$ 63.0
Specialized Products: | CVP unit | Customer- Related Intangibles
Goodwill [Line Items]
Accelerated amortization of intangibles			$ 3.8

[1] We recorded a goodwill impairment charge related to the Steel Tubing unit as outlined in Note C.

[2] We recorded a goodwill impairment charge related to the Store Fixtures unit as outlined in Note C.