Goodwill And Other Intangible Assets (Changes In The Carrying Amounts Of Goodwill) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Goodwill [Roll Forward]
Net goodwill	$ 829.4	$ 829.4		$ 926.8	[1]
Additions for current year acquisitions		7.9		29.4
Adjustments to prior year acquisitions		1.1		0.0
Reductions for sale of business		(0.4)
Impairment charge	(4.1)	(4.1)	[2]	(108.0)	[3]	$ (63.0)
Foreign currency translation adjustment/other		(27.8)		(18.8)
Gross goodwill		1,123.8
Accumulated impairment losses		(317.7)
Net goodwill		806.1		829.4		926.8	[1]
Residential Furnishings
Goodwill [Roll Forward]
Net goodwill	396.9	396.9		373.4	[1]
Additions for current year acquisitions		0.0		29.4
Adjustments to prior year acquisitions		1.1		0.1
Reductions for sale of business		0.0
Impairment charge		0.0	[2]	0.0	[3]
Foreign currency translation adjustment/other		(11.7)		(6.0)
Gross goodwill		386.3
Accumulated impairment losses		0.0
Net goodwill		386.3		396.9		373.4	[1]
Commercial Fixturing & Components
Goodwill [Roll Forward]
Net goodwill	115.8	115.8		225.4	[1]
Additions for current year acquisitions		7.9		0.0
Adjustments to prior year acquisitions		0.0		0.0
Reductions for sale of business		0.0
Impairment charge		0.0	[2]	108.0	[3]
Foreign currency translation adjustment/other		(2.6)		(1.6)
Gross goodwill		371.7
Accumulated impairment losses		(250.6)
Net goodwill		121.1		115.8		225.4	[1]
Industrial Materials - Steel Tubing
Goodwill [Roll Forward]
Net goodwill	81.0	81.0		81.2	[1]
Additions for current year acquisitions		0.0		0.0
Adjustments to prior year acquisitions		0.0		0.0
Reductions for sale of business		0.0
Impairment charge		(4.1)	[2]	0.0	[3]
Foreign currency translation adjustment/other		(0.2)		(0.2)
Gross goodwill		80.8
Accumulated impairment losses		(4.1)
Net goodwill		76.7		81.0		81.2	[1]
Specialized Products:
Goodwill [Roll Forward]
Net goodwill	$ 235.7	235.7		246.8	[1]
Additions for current year acquisitions		0.0		0.0
Adjustments to prior year acquisitions		0.0		(0.1)
Reductions for sale of business		(0.4)
Impairment charge		0.0	[2]	0.0	[3]
Foreign currency translation adjustment/other		(13.3)		(11.0)
Gross goodwill		285.0
Accumulated impairment losses		(63.0)
Net goodwill		$ 222.0		$ 235.7		$ 246.8	[1]

[1] As discussed in Note F, our internal management organization structure and all related internal reporting changed during 2015. We reassigned goodwill using a relative fair value approach and prior year amounts have been retrospectively adjusted.

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

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