Impairment Charges (Summary of Impairment Charges On Continued and Discontinued Operations) (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Goodwill [Line Items]
Good-will	$ 3.7	$ 0.0	$ 4.1	$ 3.7	$ 4.1
Other Long-Lived Assets	0.0	0.6		0.0	2.4
Total	3.7	0.6		3.7	6.5
CVP unit
Goodwill [Line Items]
Good-will	3.7
Continuing operations:
Goodwill [Line Items]
Good-will	3.7	0.0		3.7	4.1
Other Long-Lived Assets	0.0	0.6		0.0	2.2
Total	3.7	0.6		3.7	6.3
Continuing operations: | Residential Furnishings
Goodwill [Line Items]
Good-will	0.0	0.0		0.0	0.0
Other Long-Lived Assets	0.0	0.0		0.0	0.2
Total	0.0	0.0		0.0	0.2
Continuing operations: | Industrial Materials
Goodwill [Line Items]
Good-will	0.0	0.0		0.0	4.1
Other Long-Lived Assets	0.0	0.0		0.0	1.4
Total	0.0	0.0		0.0	5.5
Continuing operations: | CVP unit
Goodwill [Line Items]
Good-will	3.7	0.0		3.7	0.0
Other Long-Lived Assets	0.0	0.1		0.0	0.1
Total	3.7	0.1		3.7	0.1
Continuing operations: | Other units
Goodwill [Line Items]
Good-will	0.0	0.0		0.0	0.0
Other Long-Lived Assets	0.0	0.5		0.0	0.5
Total	0.0	0.5		0.0	0.5
Discontinued operations:
Goodwill [Line Items]
Good-will	0.0	0.0		0.0	0.0
Other Long-Lived Assets	0.0	0.0		0.0	0.2
Total	0.0	0.0		0.0	0.2
Discontinued operations: | Subsequent activity related to previous divestitures
Goodwill [Line Items]
Good-will	0.0	0.0		0.0	0.0
Other Long-Lived Assets	0.0	0.0		0.0	0.2
Total	$ 0.0	$ 0.0		$ 0.0	$ 0.2