Discontinued Operations (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended			0 Months Ended	9 Months Ended			1 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Mar. 22, 2013 Service Experts [Member]	Sep. 30, 2013 Service Experts [Member]	Sep. 30, 2013 Service Experts [Member] Goodwill in assets of discontinued operations [Member]	Dec. 31, 2012 Service Experts [Member] Goodwill in assets of discontinued operations [Member]	Apr. 30, 2012 Hearth [Member]
Discontinued Operations (Textual) [Abstract]
Goodwill	$ 218.8				$ 218.8		$ 223.8				$ 66.0
Goodwill impairment										0
Net proceeds from sale of discontinued operations								10.4				10.1
Working capital adjustment included in net proceeds from sale of discontinued operations								3.8
Sale of equipment					0.1	0.1
Severance expense									2.3
Stock-based compensation expense	$ 5.3	[1]	$ 2.7	[1]	$ 20.5	$ 10.5			$ 0.2

[1] Stock-Based Compensation expense is recorded in our Corporate and other business segment.