Discontinued Operations (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012	Dec. 31, 2012
Hearth [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	$ 0		$ 0	$ 0		$ 23.5
Liabilities of discontinued operations:
Pre Tax Operating Loss before Loss on Sale	0		(1.2)	0.5		(13.1)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	0		2.9	0		(0.9)
Service Experts [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Including Discontinued Operation, Revenue	0		98.3	73.5		292.6
Assets of discontinued operations:
Accounts receivable, net	0			0			11.2
Inventories, net	0			0			4.8
Property, Plant and Equipment, net	0			0			3.6
Goodwill and intangible assets, net	0	[1]		0	[1]		66.2	[1]
Deferred income taxes	0			0			5.5
Other assets	0			0			7.3
Liabilities of discontinued operations:
Accounts payable	0			0			16.7
Accrued expenses	0			0			38.5
Pre Tax Operating Loss before Loss on Sale	(2.3)		(26.8)	(17.8)		(42.7)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax	$ 0		$ 0	$ 1.7		$ 0

[1] Includes goodwill of $66.0 million as of December 31, 2012. No goodwill impairments were recorded in 2013, and all goodwill was eliminated on March 22, 2013 as a result of the sale of the business.