Discontinued Operations (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012	Jun. 30, 2013		Jun. 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		$ 4.9	$ 0		$ 23.5
Liabilities of discontinued operations:
Pre Tax Operating Loss before Loss on Sale	0.4		(3.4)	0.5		(11.9)
Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax			(3.8)			(3.8)
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		112.4	73.5		194.3
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	(0.4)		(1.6)	(15.5)		(15.9)
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.