Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Service Experts [Member]
Summary of net trade sales and pre-tax operating losses
Net trade sales	$ 0	$ 0	$ 0	$ 73.5
Pre-tax operating income (loss)	0	(2.3)	1.1	(17.8)
Gain on sale of business	0	0	0	1.7
Hearth [Member]
Summary of net trade sales and pre-tax operating losses
Net trade sales	0	0	0	0
Pre-tax operating income (loss)	(0.2)	0	(2.4)	0.5
Gain on sale of business	$ 0	$ 0	$ 0	$ 0