Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Service Experts [Member]
Summary of net trade sales and pre-tax operating losses
Net trade sales	$ 0	$ 0
Pre-tax operating income (loss)	(0.1)	0
Gain (loss) on sale of business	0	(0.1)
Hearth [Member]
Summary of net trade sales and pre-tax operating losses
Net trade sales	0	0
Pre-tax operating income (loss)	(0.1)	0
Gain (loss) on sale of business	$ 0	$ 0.1