Reportable Business Segments (Details 1) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Total assets by business segment
Total assets	$ 2,019.0		$ 1,692.0
Residential Heating & Cooling [Member]
Total assets by business segment
Total assets	669.7		519.8
Commercial Heating & Cooling [Member]
Total assets by business segment
Total assets	316.1		252.7
Service Experts [Member]
Total assets by business segment
Total assets	197.7		186.2
Refrigeration [Member]
Total assets by business segment
Total assets	590.0		389.7
Corporate and Other [Member]
Total assets by business segment
Total assets	257.4		354.9
Eliminations [Member]
Total assets by business segment
Total assets	$ (11.9)	[1]	$ (11.3)	[1]

[1] (1) Eliminations consist of net intercompany receivables and intercompany profit included in inventory from products sold between business segments, such as products sold to Service Experts by the Residential Heating & Cooling segment.