Reportable Business Segments (Details 1) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Total assets by business segment
Total assets	$ 1,834.3		$ 1,692.0
Residential Heating & Cooling [Member]
Total assets by business segment
Total assets	568.8		519.8
Commercial Heating & Cooling [Member]
Total assets by business segment
Total assets	295.9		252.7
Service Experts [Member]
Total assets by business segment
Total assets	185.6		186.2
Refrigeration [Member]
Total assets by business segment
Total assets	565.5		389.7
Corporate and Other [Member]
Total assets by business segment
Total assets	227.2		354.9
Eliminations [Member]
Total assets by business segment
Total assets	$ (8.7)	[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.