Reportable Business Segments (Details)	3 Months Ended
	Mar. 31, 2012
Residential Heating & Cooling [Member] | United States [Member]
Summary of nature of operations of reportable segment
Product or Services	Heating
Markets Served	Residential Replacement
Residential Heating & Cooling [Member] | Canada [Member]
Summary of nature of operations of reportable segment
Product or Services	Air Conditioning
Markets Served	Residential New Construction
Commercial Heating & Cooling [Member] | United States [Member]
Summary of nature of operations of reportable segment
Product or Services	Rooftop Products
Markets Served	Light Commercial
Commercial Heating & Cooling [Member] | Canada [Member]
Summary of nature of operations of reportable segment
Product or Services	Chillers
Commercial Heating & Cooling [Member] | Europe [Member]
Summary of nature of operations of reportable segment
Product or Services	Air Handlers
Service Experts [Member]
Summary of nature of operations of reportable segment
Product or Services	Repair
Service Experts [Member] | United States [Member]
Summary of nature of operations of reportable segment
Product or Services	Equipment Sales
Markets Served	Residential
Service Experts [Member] | Canada [Member]
Summary of nature of operations of reportable segment
Product or Services	Installation
Markets Served	Light Commercial
Service Experts [Member] | Other Countries [Member]
Summary of nature of operations of reportable segment
Product or Services	Maintenance
Refrigeration [Member] | United States [Member]
Summary of nature of operations of reportable segment
Product or Services	Unit Coolers
Markets Served	Light Commercial
Refrigeration [Member] | Canada [Member]
Summary of nature of operations of reportable segment
Product or Services	Condensing Units
Markets Served	Food Preservation and
Refrigeration [Member] | Europe [Member]
Summary of nature of operations of reportable segment
Product or Services	Other Commercial
Markets Served	Non-Food/Industrial
Refrigeration [Member] | Asia Pacific [Member]
Summary of nature of operations of reportable segment
Product or Services	Refrigeration Products
Refrigeration [Member] | South America [Member]
Summary of nature of operations of reportable segment
Product or Services	Display Cases and Systems
Refrigeration [Member] | Mexico [Member]
Summary of nature of operations of reportable segment
Product or Services
Markets Served