The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

Goodwill, Intangible and Other Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jun. 30, 2011 Service Experts [Member]	Dec. 31, 2010 Service Experts [Member]	Dec. 31, 2011 Service Experts [Member]	Mar. 31, 2011 Refrigeration [Member]	Dec. 31, 2011 Residential Heating & Cooling [Member]
Goodwill [Line Items]
Accumulated impairment losses							$ 208.0
Acquired additional goodwill					3.0	4.0		42.0
Goodwill impairment	7.6	7.6	0	0					7.6
Goodwill, Intangible and Other Assets (Textual) [Abstract]
Intangible assets consisting trade mark	$ 9.9	$ 9.9	$ 4.9