Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

Goodwill (Details) (USD $) In Millions	9 Months Ended					3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
Goodwill (Details) (USD $) In Millions	Sep. 30, 2011	Sep. 30, 2011 Residential Heating & Cooling [Member]	Dec. 31, 2010 Residential Heating & Cooling [Member]	Sep. 30, 2011 Commercial Heating & Cooling [Member]	Dec. 31, 2010 Commercial Heating & Cooling [Member]	Jun. 30, 2011 Service Experts [Member]	Sep. 30, 2011 Service Experts [Member]	Mar. 31, 2011 Refrigeration [Member]	Sep. 30, 2011 Refrigeration [Member]
Goodwill
Goodwill, Beginning Balance	$ 271.8	$ 33.7	$ 33.7	$ 30.0	$ 30.0		$ 116.6	$ 91.5	$ 91.5
Goodwill Acquisition Disposition During Period	45.0						3.0		42.0
Other	(9.8)						(6.1)		(3.7)
Goodwill, Ending Balance	307.0	33.7	33.7	30.0	30.0		113.5		129.8
Goodwill (Textual) [Abstract]
Accumulated impairment losses							208.0
Acquired additional goodwill						$ 3.0		$ 42.0