Contingencies and Significant Estimates (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2011 segment M party D note Y	Dec. 31, 2010	Dec. 31, 2009
Site contingency
Approximate number of parties identified as having shipped hazardous materials to the site	150
Number of parties that negotiated with the United States Environmental Protection Agency and the Wisconsin Department of Natural Resources to fund the cleanup and settle potential liability to the site	11
Estimated remaining cost to complete clean up of the site with respect to joint and several parties	$ 8.1
Percentage of estimated remaining cost of entity's share of liability (as a percent)	11.00%
Remaining estimated liability, included in accounts payable and accrued expenses	0.7
Accruals for environmental matters related to Enodis locations	1.1
Product liability reserves
Period over which product liability self-insurance retention levels have fluctuated (in years)	5
Product liability self-insurance retention levels per occurrence, low end of the range	0.1
Product liability self-insurance retention levels per occurrence, high end of the range	3.0
Product liability self-insurance maximum retention level for new occurrence	2.0
Product liability reserves	28.2	27.8
Product liability reserves for actual cases	5.9
Product liability reserves for claims incurred But not reported	22.3
Warranty claims reserves	$ 97.8	$ 99.9	$ 113.1