Acquisitions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				1 Months Ended	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2012 Telair and Nordisk Y	May 31, 2012 Telair and Nordisk	Dec. 02, 2011 Telair and Nordisk	Oct. 31, 2011 Airinmar	May 31, 2012 Airinmar	Aug. 31, 2012 Airinmar Y	Feb. 29, 2012 Airinmar	Oct. 11, 2011 Airinmar
Acquisitions
Purchase price of the acquisition			$ 296.5	$ 280.0					$ 43.5
Cash consideration paid	16.5	16.5			23.2
Potential earn-out payment									20.3
Period over which EBITDA levels will be measured (in years)							2
Estimated liability of the acquisition date fair value of the earn-out								20.3
Reduction in estimated liability of the acquisition date fair value of the earn-out						3.4
Maximum time period for determining fair values for assets acquired and liabilities assumed (in years)		1
Purchase price allocation
Cash		1.5					3.7
Accounts receivable		47.1					8.0
Inventories		54.5
Prepaid expenses		4.1					0.9
Property, plant and equipment		17.0					0.6
Deferred tax assets		34.3					5.3
Goodwill and identified intangibles		223.9					42.4
Notes payable		(1.6)
Accounts payable		(14.7)					(6.7)
Deferred tax liabilities		(34.3)					(5.3)
Accrued liabilities		(27.5)					(5.4)
Other long-term liabilities		$ (7.8)