Disposition Of Business (Details) - Disposal Group, Not Discontinued Operations [Member] - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Medical Products Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from disposition of business, net	$ 10.1
Cash proceeds held in escrow	0.8
Pre-tax gain	$ 4.1
Radon Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash proceeds from disposition of business, net		$ 7.0
Transaction expenses		0.7
Pre-tax gain		1.0
Foreign currency translation losses		1.4
Net loss on disposition of business		$ 0.4