ACQUISITIONS (Acquisition of Virtus) (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Business Acquisition [Line Items]
Purchase price of entity, net of cash acquired		$ 1,638.7	$ 239.5
Fair value of the assets acquired and liabilities assumed:
Goodwill		$ 1,610.5	$ 399.8	$ 342.8
Virtus, Inc. [Member]
Business Acquisition [Line Items]
Purchase price of entity	$ 17.6
Purchase price of entity, net of cash acquired	13.0
Fair value of the assets acquired and liabilities assumed:
Inventory	2.6
Other current assets	5.4
Property, plant, and equipment	1.9
Goodwill	9.4
Current liabilities	(1.6)
Deferred tax liability	(0.1)
Total purchase price	$ 17.6