FAIR VALUE MEASUREMENTS (Details) - Reconciliation of Items Carried at Fair Value Using Significant Unobservable Inputs (Level 3) (Acquisition Contingent Consideration Payable [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Acquisition Contingent Consideration Payable [Member]
Beginning balance	$ (106.4)	$ (116.4)
Gain (loss) included in:
Other income (expense) - other	0	0
Other comprehensive income	0	0
Issuances	0	0
Accretion (interest and fair value adjustment)	(6.6)	(16.2)
Settlements	60.0	45.0
Ending balance	(53.0)	(87.6)
Net change in unrealized gain (loss) included in earnings related to instruments still held	$ 0	$ 0