FAIR VALUE MEASUREMENTS (Details) - Financial Assets (Liabilities) Carried at Fair Value (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Sep. 30, 2013
Money market funds	$ 72.1	$ 168.0
Investment securities	15.0	28.8
Derivative assets	65.3	74.6
Derivative liabilities	(62.6)	(72.2)
Acquisition contingent consideration payable	(53.0)	(106.4)
Fair Value, Inputs, Level 1 [Member]
Money market funds	72.1	168.0
Investment securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Acquisition contingent consideration payable	0	0
Fair Value, Inputs, Level 2 [Member]
Money market funds	0	0
Investment securities	15.0	28.8
Derivative assets	65.3	74.6
Derivative liabilities	(62.6)	(72.2)
Acquisition contingent consideration payable	0	0
Fair Value, Inputs, Level 3 [Member]
Money market funds	0	0
Investment securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Acquisition contingent consideration payable	$ (53.0)	$ (106.4)