FAIR VALUE MEASUREMENTS (Details) - Financial Assets (Liabilities) Carried at Fair Value (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013
Money market funds	$ 144.8	$ 168.0
Investment securities	99.5	28.8
Derivative assets	57.0	67.0
Derivative liabilities	(61.4)	(72.2)
Acquisition contingent consideration payable	(110.9)	(106.4)
Fair Value, Inputs, Level 1 [Member]
Money market funds	144.8	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	99.5	28.8
Derivative assets	57.0	67.0
Derivative liabilities	(61.4)	(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	$ (110.9)	$ (106.4)