OTHER COMPREHENSIVE INCOME (Schedule of Changes in AOCL by Component) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Other comprehensive income (loss)
Tax effect	$ 5.1	$ 4.9	$ (18.1)
Total Other Comprehensive Income (Loss), Net of Tax	(66.7)	(38.4)	42.3
Accumulated other comprehensive loss
Beginning balance	806.5
Net activity	(66.7)	(38.4)	42.3
Ending balance	1,146.9	806.5
Available-for-Sale Securities and Currency Hedges [Member]
Other comprehensive income (loss)
Prior to reclassification	(0.6)	0.3
Reclassification from	$ 0.6	0.1
Pre-tax		0.4
Tax effect		(0.1)
Total Other Comprehensive Income (Loss), Net of Tax		0.3
Accumulated other comprehensive loss
Beginning balance		(0.3)
Net activity		$ 0.3
Ending balance			(0.3)
Foreign Currency Translation Adjustment [Member]
Other comprehensive income (loss)
Prior to reclassification	$ (58.6)	$ (29.6)
Reclassification from
Pre-tax	$ (58.6)	$ (29.6)
Tax effect
Total Other Comprehensive Income (Loss), Net of Tax	$ (58.6)	$ (29.6)
Accumulated other comprehensive loss
Beginning balance	(34.2)	(4.6)
Net activity	(58.6)	(29.6)
Ending balance	(92.8)	(34.2)	(4.6)
Pension and Postretirement Defined Benefit Plan Items [Member]
Other comprehensive income (loss)
Prior to reclassification	(28.7)	(16.8)
Reclassification from	15.5	2.7
Pre-tax	(13.2)	(14.1)
Tax effect	5.1	5.0
Total Other Comprehensive Income (Loss), Net of Tax	(8.1)	(9.1)
Accumulated other comprehensive loss
Beginning balance	(39.9)	(30.8)
Net activity	(8.1)	(9.1)
Ending balance	(48.0)	(39.9)	(30.8)
Accumulated Other Comprehensive Income (Loss) [Member]
Other comprehensive income (loss)
Prior to reclassification	(87.9)	(46.1)
Reclassification from	16.1	2.8
Pre-tax	(71.8)	(43.3)
Tax effect	5.1	4.9
Total Other Comprehensive Income (Loss), Net of Tax	(66.7)	(38.4)
Accumulated other comprehensive loss
Beginning balance	(74.1)	(35.7)
Net activity	(66.7)	(38.4)
Ending balance	$ (140.8)	$ (74.1)	$ (35.7)