RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Schedule of Obligations and Funded Status) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Amounts recorded in the Consolidated Balance Sheets:
Accrued pension benefits, long-term	$ (118.8)	$ (76.9)
Master Defined Benefit Retirement Plan [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	343.8	297.9
Service cost	5.4	5.0	$ 6.1
Interest cost	14.6	14.4	13.2
Actuarial loss	12.5	31.4
Benefits paid	$ (54.0)	(10.2)
Acquisitions		4.3
Special termination benefits		$ 2.4
Plan settlement	$ (4.4)
Exchange rate gain	(2.4)	$ (1.4)
Benefit obligation at end of year	315.5	343.8	297.9
Change in plan assets:
Fair value of plan assets at beginning of year	276.1	254.4
Actual return on plan assets	(3.9)	30.9
Employer contributions	0.9	1.0
Benefits paid	(54.0)	(10.2)
Fair value of plan assets at end of year	219.1	276.1	$ 254.4
Funded status and net amounts recognized	(96.4)	(67.7)
Amounts recorded in the Consolidated Balance Sheets:
Accrued pension benefits, current portion	(1.0)	(1.0)
Accrued pension benefits, long-term	(95.4)	(66.7)
Net amount recognized	$ (96.4)	$ (67.7)