INCOME TAXES (Schedule of Differences between Income Tax Expense) (Details) - USD ($) $ in Millions		12 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Amount
Federal income tax	[1]	$ 48.4	$ 22.8	$ 40.3
State income tax	[2]	2.9	1.6	2.0
Foreign income tax	[3]	(14.0)	(10.2)	(7.7)
Application of federal tax credits		(6.1)	(2.2)	(0.6)
Adjustment of estimated income tax accruals		0.3	(1.6)	(0.6)
Valuation of tax attributes		(14.4)	4.0	21.3
Domestic manufacturer's deduction		(1.8)	(1.5)	(1.8)
Capitalized transaction costs			2.5	0.3
Other, net		0.2	2.9	1.4
Income tax expense		$ 15.5	$ 18.3	$ 54.6
% of Pretax Income
Federal income tax	[1]	35.00%	35.00%	35.00%
State income tax	[2]	2.10%	2.40%	1.70%
Foreign income tax	[3]	(10.10%)	(15.70%)	(6.70%)
Application of federal tax credits		(4.40%)	(3.40%)	(0.50%)
Adjustment of estimated income tax accruals		0.20%	(2.40%)	(0.50%)
Valuation of tax attributes		(10.40%)	6.20%	18.50%
Domestic manufacturer's deduction		(1.30%)	(2.30%)	(1.50%)
Capitalized transaction costs			3.80%	0.20%
Other, net		0.10%	4.50%	1.20%
Income tax expense		11.20%	28.10%	47.40%

[1] At statutory rate.

[2] Net of Federal benefit.

[3] Federal tax rate differential.