RETIREMENT AND POSTRETIREMENT BENEFIT PLANS (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Defined Contribution Savings Plans
Expense under plans	$ 13.3	$ 13.0	$ 12.6
Defined Benefit Retirement Plans [Member]
Obligations and Funded Status
Net actuarial gains (losses) included in Accumulated Other Comprehensive Income (Loss)	100.0	104.2
Prior service credits (costs) included in Accumulated Other Comprehensive Income (Loss)	2.4	2.9
Pension items in AOCI, aggregate tax effect	38.7	40.7
Estimated net actuarial loss that will be amortized over the next fiscal year	7.8
Estimated prior service cost that will be amortized over the next fiscal year	0.6
Postretirement health care plan (benefit) cost	8.8	6.3	8.4
Accumulated Benefit Obligation
Accumulated benefit obligation	302.4	271.6
Plan Assets
Equity securities of one entity, maximum percentage of portfolio	10.00%
Cash Flows
Employer contributions	1.0	1.0	50.0
Postretirement Health Care Plan
Discount rate for expense	4.60%	5.10%	5.50%
Discount rate for obligation	4.10%	4.60%	5.10%
Postretirement Healthcare Plan [Member]
Obligations and Funded Status
Net actuarial gains (losses) included in Accumulated Other Comprehensive Income (Loss)	1.6	1.7
Prior service credits (costs) included in Accumulated Other Comprehensive Income (Loss)	3.8	4.8
Pension items in AOCI, aggregate tax effect	2.1	2.5
Estimated net actuarial loss that will be amortized over the next fiscal year	(0.1)
Estimated prior service cost that will be amortized over the next fiscal year	(0.9)
Postretirement health care plan (benefit) cost	(0.3)	(0.1)	(1.0)
Cash Flows
Employer contributions	0.6	0.4
Postretirement Health Care Plan
Discount rate for expense	4.00%	4.40%	5.50%
Discount rate for obligation	3.30%	4.00%	4.40%
Effect of one-percentage-point increase/decrease on service and interest costs	0.1
Effect of one-percentage-point increase on service and benefit obligation	0.9
Effect of one-percentage-point decrease on service and benefit obligation	0.8
Expected employer contributions required in 2013	0.5
Defined benefit plan estimated future employer contributions in next fiscal, per year, thereafter	$ 1.0