EMPLOYEE BENEFIT PLANS (Detail) - Weighted-average assumptions used in determining the net periodic benefit costs	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Pension Plans, Defined Benefit [Member]
Discount rate	4.44%	4.89%	5.60%
Average wage increase	0.11%	0.72%	3.50%
Expected return on assets	7.71%	7.72%	7.00%
Supplemental Benefits [Member]
Discount rate	4.30%	4.26%	5.00%
Average wage increase	4.89%	4.89%	5.00%
Expected return on assets	0.00%	0.00%	0.00%