EMPLOYEE BENEFIT PLANS (Detail) - Schedule of weighted average assumptions used in determining benefit obligations	Sep. 30, 2012	Sep. 30, 2011
Pension Plans, Defined Benefit [Member]
Weighted average discount rate	3.67%	4.44%
Weighted average wage increase	0.11%	0.11%
Supplemental Benefits [Member]
Weighted average discount rate	3.40%	4.30%
Weighted average wage increase	4.87%	4.89%

Expected rate of compensation increases (for pay-related plans).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(2)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph j

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant