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COMMITMENTS AND CONTINGENT LIABILITIES, LEGAL PROCEEDINGS (Details) (USD $)	12 Months Ended		12 Months Ended						12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Minimum [Member]	Sep. 30, 2014 Maximum [Member]	Sep. 30, 2014 Enviromental remediation costs expended, net of recoveries [Member]	Sep. 30, 2013 Enviromental remediation costs expended, net of recoveries [Member]	Sep. 30, 2014 Enviromental remediation costs liability for future expenditures [Member]	Sep. 30, 2013 Enviromental remediation costs liability for future expenditures [Member]	Sep. 30, 2013 July 2013 SBC Filing [Member] SBC [Member]
Site Contingency [Line Items]
Recovery period	7 years
Site contingency, recovery from third party of environmental remediation cost	$ 20,000,000
Approved rate, amount									18,700,000
Regulatory assets	377,575,000	402,202,000			30,916,000	46,968,000	177,000,000	183,600,000
Litigation settlement, gross			$ 151,300,000	$ 249,800,000

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Public Utilities, Approved Rate, Amount

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Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

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Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 340

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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Amount of the estimated recovery from third parties recorded in the period for an individual site that reduces environmental remediation expense.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 12

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-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13296-110859



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