REGULATION, REGULATORY FILINGS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	1 Months Ended	3 Months Ended
	Dec. 31, 2011 BGSS [Member]	Jan. 25, 2012 Regulatory Filing [Member] BGSS [Member]	Dec. 31, 2011 Regulatory Filing [Member] EE [Member]	Dec. 31, 2011 Regulatory Filing [Member] EE-Rebates and Incentives [Member]	Dec. 31, 2011 Regulatory Filing [Member] EE-Access Program [Member]
Schedule of Regulatory [Line Items]
Recovery Amount Approved by the Board of Public Utilities				$ 18.4	$ 1.0
Weighted Cost of Capital			7.10%
Return on Equity			10.30%
Customer Refunds And Bill Credits	$ (71.2)	$ (91.0)