Regulation (Refund Fuel Cost Over Recoveries) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 17, 2009 PUCT Docket No. 37788	May 12, 2010 PUCT Docket No. 38253	Oct. 20, 2010 PUCT Docket No. 38802	Feb. 18, 2011 PUCT Docket No. 39159
Regulation [Line Items]
Refund Amount	$ 11,800	$ 11,100	$ 12,800	$ 11,800

Public Utilities Fuel Cost Over Recoveries Refund Payments

No definition available.

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Namespace Prefix:	ee_
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Balance Type:	credit
Period Type:	instant