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Regulatory Accounting
9 Months Ended
Sep. 30, 2016
regulatory accounting [Abstract]  
Regulatory Accounting [Text Block]
Regulatory Accounting

As of September 30, 2016, Houston Electric has not recognized an allowed equity return of $341 million because such return will be recognized as it is recovered in rates.  During the three months ended September 30, 2016 and 2015, Houston Electric recognized approximately $22 million and $16 million, respectively, of the allowed equity return not previously recognized.  During the nine months ended September 30, 2016 and 2015, Houston Electric recognized approximately $52 million and $37 million, respectively, of the allowed equity return not previously recognized.