ETE Merger and Other Transactions (Tables)

12 Months Ended

Dec. 31, 2015

ETE Merger and Holdco Transaction [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block]

Summarized financial information for MGE and NEG is as follows:

	Year Ended December 31, 2013
Revenue from discontinued operations	$	415
Net income of discontinued operations, excluding effect of taxes and overhead allocations	65