Common Equity Automatic Dividend Reinvestment and Stock Purchase Plan (Details) - Automatic Dividend Reinvestment and Stock Purchase Plan [Member]	3 Months Ended	6 Months Ended
	Jun. 30, 2016 shares	Jun. 30, 2016 shares
Stock Issued During Period, Shares, New Issues	0	0
Shares Held in Reserve Related to Dividend Reinvestment Plan and Stock Purchase Plan	4,774,442	4,774,442