Common Equity (Common Share Activity) (Details)	3 Months Ended
	Mar. 31, 2020 shares
Common Stock Oustanding [Roll Forward]
Shares outstanding, January 1, 2020 (in shares)	245,022,800
Shareowner Direct Plan (in shares)	107,622
Equity-based compensation plans (in shares)	98,205
Shares outstanding, March 31, 2020 (in shares)	249,503,754
Equity Forward Agreements [Member]
Common Stock Oustanding [Roll Forward]
Equity forward agreements (in shares)	4,275,127