Common Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Schedule of Common Equity [Line Items]
Shares available for issuance under the 2020 OIP, Shareowner Direct Plan and 401(k) Savings Plan (in shares)		13,000,000
Proceeds from issuance of common stock, net		$ 25	$ 28	$ 247
Equity Forward Agreements [Member]
Schedule of Common Equity [Line Items]
Proceeds from issuance of common stock, net				$ 222
Common stock issued during the period (in shares)		0	0	4,275,127
Initial forward sale price (in dollars per share)				$ 51.98
Forecast [Member] | At-the-market Offering Program [Member]
Schedule of Common Equity [Line Items]
Proceeds from issuance of common stock, net	$ 225