Condensed Statements of Consolidated Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenues:
Utility revenues	$ 2,717	$ 2,709
Non-utility revenues	62	54
Total	2,779	2,763
Expenses:
Utility natural gas, fuel and purchased power	1,078	1,098
Non-utility cost of revenues, including natural gas	40	35
Operation and maintenance	663	688
Depreciation and amortization	319	318
Taxes other than income taxes	138	147
Total	2,238	2,286
Operating Income	541	477
Other Income (Expense):
Gain (loss) on equity securities	38	(17)
Gain (loss) on indexed debt securities	(39)	106
Gain on sale	0	303
Interest expense and other finance charges	(148)	(153)
Interest expense on Securitization Bonds	(2)	(4)
Other income, net	13	18
Total	(138)	253
Income Before Income Taxes	403	730
Income tax expense	78	199
Net Income	325	531
Income allocated to preferred shareholders	12	13
Income Available to Common Shareholders	$ 313	$ 518
Basic Earnings (Loss) Per Common Share [Abstract]
Basic Earnings Per Common Share (in dollars per share)	$ 0.50	$ 0.82
Diluted Earnings (Loss) Per Common Share [Abstract]
Diluted Earnings Per Common Share (in dollars per share)	$ 0.49	$ 0.82
Weighted Average Common Shares Outstanding, Basic (in shares)	630,309	629,134
Weighted Average Common Shares Outstanding, Diluted (in shares)	633,051	631,304