Condensed Statements of Capitalization (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Beginning balance	$ 4,723	$ 5,420
Net income	63	79
Separation of PGS equity from TEC		(992)
Equity contributions from Parent	300	100
Dividends to Parent	(85)	(91)
Other		1
Ending balance	5,001	4,517
Common Stock [Member]
Beginning balance	$ 4,505	$ 5,075
Beginning balance	10	10
Separation of PGS equity from TEC		$ (871)
Equity contributions from Parent	$ 300	100
Other		1
Ending balance	$ 4,805	$ 4,305
Ending balance	10	10
Retained Earnings [Member]
Beginning balance	$ 219	$ 346
Net income	63	79
Separation of PGS equity from TEC		(121)
Dividends to Parent	(85)	(91)
Ending balance	197	213
Accumulated Other Comprehensive Loss [Member]
Beginning balance	(1)	(1)
Ending balance	$ (1)	$ (1)