Consolidated Statements of Capitalization - Capital Stock - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Beginning balance	$ 4,723	$ 5,420	$ 4,792
Net Income (Loss)	468	466	540
Separation of PGS equity from TEC		(992)
Equity contributions from Parent	600	300	605
Dividends to Parent	(469)	(472)	(517)
Other		1
Ending balance	5,322	4,723	5,420
Common Stock [Member]
Beginning balance	$ 4,505	$ 5,075	$ 4,470
Beginning balance	10	10	10
Separation of PGS equity from TEC	$ (871)	$ (871)
Equity contributions from Parent	600	300	$ 605
Other		1
Ending balance	$ 5,105	$ 4,505	$ 5,075
Ending balance	10	10	10
Retained Earnings [Member]
Beginning balance	$ 219	$ 346	$ 323
Net Income (Loss)	468	466	540
Separation of PGS equity from TEC	(121)	(121)
Dividends to Parent	(469)	(472)	(517)
Ending balance	218	219	346
Accumulated Other Comprehensive Loss [Member]
Beginning balance	(1)	(1)	(1)
Ending balance	$ (1)	$ (1)	$ (1)