CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	Common stock	Additional Paid In Capital	Retained Earnings
Beginning Balance at Dec. 31, 2019	$ 967	$ 93	$ 537	$ 337
Balance (in shares) at Dec. 31, 2019		933,000
Increase (Decrease) in Stockholder's Equity
Net income	107			107
Dividends, Common Stock, Cash	(74)			(74)
Contribution of capital by parent	68		68
Ending Balance at Dec. 31, 2020	1,068	$ 93	605	370
Balance (in shares) at Dec. 31, 2020		933,000
Increase (Decrease) in Stockholder's Equity
Net income	108			108
Dividends, Common Stock, Cash	(110)			(110)
Contribution of capital by parent	37		37
Ending Balance at Dec. 31, 2021	$ 1,103	$ 93	642	368
Balance (in shares) at Dec. 31, 2021	933,000	933,000
Increase (Decrease) in Stockholder's Equity
Net income	$ 125			125
Dividends, Common Stock, Cash	(88)			(88)
Contribution of capital by parent	119		119
Ending Balance at Dec. 31, 2022	$ 1,259	$ 93	$ 761	$ 405
Balance (in shares) at Dec. 31, 2022	933,000	933,000