CONSOLIDATED STATEMENTS OF COMMON STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	Common stock	Additional Paid In Capital	Retained Earnings
Balance (in shares) at Dec. 31, 2020		933,000
Beginning Balance at Dec. 31, 2020	$ 1,068	$ 93	$ 605	$ 370
Increase (Decrease) in Stockholder's Equity
Net income	32			32
Common dividends declared to parent	(20)			(20)
Contribution of capital by parent	30		30
Balance (in shares) at Mar. 31, 2021		933,000
Ending Balance at Mar. 31, 2021	$ 1,110	$ 93	635	382
Balance (in shares) at Dec. 31, 2021	933,000	933,000
Beginning Balance at Dec. 31, 2021	$ 1,103	$ 93	642	368
Increase (Decrease) in Stockholder's Equity
Net income	47			47
Common dividends declared to parent	(22)			(22)
Contribution of capital by parent	$ 30		30
Balance (in shares) at Mar. 31, 2022	933,000	933,000
Ending Balance at Mar. 31, 2022	$ 1,158	$ 93	$ 672	$ 393