UNAUDITED INTERIM CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Millions	Total	Common   Stock	Additional  Paid-in Capital	Retained Deficit	Accumulated Other Comprehensive Income
Beginning balance at Dec. 31, 2022	$ 1,587	$ 3	$ 1,759	$ (286)	$ 111
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Distribution payable to parent	(45)		(45)
Comprehensive income (loss):
Net income	7			7
Other comprehensive income (loss), net of taxes	17				17
Total comprehensive income	24
Ending balance at Mar. 31, 2023	1,566	3	1,714	(279)	128
Beginning balance at Dec. 31, 2023	1,362	3	1,714	(290)	(65)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Dividend to parent	(75)			(75)
Comprehensive income (loss):
Net income	145			145
Other comprehensive income (loss), net of taxes	(10)				(10)
Total comprehensive income	135
Ending balance at Mar. 31, 2024	$ 1,422	$ 3	$ 1,714	$ (220)	$ (75)