Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Millions	Total	Common stock	Additional paid-in capital	Accumulated other comprehensive loss	Accumulated deficit
Balance at beginning of period at Dec. 31, 2022	$ 2,127	$ 3	$ 5,147	$ (49)	$ (2,974)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	96			2	94
Share-based compensation activity	19		19
Balance at end of period at Sep. 30, 2023	2,242	3	5,166	(47)	(2,880)
Balance at beginning of period at Jun. 30, 2023	2,189	3	5,160	(47)	(2,927)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	47				47
Share-based compensation activity	6		6
Balance at end of period at Sep. 30, 2023	2,242	3	5,166	(47)	(2,880)
Balance at beginning of period at Dec. 31, 2023	2,325	3	5,175	(47)	(2,806)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	124				124
Share-based compensation activity	25		25
Balance at end of period at Sep. 30, 2024	2,474	3	5,200	(47)	(2,682)
Balance at beginning of period at Jun. 30, 2024	2,406	3	5,189	(47)	(2,739)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	57				57
Share-based compensation activity	11		11
Balance at end of period at Sep. 30, 2024	$ 2,474	$ 3	$ 5,200	$ (47)	$ (2,682)