Consolidated Statements Of Equity (Deficit) - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings (Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Common Stock [Member]	Total
Balance at beginning at Dec. 31, 2020	$ 27	$ 4,817	$ (8,975)	$ (755)	$ (14)	$ (4,900)
Balance (in shares) at Dec. 31, 2020	106,025,000				(1,232,000)
Stock plans, net		1			$ (1)
Stock plans, net (in shares)					(122,000)
Net income			4,541			4,541
Other comprehensive income, net of tax				359		359
Cancellation of Predecessor equity	$ (27)	(4,818)	4,434	396	$ 15
Cancellation of Predecessor equity (in shares)	(106,025,000)				1,354,000
Issuance of Successor common stock	$ 2	4,106				$ 4,108
Issuance of Successor common stock (in shares)	244,401,000					244,401,000
Balance at ending at Apr. 30, 2021	$ 2	4,106				$ 4,108
Balance (in shares) at Apr. 30, 2021	244,401,000
Stock plans, net		18				18
Stock plans, net (in shares)	15,000
Net income			414			414
Other comprehensive income, net of tax				60		60
Balance at ending at Dec. 31, 2021	$ 2	4,124	414	60		4,600
Balance (in shares) at Dec. 31, 2021	244,416,000
Stock plans, net		74				74
Stock plans, net (in shares)	605,000
Net income			441			441
Other comprehensive income, net of tax				19		19
Balance at ending at Dec. 31, 2022	$ 2	4,198	855	79		5,134
Balance (in shares) at Dec. 31, 2022	245,021,000
Stock plans, net		99				99
Stock plans, net (in shares)	792,000
Net income			29			29
Other comprehensive income, net of tax				17		17
Balance at ending at Dec. 31, 2023	$ 2	$ 4,297	$ 884	$ 96		$ 5,279
Balance (in shares) at Dec. 31, 2023	245,813,000