Consolidated Statements Of Equity (Deficit) - USD ($) shares in Thousands, $ in Millions	Successor [Member] Common Stock [Member]	Successor [Member] Additional Paid-In Capital [Member]	Successor [Member] Retained Earnings (Accumulated Deficit) [Member]	Successor [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Successor [Member]	Predecessor [Member] Common Stock [Member]	Predecessor [Member] Additional Paid-In Capital [Member]	Predecessor [Member] Retained Earnings (Accumulated Deficit) [Member]	Predecessor [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Predecessor [Member] Treasury Common Stock [Member]	Predecessor [Member]
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				(1,232)
Stock plans										$ (1)	(1)
Stock plans (in shares)										(122)
Net Income								60			60
Other comprehensive (loss) income, net of tax									11		11
Balance at ending at Mar. 31, 2021						$ 27	4,817	(8,915)	(744)	$ (15)	(4,830)
Balance (in shares) at Mar. 31, 2021						106,025				(1,354)
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				(1,232)
Net Income											4,541
Other comprehensive (loss) income, net of tax									359		359
Balance at ending at Apr. 30, 2021	$ 2	$ 4,106			$ 4,108	$ 2	4,106				4,108
Balance (in shares) at Apr. 30, 2021	244,401					244,401
Balance at beginning at Mar. 31, 2021						$ 27	4,817	(8,915)	(744)	$ (15)	(4,830)
Balance (in shares) at Mar. 31, 2021						106,025				(1,354)
Stock plans							1				1
Net Income								4,481			4,481
Other comprehensive (loss) income, net of tax									348		348
Cancellation of Predecessor equity						$ (27)	(4,818)	$ 4,434	$ 396	$ 15
Cancellation of Predecessor equity (in shares)						(106,025)				1,354
Issuance of Successor common stock						$ 2	4,106				4,108
Issuance of Successor common stock (in shares)						244,401
Balance at ending at Apr. 30, 2021	$ 2	4,106			4,108	$ 2	4,106				4,108
Balance (in shares) at Apr. 30, 2021	244,401					244,401
Net Income			$ 99		99
Other comprehensive (loss) income, net of tax				$ 41	41
Balance at ending at Jun. 30, 2021	$ 2	4,106	99	41	4,248
Balance (in shares) at Jun. 30, 2021	244,401
Balance at beginning at Apr. 30, 2021	$ 2	4,106			4,108	$ 2	$ 4,106				$ 4,108
Balance (in shares) at Apr. 30, 2021	244,401					244,401
Net Income					225
Other comprehensive (loss) income, net of tax				44	44
Balance at ending at Sep. 30, 2021	$ 2	4,114	225	44	4,385
Balance (in shares) at Sep. 30, 2021	244,407
Balance at beginning at Jun. 30, 2021	$ 2	4,106	99	41	4,248
Balance (in shares) at Jun. 30, 2021	244,401
Stock plans		8			8
Stock plans (in shares)	6
Net Income			126		126
Other comprehensive (loss) income, net of tax				3	3
Balance at ending at Sep. 30, 2021	$ 2	4,114	225	44	4,385
Balance (in shares) at Sep. 30, 2021	244,407
Balance at beginning at Dec. 31, 2021	$ 2	4,124	414	60	4,600
Balance (in shares) at Dec. 31, 2021	244,416
Stock plans		15			15
Stock plans (in shares)	60
Net Income			65		65
Other comprehensive (loss) income, net of tax				(2)	(2)
Balance at ending at Mar. 31, 2022	$ 2	4,139	479	58	4,678
Balance (in shares) at Mar. 31, 2022	244,476
Balance at beginning at Dec. 31, 2021	$ 2	4,124	414	60	4,600
Balance (in shares) at Dec. 31, 2021	244,416
Net Income					286
Balance at ending at Sep. 30, 2022	$ 2	4,171	700	60	4,933
Balance (in shares) at Sep. 30, 2022	244,999
Balance at beginning at Mar. 31, 2022	$ 2	4,139	479	58	4,678
Balance (in shares) at Mar. 31, 2022	244,476
Stock plans		13			13
Stock plans (in shares)	493
Net Income			101		101
Other comprehensive (loss) income, net of tax				4	4
Balance at ending at Jun. 30, 2022	$ 2	4,152	580	62	4,796
Balance (in shares) at Jun. 30, 2022	244,969
Stock plans		19			19
Stock plans (in shares)	30
Net Income			120		120
Other comprehensive (loss) income, net of tax				(2)	(2)
Balance at ending at Sep. 30, 2022	$ 2	$ 4,171	$ 700	$ 60	$ 4,933
Balance (in shares) at Sep. 30, 2022	244,999