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 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 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 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 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 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 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					166
Other comprehensive income, net of tax				2	2
Balance at ending at Jun. 30, 2022	$ 2	4,152	580	62	4,796
Balance (in shares) at Jun. 30, 2022	244,969
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 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