INCOME TAXES - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Total assets	$ 4,474	$ 1,550
Total liabilities	(68)	(370)
Net deferred income tax asset (liability)	4,406	1,180
Deferred tax assets:
Employee benefits	1,418	222
Contract liabilities	171	193
Inventories	95	84
Operating loss carryforwards	648	176
Other accrued expenses	68	70
Receivables	45	42
Lease liabilities	75	57
Tax credit carryforwards	59	128
Contract assets	79	99
U.S. interest restriction carryforwards	61	0
Goodwill and other intangible assets	1,461	0
Property, plant, and equipment	261	338
Capitalized R&D	547	554
Other	8	0
Total deferred income tax asset	4,996	1,963
Valuation allowances	(540)	(272)	$ (279)	$ (250)
Total deferred income tax asset after valuation allowance	4,456	1,691
Deferred tax liabilities:
Goodwill and other intangible assets	0	(458)
ROU assets	(50)	(47)
Other	0	(6)
Total deferred income tax liability	(50)	(511)
Net deferred income tax asset (liability)	$ 4,406	$ 1,180