INCOME TAXES - Components of Net Deferred Income Tax Assets (Liability) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Accrued expenses and reserves	$ 2,538	$ 2,635
Progress collections, contract assets and deferred items	2,520	2,093
Deferred expenses	1,925	1,597
Principal pension plans	1,806	2,375
Insurance company loss reserves	1,782	1,700
Non-U.S. loss carryforwards	1,240	1,354
Other compensation and benefits	975	1,397
Investment securities	516	(1,278)
Principal retiree benefit plans	692	896
Other	703	1,329
Total deferred tax assets	14,697	14,098
Deferred tax liabilities
Investment in global operations	(1,011)	(1,775)
Other	(1,981)	(1,468)
Total deferred tax liabilities	(2,992)	(3,243)
Net deferred income tax asset (liability)	11,705	10,855
Valuation allowances	7,171	7,081
Valuation allowances related to assets other than non-U.S. loss carryforwards	3,325	$ 1,653
Net Operating Loss Carryforwards Expiring in Various Years Ending from 2022 Through 2024
Deferred tax assets
Non-U.S. loss carryforwards	8
Net Operating Loss Carryforwards Expiring in Various Years Ending from 2025 Through 2041
Deferred tax assets
Non-U.S. loss carryforwards	427
Net Operating Loss Carryforwards That May be Carried Forward Indefinitely
Deferred tax assets
Non-U.S. loss carryforwards	$ 805