POSTRETIREMENT BENEFIT PLANS - Plan Funded Status (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2023
Change in plan assets
Funded status – surplus (deficit)				$ (4,045)
Pension Plans
Change in projected benefit obligations
Curtailments		$ 23
Change in plan assets
Funded status – surplus (deficit)				(2,835)
Pension Plans | U.S. Plans
Change in projected benefit obligations
Balance at January 1	$ 19,363	297
Transfers from GE at Spin-Off	0	18,999
Service cost	35	35	$ 1
Interest cost	970	1,022	11
Participant contributions	4	4
Plan amendments	0	53
Actuarial loss (gain) – net	(799)	553
Benefits paid	(1,332)	(1,570)
Curtailments	0	(30)
Settlements	0	0
Exchange rate adjustments	0	0
Balance at December 31	18,241	19,363	297
Change in plan assets
Balance at January 1	15,485	362
Transfers from GE at Spin-Off	0	15,402
Actual gain (loss) on plan assets	49	1,101
Employer contributions	172	186
Participant contributions	4	4
Benefits paid	(1,332)	(1,570)
Acquisitions/Divestitures/Mergers	0	0
Exchange rate adjustments	0	0
Balance at December 31	14,378	15,485	362
Funded status – surplus (deficit)	(3,863)	(3,878)
Pension Plans | International Plans
Change in projected benefit obligations
Balance at January 1	3,385	343
Transfers from GE at Spin-Off	0	2,705
Service cost	20	20	18
Interest cost	141	139	6
Participant contributions	0	1
Plan amendments	0	2
Actuarial loss (gain) – net	(357)	161
Benefits paid	(131)	(130)
Curtailments	0	0
Settlements	(4)	0
Exchange rate adjustments	(96)	144
Balance at December 31	2,957	3,385	343
Change in plan assets
Balance at January 1	3,733	20
Transfers from GE at Spin-Off	0	3,482
Actual gain (loss) on plan assets	(263)	145
Employer contributions	30	40
Participant contributions	0	1
Benefits paid	(136)	(130)
Acquisitions/Divestitures/Mergers	0	1
Exchange rate adjustments	(89)	174
Balance at December 31	3,276	3,733	20
Funded status – surplus (deficit)	319	348
Other Postretirement Benefits Plan
Change in projected benefit obligations
Balance at January 1	1,133	0
Transfers from GE at Spin-Off	0	1,149
Service cost	7	6
Interest cost	54	59
Participant contributions	16	18
Plan amendments	0	0
Actuarial loss (gain) – net	(48)	50
Benefits paid	(146)	(149)
Curtailments	0	0
Settlements	0	0
Exchange rate adjustments	0	0
Balance at December 31	1,016	1,133	0
Change in plan assets
Balance at January 1	0	0
Transfers from GE at Spin-Off	0	0
Actual gain (loss) on plan assets	0	0
Employer contributions	130	131
Participant contributions	16	18
Benefits paid	(146)	(149)
Acquisitions/Divestitures/Mergers	0	0
Exchange rate adjustments	0	0
Balance at December 31	0	0	$ 0
Funded status – surplus (deficit)	$ (1,016)	$ (1,133)		$ (1,210)