POSTRETIREMENT BENEFIT PLANS - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) category	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) category	Jun. 30, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of categories | category	3		3
Defined contribution plan costs	$ 74	$ 103	$ 163	$ 180
Deferred compensation expense	12	15	21	35
Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan costs	74	63	128	110
Deferred compensation expense	12	12	14	29
Principal retiree benefit plans
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	(21)	(36)	(57)	(72)
Principal retiree benefit plans | Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	(21)	(22)	(43)	(44)
Other pension plans
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	1	(30)	(12)	(59)
Other pension plans | Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	$ 1	$ (10)	$ 0	$ (20)