POSTRETIREMENT BENEFIT PLANS - Narrative (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) category	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) category	Sep. 30, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Number of categories | category	3		3
Defined contribution plan costs	$ 47	$ 73	$ 210	$ 253
Deferred compensation expense	13	15	34	50
Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan costs	47	46	175	156
Deferred compensation expense	13	13	27	42
Principal retiree benefit plans
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	(22)	(37)	(79)	(109)
Principal retiree benefit plans | Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	(22)	(22)	(65)	(66)
Other pension plans
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	(3)	(32)	(15)	(91)
Other pension plans | Continuing operations
Defined Benefit Plan Disclosure [Line Items]
Plans cost (income)	$ (3)	$ (11)	$ (3)	$ (31)