PROPERTY, PLANT AND EQUIPMENT AND OPERATING LEASES - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Original cost	$ 27,498	$ 27,332
Less: accumulated depreciation and amortization	(16,935)	(16,678)
Right-of-use operating lease assets	1,782	1,840
Property, plant and equipment – net	$ 12,345	$ 12,494
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment – net	Property, plant and equipment – net