FINANCIAL INSTRUMENTS - Effects of Derivatives on Earnings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Total revenues	$ 8,913	$ 8,253	$ 24,376	$ 23,194
Cost of equipment and services	7,804	7,201	20,415	20,078
Selling, general, and administrative expenses	1,226	1,135	3,366	3,593
Other income (expense) – net	71	179	1,025	307
Sales of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	2	(19)	(5)	(25)
Effect of derivatives not designated as hedges	6	0	0	0
Cost of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	14	3
Effect of derivatives not designated as hedges	(17)	37	(6)	143
Selling, general, and administrative expenses
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Effect of derivatives not designated as hedges	(55)	31	(113)	0
Other income (expense) – net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	(2)
Effect of derivatives not designated as hedges	6	21	(7)	(4)
Foreign currency exchange contracts | Sales of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	2	(19)	(5)	(25)
Effect of derivatives not designated as hedges	6	0	0	0
Foreign currency exchange contracts | Cost of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	14	3
Effect of derivatives not designated as hedges	(16)	32	1	113
Foreign currency exchange contracts | Selling, general, and administrative expenses
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Effect of derivatives not designated as hedges	(48)	31	(92)	0
Foreign currency exchange contracts | Other income (expense) – net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Effect of derivatives not designated as hedges	6	21	(7)	(5)
Interest rate contracts | Sales of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Interest rate contracts | Cost of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Interest rate contracts | Selling, general, and administrative expenses
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	0
Interest rate contracts | Other income (expense) – net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effects of cash flow hedges	0	0	0	(2)
Commodity and other contracts | Sales of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effect of derivatives not designated as hedges	0	0	0	0
Commodity and other contracts | Cost of equipment and services
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effect of derivatives not designated as hedges	(1)	5	(7)	30
Commodity and other contracts | Selling, general, and administrative expenses
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effect of derivatives not designated as hedges	(6)	0	(21)	0
Commodity and other contracts | Other income (expense) – net
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Effect of derivatives not designated as hedges	$ 0	$ 0	$ 0	$ 1