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ACQUISITIONS, DIVESTITURES, AND ASSETS AND LIABILITIES HELD FOR SALE - Narrative (Details) - USD ($) $ in Millions					3 Months Ended
	Sep. 30, 2024	Aug. 30, 2024	Aug. 19, 2024	Jun. 03, 2024	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Business Acquisition [Line Items]
Goodwill						$ 22,021	$ 21,825
Sundyne \| Forecast
Business Acquisition [Line Items]
Payments to acquire businesses, gross					$ 2,160
Air Products' Liquified Natural Gas Process Technology And Equipment Business (LNG)
Business Acquisition [Line Items]
Percentage acquired	100.00%
Consideration amount	$ 1,837
Goodwill						879
Air Products' Liquified Natural Gas Process Technology And Equipment Business (LNG) \| Minimum
Business Acquisition [Line Items]
Intangible asset, useful life	4 years
Air Products' Liquified Natural Gas Process Technology And Equipment Business (LNG) \| Maximum
Business Acquisition [Line Items]
Intangible asset, useful life	20 years
CAES Systems Holdings LLC
Business Acquisition [Line Items]
Percentage acquired		100.00%
Consideration amount		$ 1,935
Goodwill						557
CAES Systems Holdings LLC \| Minimum
Business Acquisition [Line Items]
Intangible asset, useful life		2 years
CAES Systems Holdings LLC \| Maximum
Business Acquisition [Line Items]
Intangible asset, useful life		15 years
Civitanavi Systems S.p.A.
Business Acquisition [Line Items]
Consideration amount			$ 200
Intangible assets acquired						75
Goodwill						107
Carrier Global Corporation's Global Access Solutions Business
Business Acquisition [Line Items]
Percentage acquired				100.00%
Consideration amount				$ 4,913
Goodwill						$ 2,828
Carrier Global Corporation's Global Access Solutions Business \| Minimum
Business Acquisition [Line Items]
Intangible asset, useful life				10 years
Carrier Global Corporation's Global Access Solutions Business \| Maximum
Business Acquisition [Line Items]
Intangible asset, useful life				20 years