ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($) $ in Millions				3 Months Ended			6 Months Ended			12 Months Ended
	Mar. 12, 2025	Nov. 15, 2024	Oct. 11, 2023	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2022	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Sep. 30, 2024
Business Acquisition [Line Items]
Settlement of AspenTech share awards							$ 76	$ 0
Net sales				$ 4,432	$ 4,376		8,608	8,493
Acquisition/divestiture fees and related costs				144	5		157	85
Purchase price of businesses, net of cash acquired							36	8,342
Goodwill				17,999			17,999				$ 18,067
Gain on subordinated interest					0		0	79
Loss on divestiture of business				0	39		0
AspenTech
Business Acquisition [Line Items]
Total consideration paid in cash at closing	$ 7,200
Business combination, accrued deal fees	76
Business combination, accrued deal fees, net of tax	65
Settlement of AspenTech share awards								76
Business combination, deal and transaction fees	127
Business combination, deal and transaction fees, net of tax	$ 113
National Instruments
Business Acquisition [Line Items]
Total consideration paid in cash at closing			$ 8,467
Net sales			$ 1,700
Net sales										$ 170
Amortization of intangible assets					34			68
Net earnings from continuing operations common stockholders					575			1,022
Acquisition/divestiture fees and related costs				$ 160	16	$ 69	$ 179	146
National Instruments | Backlog Amortization
Business Acquisition [Line Items]
Amortization of intangible assets					34			68
National Instruments | Fair Value Adjustment to Inventory
Business Acquisition [Line Items]
Net earnings from continuing operations common stockholders									$ 213
National Instruments | Retention Bonus
Business Acquisition [Line Items]
Net earnings from continuing operations common stockholders									$ 47
Open Grid Systems Limited
Business Acquisition [Line Items]
Purchase price of businesses, net of cash acquired		$ 46
Goodwill		32
Intangible assets		$ 20
Weighted-average useful life		5 years
Gain on subordinated interest					$ 79
Loss on divestiture of business								$ 39