DISCONTINUED OPERATIONS - Financial Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Sep. 30, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		$ 847		$ 3,205
Cost of sales		516		2,029
SG&A		122		399
Gain on sale of business		(10,576)		(13,359)
Other deductions, net		69		148
Earnings before income taxes		10,716		13,988
Income taxes	$ 5	2,004	$ 27	3,009
Earnings, net of tax	$ (15)	8,712	$ (88)	10,979
Climate Technologies
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		847		3,156	$ 5,000
Cost of sales		516		2,000
SG&A		122		391
Gain on sale of business		(10,576)		(10,576)
Other deductions, net		69		136
Earnings before income taxes		10,716		11,205
Income taxes		2,004		2,356
Earnings, net of tax		8,712		8,849
ISE
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales		0		49
Cost of sales		0		29
SG&A		0		8
Gain on sale of business		0		(2,783)
Other deductions, net		0		12
Earnings before income taxes		0		2,783
Income taxes		0		653
Earnings, net of tax		$ 0		$ 2,130