EQUITY METHOD INVESTMENT AND NOTE RECEIVABLE - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 02, 2024	May 31, 2023	Aug. 31, 2024	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]
Interest income				$ 32	$ 58	$ 105	$ 96
Loss on Copeland note receivable				279	$ 0	279	$ 0
Loss on Copeland note receivable, net of tax						$ 217
Loss from equity method investment (in dollars per share)						$ 0.38
Copeland
Schedule of Equity Method Investments [Line Items]
Equity method investment				1,008		$ 1,008
Copeland | Related Party
Schedule of Equity Method Investments [Line Items]
Interest income				$ 24		86
Copeland
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership percentage by parent		40.00%
Copeland
Schedule of Equity Method Investments [Line Items]
Proceeds from divestiture		$ 9,700
Notes receivable, consideration		$ 2,250				$ 1,900
Copeland | Subsequent Event [Member]
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of notes receivable	$ 1,900
Copeland | Forecast
Schedule of Equity Method Investments [Line Items]
Proceeds from sale of equity method investments			$ 1,500
Future indemnity obligations			$ 33