Other Deductions, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Other Deductions, Net [Line Items]
Amortization of intangibles (intellectual property and customer relationships)	$ 482	$ 336	$ 277
Restructuring costs	72	75	132
Acquisition/divestiture costs	69	91	0
Foreign currency transaction (gains) losses	50	12	2
Investment-related gains & gains from sales of capital assets	(69)	(30)	(21)
Loss on Copeland equity method investment	177	0	0
Russia business exit	47	135	0
Other	(145)	(100)	(71)
Total	683	519	319
Amortization of intangible assets	764	530	432
Mark-to-market gain (loss)	24	(50)
National Instruments
Other Deductions, Net [Line Items]
Mark-to-market gain (loss)	56
AspenTech
Other Deductions, Net [Line Items]
Acquisition/divestiture costs		91
Amortization of intangible assets	$ 258	$ 97
Open Systems International, Inc. | Backlog
Other Deductions, Net [Line Items]
Amortization of intangible assets			$ 30