Other Financial Data (Components of Depreciation and Amortization) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Depreciation expense	$ 67	$ 77	$ 213	$ 240
Amortization of intangibles (includes $49, $31, $147 and $59 reported in Cost of Sales, respectively)	169	124	504	266
Amortization of capitalized software	21	21	63	65
Depreciation and amortization	257	222	780	571
Amortization of intangibles in Cost of Sales	49	31	147	59
AspenTech
Amortization of intangible assets	$ 99	$ 49	$ 297	$ 49