Other Financial Information - Schedule of Depreciation and Amortization components (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Business Acquisition [Line Items]
Depreciation expense	$ 79	$ 74
Amortization of intangibles (includes $49 and $49 reported in Cost of Sales, respectively)	323	167
Amortization of capitalized software	20	19
Total	422	260
Amortization of intangibles in Cost of Sales	49	49
National Instruments
Business Acquisition [Line Items]
Amortization of intangible assets	$ 139	$ 105