OTHER FINANCIAL INFORMATION - Schedule of Depreciation and Amortization components (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
Depreciation expense	$ 79	$ 72	$ 158	$ 146
Amortization of intangibles (includes $49, $49, $98 and $98 reported in Cost of Sales, respectively)	322	168	645	335
Amortization of capitalized software	23	23	43	42
Total	424	263	846	523
Amortization of intangibles in cost of sales	49	49	98	98
National Instruments
Business Acquisition [Line Items]
Amortization of intangible assets	$ 141	$ 107	$ 280	$ 212