Business Segments Product Line Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 4,162	$ 4,570	$ 8,313	$ 8,717
Automation Solutions [Member] | Measurement & Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales	816	927	1,646	1,785
Automation Solutions [Member] | Valves, Actuators & Regulators [Member]
Disaggregation of Revenue [Line Items]
Net sales	854	937	1,767	1,811
Automation Solutions [Member] | Industrial Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	494	574	1,001	1,116
Automation Solutions [Member] | Process Control Systems & Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	545	572	1,147	1,097
Operating Segments [Member] | Automation Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 2,709	$ 3,010	$ 5,561	$ 5,809