Business Segment Information Product Line Information (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 4,151	$ 4,147
Automation Solutions [Member] | Measurement & Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales	830	858
Automation Solutions [Member] | Valves, Actuators & Regulators [Member]
Disaggregation of Revenue [Line Items]
Net sales	913	874
Automation Solutions [Member] | Industrial Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	507	542
Automation Solutions [Member] | Process Control Systems & Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	602	525
Operating Segments [Member] | Automation Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 2,852	$ 2,799