Business Segments Product Line Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 3,914	$ 4,684	$ 12,227	$ 13,401
Automation Solutions [Member] | Measurement & Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales	735	945	2,381	2,730
Automation Solutions [Member] | Valves, Actuators & Regulators [Member]
Disaggregation of Revenue [Line Items]
Net sales	842	941	2,609	2,752
Automation Solutions [Member] | Industrial Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	469	548	1,470	1,664
Automation Solutions [Member] | Process Control Systems & Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	543	591	1,690	1,688
Operating Segments [Member] | Automation Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 2,589	$ 3,025	$ 8,150	$ 8,834