Business Segments Product Line Information (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	$ 4,161	$ 4,151
Automation Solutions [Member] \| Measurement & Analytical Instrumentation [Member]
Disaggregation of Revenue [Line Items]
Net sales	698	795
Automation Solutions [Member] \| Valves, Actuators & Regulators [Member]
Disaggregation of Revenue [Line Items]
Net sales	806	913
Automation Solutions [Member] \| Industrial Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	508	507
Automation Solutions [Member] \| Systems & Solutions
Disaggregation of Revenue [Line Items]
Net sales	680	637
Operating Segments [Member] \| Automation Solutions [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 2,692	$ 2,852

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 606
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 924
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856

+ Details