Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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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.

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Acquisitions and Divestitures Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)
Business Acquisition & Disposal [Line Items]
Purchase price of businesses, net of cash acquired			$ 96	$ 243	$ 469
Net sales	$ 4,162	$ 4,570	8,313	$ 8,717
Goodwill	6,520		6,520		6,536
Automation Solutions [Member]
Business Acquisition & Disposal [Line Items]
Goodwill	5,404		5,404		$ 5,467
Automation Solutions [Member] \| Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition & Disposal [Line Items]
Number of additional businesses acquired					8
Net sales					$ 300
Goodwill					213
Goodwill expected tax deductible amount					158
Intangibles					$ 155
Intangible assets, weighted average useful life					9 years
Climate Technologies [Member]
Business Acquisition & Disposal [Line Items]
Goodwill	$ 726		726		$ 668
Climate Technologies [Member] \| Series of Individually Immaterial Business Acquisitions [Member]
Business Acquisition & Disposal [Line Items]
Purchase price of businesses, net of cash acquired			$ 96