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Goodwill and Other Intangible Assets - Goodwill Additional Information (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Sep. 30, 2019
Goodwill [Line Items]
Goodwill, Impairment Loss		$ 424
Goodwill	$ 17,759	17,759	$ 18,178
Building Solutions EMEA/LA
Goodwill [Line Items]
Accumulated goodwill impairment			47
Goodwill, Impairment Loss		0
Goodwill	1,875	1,875	1,849
Global Products
Goodwill [Line Items]
Goodwill, Impairment Loss		0
Goodwill	5,536	5,536	5,547
Building Solutions North America
Goodwill [Line Items]
Goodwill, Impairment Loss	424	424
Goodwill	9,144	9,144	$ 9,588
Building Solutions North America | North America Retail [Member]
Goodwill [Line Items]
Goodwill	$ 228	$ 228

X

- Definition

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.

+ References

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+ References

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