Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Jun. 30, 2023	Sep. 30, 2022
Goodwill [Line Items]
Goodwill			$ 18,131,000,000
Accumulated impairment loss			(781,000,000)
Goodwill [Roll Forward]
Balance at beginning of period		$ 17,350,000,000
Acquisitions		184,000,000
Impairments	$ (184,000,000)	(184,000,000)
Foreign currency translation and other		294,000,000
Balance at end of period		17,644,000,000
Silent-Aire
Goodwill [Roll Forward]
Balance at end of period		0
Building Solutions North America
Goodwill [Line Items]
Goodwill			9,630,000,000
Accumulated impairment loss			(659,000,000)
Goodwill [Roll Forward]
Balance at beginning of period		8,971,000,000
Acquisitions		0
Impairments		0
Foreign currency translation and other		17,000,000
Balance at end of period		8,988,000,000
Building Solutions EMEA/LA
Goodwill [Line Items]
Goodwill			1,794,000,000
Accumulated impairment loss			(47,000,000)
Goodwill [Roll Forward]
Balance at beginning of period		1,747,000,000
Acquisitions		12,000,000
Impairments		0
Foreign currency translation and other		174,000,000
Balance at end of period		1,933,000,000
Building Solutions Asia Pacific
Goodwill [Line Items]
Goodwill			1,116,000,000
Accumulated impairment loss			0
Goodwill [Roll Forward]
Balance at beginning of period		1,116,000,000
Acquisitions		51,000,000
Impairments		0
Foreign currency translation and other		21,000,000
Balance at end of period		1,188,000,000
Global Products
Goodwill [Line Items]
Goodwill			5,591,000,000
Accumulated impairment loss			$ (75,000,000)
Goodwill [Roll Forward]
Balance at beginning of period		5,516,000,000
Acquisitions		121,000,000
Impairments		(184,000,000)
Foreign currency translation and other		82,000,000
Balance at end of period		$ 5,535,000,000