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ACQUISITIONS AND DIVESTITURES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Divestiture/Spinoff [Abstract]
Pretax gain on sale	$ (3,000,000)	$ (1,000,000)	$ 0
Pre-separation funding	0	0	2,801,000,000
Income before taxes	6,012,000,000	7,559,000,000	7,487,000,000
Goodwill	16,058,000,000	15,563,000,000
Assets	64,586,000,000	$ 58,679,000,000	$ 57,773,000,000
Garrett [Member]
Divestiture/Spinoff [Abstract]
Spinoff Transaction Share Conversion			0.1
Pre-separation funding			$ 1,600,000,000
Resideo [Member]
Divestiture/Spinoff [Abstract]
Spinoff Transaction Share Conversion			0.17
Pre-separation funding			$ 1,200,000,000
Spinoff [Member]
Divestiture/Spinoff [Abstract]
Income before taxes			400,000,000
Goodwill			2,800,000,000
Assets			5,500,000,000
Liabilities			7,200,000,000
Total Acquisitions [Member]
Business Acquisition [Line Items]
Purchase price	261,000,000		535,000,000
Divestiture/Spinoff [Abstract]
Goodwill	$ 167,000,000
Transnorm [Member]
Business Acquisition [Line Items]
Name of acquired entity	Transnorm
Divestiture/Spinoff [Abstract]
Goodwill			$ 380,000,000
Sparta Systems [Member]
Business Acquisition [Line Items]
Name of acquired entity	Sparta Systems
Purchase price	$ 1,300,000,000

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