GOODWILL AND OTHER INTANGIBLE ASSETS - NET (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Finite Lived Intangible Assets Future Amortization Expense Abstract
Future Amortization Expense - 2019	$ 386
Future Amortization Expense - 2020	349
Future Amortization Expense - 2021	312
Future Amortization Expense - 2022	288
Future Amortization Expense - 2023	251
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	6,456	$ 6,582
Accumulated Amortization	(3,347)	(3,131)
Net Carrying Amount	3,109	3,451
Goodwill [Line Items]
Balance at beginning of period,	18,277
Acquisitions/Divestitures	(2,472)
Currency Translation Adjustment	(259)
Balance at end of period,	15,546	18,277
Finite And Indefinite Other Intangible Assets [Abstract]
Trademarks with indefinite lives	1,030	1,045
Gross carrying amount	7,486	7,627
Accumulated Amortization	(3,347)	(3,131)
Net carrying amount	4,139	4,496
Goodwill and Intangible Assets Paragraph Details [Abstract]
Amortization of intangible assets	395	398	$ 304
Aerospace [Member]
Goodwill [Line Items]
Balance at beginning of period,	2,468
Acquisitions/Divestitures	(193)
Currency Translation Adjustment	(17)
Balance at end of period,	2,258	2,468
Performance Materials And Technologies [Member]
Goodwill [Line Items]
Balance at beginning of period,	5,242
Acquisitions/Divestitures	23
Currency Translation Adjustment	(118)
Balance at end of period,	5,147	5,242
Home And Building Technologies [Member]
Goodwill [Line Items]
Balance at beginning of period,	5,960
Acquisitions/Divestitures	(2,640)
Currency Translation Adjustment	(82)
Balance at end of period,	3,238	5,960
Safety And Productivity Solutions [Member]
Goodwill [Line Items]
Balance at beginning of period,	4,607
Acquisitions/Divestitures	338
Currency Translation Adjustment	(42)
Balance at end of period,	4,903	4,607
Patents and Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	1,996	1,990
Accumulated Amortization	(1,332)	(1,272)
Net Carrying Amount	664	718
Finite And Indefinite Other Intangible Assets [Abstract]
Accumulated Amortization	(1,332)	(1,272)
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	3,785	3,911
Accumulated Amortization	(1,510)	(1,366)
Net Carrying Amount	2,275	2,545
Finite And Indefinite Other Intangible Assets [Abstract]
Accumulated Amortization	(1,510)	(1,366)
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	326	328
Accumulated Amortization	(206)	(189)
Net Carrying Amount	120	139
Finite And Indefinite Other Intangible Assets [Abstract]
Accumulated Amortization	(206)	(189)
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	349	353
Accumulated Amortization	(299)	(304)
Net Carrying Amount	50	49
Finite And Indefinite Other Intangible Assets [Abstract]
Accumulated Amortization	$ (299)	$ (304)