SEGMENT FINANCIAL DATA (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) segment	Jun. 30, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			3
Net Sales	$ 3,972	$ 4,962	$ 7,860	$ 9,285
Operating profit	442	805	757	1,305
Product
Segment Reporting Information [Line Items]
Net Sales	3,275	4,139	6,422	7,705
Service
Segment Reporting Information [Line Items]
Net Sales	697	823	1,438	1,580
United States Operations
Segment Reporting Information [Line Items]
Net Sales	2,192	2,713	4,203	4,932
Europe
Segment Reporting Information [Line Items]
Net Sales	969	1,301	2,148	2,593
Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	645	738	1,164	1,350
Other
Segment Reporting Information [Line Items]
Net Sales	166	210	345	410
Operating Segments
Segment Reporting Information [Line Items]
Net Sales	4,048	5,076	8,021	9,496
Operating profit	525	850	911	1,402
Operating Segments | HVAC
Segment Reporting Information [Line Items]
Net Sales	2,291	2,735	4,250	4,903
Operating profit	358	545	525	838
Operating Segments | HVAC | Product
Segment Reporting Information [Line Items]
Net Sales	1,976	2,370	3,633	4,231
Operating Segments | HVAC | Service
Segment Reporting Information [Line Items]
Net Sales	315	365	617	672
Operating Segments | Refrigeration
Segment Reporting Information [Line Items]
Net Sales	700	955	1,508	1,917
Operating profit	61	121	160	248
Operating Segments | Refrigeration | Product
Segment Reporting Information [Line Items]
Net Sales	609	861	1,322	1,728
Operating Segments | Refrigeration | Service
Segment Reporting Information [Line Items]
Net Sales	91	94	186	189
Operating Segments | Fire & Security
Segment Reporting Information [Line Items]
Net Sales	1,057	1,386	2,263	2,676
Operating profit	106	184	226	316
Operating Segments | Fire & Security | Product
Segment Reporting Information [Line Items]
Net Sales	762	1,021	1,622	1,956
Operating Segments | Fire & Security | Service
Segment Reporting Information [Line Items]
Net Sales	295	365	641	720
Eliminations and other
Segment Reporting Information [Line Items]
Net Sales	(76)	(114)	(161)	(211)
Operating profit	(56)	(15)	(91)	(32)
General corporate expenses
Segment Reporting Information [Line Items]
Net Sales	0	0	0	0
Operating profit	$ (27)	$ (30)	$ (63)	$ (65)