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REVENUE RECOGNITION - Sales Disaggregated by Product and Service (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Net sales $ 20,613 $ 17,456 $ 18,608
Product      
Segment Reporting Information [Line Items]      
Net sales 17,214 14,347 15,360
Service      
Segment Reporting Information [Line Items]      
Net sales 3,399 3,109 3,248
Operating Segments      
Segment Reporting Information [Line Items]      
Net sales 21,032 17,796 19,004
Operating Segments | HVAC      
Segment Reporting Information [Line Items]      
Net sales 11,390 9,478 9,712
Operating Segments | HVAC | Product      
Segment Reporting Information [Line Items]      
Net sales 9,985 8,165 8,279
Operating Segments | HVAC | Service      
Segment Reporting Information [Line Items]      
Net sales 1,405 1,313 1,433
Operating Segments | Refrigeration      
Segment Reporting Information [Line Items]      
Net sales 4,127 3,333 3,792
Operating Segments | Refrigeration | Product      
Segment Reporting Information [Line Items]      
Net sales 3,653 2,927 3,405
Operating Segments | Refrigeration | Service      
Segment Reporting Information [Line Items]      
Net sales 474 406 387
Operating Segments | Fire & Security      
Segment Reporting Information [Line Items]      
Net sales 5,515 4,985 5,500
Operating Segments | Fire & Security | Product      
Segment Reporting Information [Line Items]      
Net sales 3,985 3,585 4,072
Operating Segments | Fire & Security | Service      
Segment Reporting Information [Line Items]      
Net sales 1,530 1,400 1,428
Eliminations and other      
Segment Reporting Information [Line Items]      
Net sales $ (419) $ (340) $ (396)