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BASIS OF PRESENTATION (Details) - USD ($)
$ in Millions
1 Months Ended
Jun. 08, 2021
Apr. 19, 2021
Nov. 11, 2020
Sep. 02, 2020
Jul. 03, 2021
Dec. 31, 2020
Revenue Benchmark | Product Concentration Risk | HVAC reportable segment            
Business Acquisition [Line Items]            
Revenue percentage         5.00%  
ULC Robotics            
Business Acquisition [Line Items]            
Payment for acquisition       $ 89.2    
Cash acquired       4.0    
Deferred payment       $ 45.0    
Contingent consideration liability         $ 24.3 $ 24.3
Sensors & Software Inc.            
Business Acquisition [Line Items]            
Payment for acquisition     $ 15.5      
Cash acquired     0.3      
Deferred payment     $ 4.0      
Contingent consideration liability         $ 0.7 $ 0.7
Sealite            
Business Acquisition [Line Items]            
Payment for acquisition   $ 81.6        
Cash acquired   $ 2.3        
SPX Transformer Solutions, Inc.            
Business Acquisition [Line Items]            
Proceeds from sale of business $ 645.0          
SPX Transformer Solutions, Inc. | Revenue Benchmark | Product Concentration Risk            
Business Acquisition [Line Items]            
Revenue percentage 25.00%