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REVENUES FROM CONTRACTS - Disaggregated Revenue (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Disaggregation of Revenue [Line Items]        
Revenues $ 679.0 $ 552.4 $ 1,245.8 $ 1,035.0
Revenues recognized at a point in time        
Disaggregation of Revenue [Line Items]        
Revenues 553.2 497.3 1,066.0 942.9
Revenues recognized over time        
Disaggregation of Revenue [Line Items]        
Revenues 125.8 55.1 179.8 92.1
Package and process cooling equipment and services, and engineered air movement and handling solutions        
Disaggregation of Revenue [Line Items]        
Revenues 319.0 238.8 555.0 437.9
Hydronic heating, electrical heating, and ventilation        
Disaggregation of Revenue [Line Items]        
Revenues 161.6 137.9 319.6 261.8
Underground locators, inspection and rehabilitation equipment, and robotic systems        
Disaggregation of Revenue [Line Items]        
Revenues 69.9 69.5 128.5 126.2
Communication technologies, aids to navigation, and transportation systems        
Disaggregation of Revenue [Line Items]        
Revenues 128.5 106.2 242.7 209.1
HVAC | Revenues recognized at a point in time        
Disaggregation of Revenue [Line Items]        
Revenues 399.4 345.4 772.3 649.5
HVAC | Revenues recognized over time        
Disaggregation of Revenue [Line Items]        
Revenues 81.2 31.3 102.3 50.2
HVAC | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 480.6 376.7 874.6 699.7
HVAC | Package and process cooling equipment and services, and engineered air movement and handling solutions | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 319.0 238.8 555.0 437.9
HVAC | Hydronic heating, electrical heating, and ventilation | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 161.6 137.9 319.6 261.8
HVAC | Underground locators, inspection and rehabilitation equipment, and robotic systems | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 0.0 0.0 0.0 0.0
HVAC | Communication technologies, aids to navigation, and transportation systems | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 0.0 0.0 0.0 0.0
Detection and Measurement | Revenues recognized at a point in time        
Disaggregation of Revenue [Line Items]        
Revenues 153.8 151.9 293.7 293.4
Detection and Measurement | Revenues recognized over time        
Disaggregation of Revenue [Line Items]        
Revenues 44.6 23.8 77.5 41.9
Detection and Measurement | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 198.4 175.7 371.2 335.3
Detection and Measurement | Package and process cooling equipment and services, and engineered air movement and handling solutions | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 0.0 0.0 0.0 0.0
Detection and Measurement | Hydronic heating, electrical heating, and ventilation | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 0.0 0.0 0.0 0.0
Detection and Measurement | Underground locators, inspection and rehabilitation equipment, and robotic systems | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues 69.9 69.5 128.5 126.2
Detection and Measurement | Communication technologies, aids to navigation, and transportation systems | Operating Segments        
Disaggregation of Revenue [Line Items]        
Revenues $ 128.5 $ 106.2 $ 242.7 $ 209.1