REVENUES FROM CONTRACTS - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Disaggregation of Revenue [Line Items]
Revenues	$ 448.7	$ 370.5	$ 1,271.8	$ 1,031.6
Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	402.0	329.3	1,133.8	919.3
Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	46.7	41.2	138.0	112.3
Package and process cooling equipment and services, and engineered air movement solutions
Disaggregation of Revenue [Line Items]
Revenues	170.8	134.5	502.4	381.8
Boilers, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	118.4	93.3	307.4	257.8
Underground locators, inspection and rehabilitation equipment, and robotic systems
Disaggregation of Revenue [Line Items]
Revenues	65.9	61.5	199.0	194.1
Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	93.6	81.2	263.0	197.9
HVAC
Disaggregation of Revenue [Line Items]
Revenues	289.2	227.8	809.8	639.6
HVAC \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	271.3	212.2	747.6	588.1
HVAC \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	17.9	15.6	62.2	51.5
HVAC \| Package and process cooling equipment and services, and engineered air movement solutions
Disaggregation of Revenue [Line Items]
Revenues	170.8	134.5	502.4	381.8
HVAC \| Boilers, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	118.4	93.3	307.4	257.8
HVAC \| Underground locators, inspection and rehabilitation equipment, and robotic systems
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
HVAC \| Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Detection and Measurement
Disaggregation of Revenue [Line Items]
Revenues	159.5	142.7	462.0	392.0
Detection and Measurement \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	130.7	117.1	386.2	331.2
Detection and Measurement \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	28.8	25.6	75.8	60.8
Detection and Measurement \| Package and process cooling equipment and services, and engineered air movement solutions
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Detection and Measurement \| Boilers, electrical heating, and ventilation
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
Disaggregation of Revenue [Line Items]
Revenues	65.9	61.5	199.0	194.1
Detection and Measurement \| Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	$ 93.6	$ 81.2	$ 263.0	$ 197.9