REVENUES FROM CONTRACTS - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 592.8	$ 483.7	$ 1,627.8	$ 1,450.2
Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	521.9	432.4	1,464.8	1,288.5
Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	70.9	51.3	163.0	161.7
Package and process cooling equipment and services, and engineered air movement and handling solutions
Disaggregation of Revenue [Line Items]
Revenues	236.5	217.7	674.4	650.1
Hydronic heating, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	150.9	117.6	412.7	344.1
Underground locators, inspection and rehabilitation equipment, and robotic systems
Disaggregation of Revenue [Line Items]
Revenues	63.4	64.7	189.6	191.8
Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	142.0	83.7	351.1	264.2
HVAC
Disaggregation of Revenue [Line Items]
Revenues	387.4	335.3	1,087.1	994.2
HVAC \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	353.9	314.9	1,003.4	912.3
HVAC \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	33.5	20.4	83.7	81.9
HVAC \| Package and process cooling equipment and services, and engineered air movement and handling solutions
Disaggregation of Revenue [Line Items]
Revenues	236.5	217.7	674.4	650.1
HVAC \| Hydronic heating, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	150.9	117.6	412.7	344.1
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	205.4	148.4	540.7	456.0
Detection and Measurement \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	168.0	117.5	461.4	376.2
Detection and Measurement \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	37.4	30.9	79.3	79.8
Detection and Measurement \| Package and process cooling equipment and services, and engineered air movement and handling solutions
Disaggregation of Revenue [Line Items]
Revenues	0.0	0.0	0.0	0.0
Detection and Measurement \| Hydronic heating, 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	63.4	64.7	189.6	191.8
Detection and Measurement \| Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	$ 142.0	$ 83.7	$ 351.1	$ 264.2