REVENUES FROM CONTRACTS - Disaggregated Revenue (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Disaggregation of Revenue [Line Items]
Revenues	$ 501.3	$ 423.3	$ 966.5	$ 823.1
Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	435.7	375.3	856.1	731.8
Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	65.6	48.0	110.4	91.3
Package and process cooling equipment and services, and engineered air movement solutions
Disaggregation of Revenue [Line Items]
Revenues	244.6	173.3	432.4	331.6
Boilers, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	111.9	95.7	226.5	189.0
Underground locators, inspection and rehabilitation equipment, and robotic systems
Disaggregation of Revenue [Line Items]
Revenues	66.1	67.2	127.1	133.1
Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	78.7	87.1	180.5	169.4
HVAC
Disaggregation of Revenue [Line Items]
Revenues	356.5	269.0	658.9	520.6
HVAC \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	315.0	248.0	597.4	476.3
HVAC \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	41.5	21.0	61.5	44.3
HVAC \| Package and process cooling equipment and services, and engineered air movement solutions
Disaggregation of Revenue [Line Items]
Revenues	244.6	173.3	432.4	331.6
HVAC \| Boilers, electrical heating, and ventilation
Disaggregation of Revenue [Line Items]
Revenues	111.9	95.7	226.5	189.0
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	144.8	154.3	307.6	302.5
Detection and Measurement \| Revenues recognized at a point in time
Disaggregation of Revenue [Line Items]
Revenues	120.7	127.3	258.7	255.5
Detection and Measurement \| Revenues recognized over time
Disaggregation of Revenue [Line Items]
Revenues	24.1	27.0	48.9	47.0
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	66.1	67.2	127.1	133.1
Detection and Measurement \| Communication technologies, aids to navigation, and transportation systems
Disaggregation of Revenue [Line Items]
Revenues	$ 78.7	$ 87.1	$ 180.5	$ 169.4