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INFORMATION ON REPORTABLE SEGMENTS - Financial Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Revenues:
Revenues	$ 501.3	$ 423.3	$ 966.5	$ 823.1
Income:
Consolidated operating income	74.6	51.3	139.2	101.1
Acquisition-related and other costs	2.3	1.5	4.9	2.1
Amortization of acquired intangible assets	16.8	11.5	31.6	17.8
Special charges, net	(0.2)	0.0	0.4	0.0
Other operating expense, net	8.4	0.0	8.4	0.0
Ingénia Technologies Inc.
Income:
Acquisition-related and other costs	0.6		2.9
Amortization of acquired intangible assets	5.3		8.6
Ingénia Technologies Inc. | Cost of Sales | Step-Up of Inventory
Income:
Acquisition-related and other costs	0.9		1.8
ASPEQ Heating Group | Cost of Sales | Step-Up of Inventory
Income:
Acquisition-related and other costs		1.1		1.1
HVAC reportable segment
Revenues:
Revenues	356.5	269.0	658.9	520.6
Detection and Measurement reportable segment
Revenues:
Revenues	144.8	154.3	307.6	302.5
Operating Segments
Revenues:
Revenues	501.3	423.3	966.5	823.1
Income:
Consolidated operating income	117.6	84.4	217.4	158.8
Operating Segments | HVAC reportable segment
Revenues:
Revenues	356.5	269.0	658.9	520.6
Income:
Consolidated operating income	83.7	55.2	152.1	102.9
Special charges, net	(0.1)	0.0	0.2	0.0
Operating Segments | Detection and Measurement reportable segment
Revenues:
Revenues	144.8	154.3	307.6	302.5
Income:
Consolidated operating income	33.9	29.2	65.3	55.9
Special charges, net	(0.1)	0.0	0.2	0.0
Corporate expense
Income:
Corporate expense	12.0	16.6	25.9	31.2
Segment Reconciling Items
Income:
Acquisition-related and other costs	2.3	1.5	4.9	2.1
Long-term incentive compensation expense	3.7	3.5	7.0	6.6
Amortization of acquired intangible assets	16.8	11.5	31.6	17.8
Special charges, net	(0.2)	0.0	0.4	0.0
Other operating expense, net	8.4	$ 0.0	8.4	$ 0.0
Segment Reconciling Items | ULC Robotics
Income:
Other operating expense, net	$ 8.4		$ 8.4

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