INFORMATION ON REPORTABLE SEGMENTS - Financial Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 30, 2024	Apr. 01, 2023
Revenues:
Revenues	$ 465.2	$ 399.8
Income:
Consolidated operating income	64.6	49.8
Acquisition related and other costs	2.6	0.6
Long-term incentive compensation expense	3.3	3.1
Amortization of acquired intangible assets	14.8	6.3
Special charges, net	0.6	0.0
Acquisition-related costs	2.6	0.6
Ingénia Technologies Inc.
Income:
Acquisition related and other costs	2.3
Amortization of acquired intangible assets	3.3
Acquisition-related costs	2.3
Cost of Sales | Ingénia Technologies Inc.
Income:
Acquisition related and other costs	0.9
Acquisition-related costs	0.9
HVAC reportable segment
Revenues:
Revenues	302.4	251.6
Detection and Measurement reportable segment
Revenues:
Revenues	162.8	148.2
Operating Segments
Revenues:
Revenues	465.2	399.8
Income:
Consolidated operating income	99.8	74.4
Operating Segments | HVAC reportable segment
Revenues:
Revenues	302.4	251.6
Income:
Consolidated operating income	68.4	47.7
Special charges, net	0.3
Operating Segments | Detection and Measurement reportable segment
Revenues:
Revenues	162.8	148.2
Income:
Consolidated operating income	31.4	26.7
Special charges, net	0.3
Corporate expense
Income:
Corporate expense	13.9	14.6
Material Reconciling Items
Income:
Acquisition related and other costs	2.6	0.6
Long-term incentive compensation expense	3.3	3.1
Amortization of acquired intangible assets	14.8	6.3
Special charges, net	0.6	0.0
Acquisition-related costs	$ 2.6	$ 0.6