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BASIS OF PRESENTATION - Impact Change on the Segment Income Previously Presented (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Oct. 01, 2022 | Sep. 30, 2023 | Oct. 01, 2022
Assets acquired: |  |  |  |
Consolidated operating income | $ 57,700,000 | $ 37,300,000 | $ 158,800,000 | $ 75,900,000
Acquisition-related and other costs | 2,900,000 |  | 5,000,000.0 |
Amortization of intangible assets | 14,600,000 | 6,700,000 | 32,400,000 | 23,100,000
Special charges, net | 0 | 0 | 0 | 100,000
ITL |  |  |  |
Assets acquired: |  |  |  |
Acquisition-related and other costs |  | 100,000 |  | 1,100,000
As Previously Presented |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 37,300,000 |  | 75,900,000
Effect of Change |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 0 |  | 0
Operating Segments |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income | 91,600,000 | 63,400,000 | 250,400,000 | 159,100,000
Operating Segments | HVAC reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income | 58,300,000 | 33,100,000 | 161,200,000 | 82,000,000.0
Special charges, net |  | 0 |  | 100,000
Operating Segments | Detection and Measurement reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income | 33,300,000 | 30,300,000 | 89,200,000 | 77,100,000
Special charges, net |  | 0 |  | 0
Operating Segments | As Previously Presented |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 56,600,000 |  | 134,900,000
Operating Segments | As Previously Presented | HVAC reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 30,900,000 |  | 71,700,000
Operating Segments | As Previously Presented | Detection and Measurement reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 25,700,000 |  | 63,200,000
Operating Segments | Effect of Change |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 6,800,000 |  | 24,200,000
Operating Segments | Effect of Change | HVAC reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 2,200,000 |  | 10,300,000
Operating Segments | Effect of Change | Detection and Measurement reportable segment |  |  |  |
Assets acquired: |  |  |  |
Consolidated operating income |  | 4,600,000 |  | 13,900,000
Corporate expense |  |  |  |
Assets acquired: |  |  |  |
Corporate expense | 13,000,000.0 | 17,200,000 | 44,200,000 | 50,200,000
Corporate expense | As Previously Presented |  |  |  |
Assets acquired: |  |  |  |
Corporate expense |  | 17,200,000 |  | 50,200,000
Corporate expense | Effect of Change |  |  |  |
Assets acquired: |  |  |  |
Corporate expense |  | 0 |  | 0
Segment Reconciling Items |  |  |  |
Assets acquired: |  |  |  |
Acquisition-related and other costs | 2,900,000 | 100,000 | 5,000,000.0 | 1,100,000
Long-term incentive compensation expense | 3,400,000 | 2,100,000 | 10,000,000.0 | 7,700,000
Amortization of intangible assets | 14,600,000 | 6,700,000 | 32,400,000 | 23,100,000
Special charges, net | $ 0 | 0 | $ 0 | 100,000
Other operating expense, net |  | 0 |  | 1,000,000.0
Segment Reconciling Items | As Previously Presented |  |  |  |
Assets acquired: |  |  |  |
Acquisition-related and other costs |  | 0 |  | 0
Long-term incentive compensation expense |  | 2,100,000 |  | 7,700,000
Amortization of intangible assets |  | 0 |  | 0
Special charges, net |  | 0 |  | 100,000
Other operating expense, net |  | 0 |  | 1,000,000.0
Segment Reconciling Items | Effect of Change |  |  |  |
Assets acquired: |  |  |  |
Acquisition-related and other costs |  | 100,000 |  | 1,100,000
Long-term incentive compensation expense |  | 0 |  | 0
Amortization of intangible assets |  | 6,700,000 |  | 23,100,000
Special charges, net |  | 0 |  | 0
Other operating expense, net |  | $ 0 |  | $ 0

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