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ACQUISITIONS AND DISCONTINUED OPERATIONS - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 01, 2021 | Oct. 02, 2021 | Sep. 26, 2020 | Oct. 02, 2021 | Sep. 26, 2020
Discontinued Operations |  |  |  |  |
Gain (loss) on disposition of discontinued operations, net of tax |  | $ 354.4 | $ 0.1 | $ 357.7 | $ (1.2)
Discontinued Operations, Disposed of by Sale |  |  |  |  |
Discontinued Operations |  |  |  |  |
Gain (loss) on disposition of discontinued operations, net of tax |  | (3.3) | $ 0.1 | 0.0 | $ (1.2)
Discontinued Operations, Disposed of by Sale | Transformer Solutions |  |  |  |  |
Discontinued Operations |  |  |  |  |
Payment for acquisition | $ 620.6 |  |  |  |
Gain (loss) on disposition of discontinued operations, net of tax |  | $ 357.7 |  | $ 357.7 |

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