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ACQUISITIONS AND DISCONTINUED OPERATIONS - Pro Forma Results (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Oct. 01, 2022 | Sep. 30, 2023 | Oct. 01, 2022
Acquisitions and Discontinued Operations [Abstract] |  |  |  |
Revenues | $ 448.7 | $ 397.0 | $ 1,319.0 | $ 1,108.8
Income from continuing operations | 39.8 | 9.0 | 118.6 | 23.5
Net income (loss) | $ (16.3) | $ (0.4) | $ 63.9 | $ 6.4
Income (loss) from continuing operations per share of common stock basic (in dollars per share) | $ 0.87 | $ 0.20 | $ 2.61 | $ 0.52
Income (loss) from continuing operations per share of common stock diluted (in dollars per share) | 0.85 | 0.20 | 2.55 | 0.51
Net income (loss) per share of common stock basic (in dollars per share) | (0.36) | (0.01) | 1.40 | 0.14
Net income (loss) per share of common stock diluted (in dollars per share) | $ (0.35) | $ (0.01) | $ 1.37 | $ 0.14

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