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RETIREMENT PLANS AND POSTRETIREMENT BENEFITS - Schedule of Net Periodic (Benefit) Cost (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jun. 30, 2024 | Jun. 30, 2024
Retirement Benefits [Abstract] |  |
Interest cost | $ 5.6 | $ 13.2
Expected return on plan assets | (6.2) | (14.4)
Net periodic benefit | $ (0.6) | $ (1.2)

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