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BENEFIT PLANS - ESTIMATED FUTURE BENEFIT PAYMENTS ON DEFINED BENEFIT PLAN (Details)
$ in Millions
Dec. 31, 2019
USD ($)
Retirement Benefits [Abstract]  
2020 $ 19.9
2021 18.9
2022 18.9
2023 19.3
2024 19.6
2025-2029 $ 111.2