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COMMITMENTS AND CONTINGENCIES - Change in asset retirement obligation (Details)
$ in Millions
3 Months Ended
Mar. 31, 2024
USD ($)
Change in asset retirement obligation  
Balance at December 31, 2023 $ 20.2
Settlements (1.8)
Accretion expense 0.2
Currency translation adjustment (0.5)
Balance at March 31, 2024 $ 18.1