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OTHER LONG-TERM LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]  
Schedule of other long-term liabilities
Other long-term liabilities consisted of the following:
(in millions)December 31,
2020		December 31,
2019
Environmental liabilities$141.9 $121.8 
Defined benefit pension plan liabilities73.5 73.8 
Post-retirement medical plan liabilities22.0 17.5 
Early railcar return liability 13.9 17.6 
East Coast Storage Assets Contingent Consideration— 16.1 
Other17.2 4.1 
Total other long-term liabilities$268.5 $250.9