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INVENTORIES (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 67.6 $ 64.4
Building materials for resale 6.4 4.1
Other 2.5 1.8
Total 76.5 70.3
Raw materials, noncurrent $ 9.4 $ 2.5