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INVENTORIES (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 59.7 $ 53.4
Building materials for resale 3.6 3.6
Other 1.9 2.0
Total 65.2 $ 59.0
Raw materials, noncurrent $ 2.1