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Annual report pursuant to Section 13 and 15(d)

PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details)

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PROPERTY, PLANT AND EQUIPMENT (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Line Items] Ìý Ìý Ìý
Depreciation $ 76.6 $ 65.6 $ 65.8
Interest capitalized 24.8 6.5 Ìý
Depletion 7.5 7.4 $ 6.8
Other Noncurrent Assets [Member] Ìý Ìý Ìý
Property, Plant and Equipment [Line Items] Ìý Ìý Ìý
Deposits for Property, Plant and Equipment $ 34.0 $ 83.0 Ìý