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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Accrued Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2020
Dec. 31, 2019
Disclosure Text Block [Abstract]    
Accrued employment costs $ 158.3 $ 61.7
Accrued interest 47.1 29.0
Accrued dividends 24.9 17.8
Other 69.5 17.8
Accrued liabilities $ 299.8 $ 126.3