Annual report pursuant to Section 13 and 15(d)

SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Accrued Liabilities) (Details)

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SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION SUPPLEMENTARY FINANCIAL STATEMENT INFORMATION (Accrued Liabilities) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Disclosure Text Block [Abstract]    
Accrued employment costs $ 61.7 $ 74.0
Accrued interest 29.0 38.4
Accrued dividends 17.8 15.0
Accrued royalties 8.4 17.3
Other 9.4 14.2
Accrued liabilities $ 126.3 $ 158.9