Annual report pursuant to Section 13 and 15(d)

RELATED PARTIES (Summary of Balance Sheet Presentation) (Details)

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RELATED PARTIES (Summary of Balance Sheet Presentation) (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]      
Short-term Notes Payable $ (43.5) $ (44.2) $ (44.2)
Due to Related Parties, Current (1.8)   (12.3)
Due to Related Parties, Noncurrent 0.0   (41.4)
Related Party Transaction, Due from (to) Related Party 220.0   8.1
Trade Accounts Receivable [Member]      
Related Party Transaction [Line Items]      
Due from Related Parties, Current 176.0   68.1
Derivative [Member]      
Related Party Transaction [Line Items]      
Due from Related Parties, Current $ 89.3   $ 37.9