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Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
RELATED PARTIES (Summary of Balance Sheet Presentation) (Details) - USD ($)
$ in Millions
Sep. 30, 2018
Jan. 01, 2018
Dec. 31, 2017
Related Party Transaction [Line Items] Ìý Ìý Ìý
Partnership distribution payable $ 43.1 $ 44.2 $ 44.2
Related Party Transaction, Due from (to) Related Party 210.9 Ìý 8.1
Trade Accounts Receivable [Member] Ìý Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý Ìý
Due from Related Parties, Current 73.5 Ìý 68.1
Derivative [Member] Ìý Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý Ìý
Due from Related Parties, Current 186.0 Ìý 37.9
Due to Related Parties, Current 0.0 Ìý (41.4)
Other Current Liabilities [Member] Ìý Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý Ìý
Due to Related Parties, Current $ (5.5) Ìý $ (12.3)