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Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
RELATED PARTIES (Summary of Balance Sheet Presentation) (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Related Party Transaction [Line Items] Ìý Ìý
Partnership distribution payable $ 0.0 $ (43.5)
Related Party Transaction, Due from (to) Related Party 152.6 220.0
Trade Accounts Receivable [Member] Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý
Due from Related Parties, Current 108.7 176.0
Derivative Asset [Member] Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý
Due from Related Parties, Current 71.2 89.3
Derivative Liability [Member] Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý
Due to Related Parties, Current (26.1) 0.0
Other Current Assets [Member] Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý
Due from Related Parties, Current 0.2 0.0
Other Current Liabilities [Member] Ìý Ìý
Related Party Transaction [Line Items] Ìý Ìý
Due to Related Parties, Current $ (1.4) $ (1.8)