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Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities) (Details)

v3.7.0.1
FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities) (Details) - USD ($)
$ in Millions
Jun. 30, 2017
Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents $ 160.0 $ 177.0
Derivative Asset 72.5 33.1
Total Asset 232.5 210.1
Derivative Liability 20.8 0.5
Total Liability 20.8 0.5
Fair Value, Inputs, Level 1 [Member] Ìý Ìý
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents 40.0 177.0
Derivative Asset 0.0 0.0
Total Asset 40.0 177.0
Derivative Liability 0.0 0.0
Total Liability 0.0 0.0
Fair Value, Inputs, Level 2 [Member] Ìý Ìý
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents 120.0 0.0
Derivative Asset 0.0 1.5
Total Asset 120.0 1.5
Derivative Liability 0.0 0.0
Total Liability 0.0 0.0
Fair Value, Inputs, Level 3 [Member] Ìý Ìý
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents 0.0 0.0
Derivative Asset 72.5 31.6
Total Asset 72.5 31.6
Derivative Liability 20.8 0.5
Total Liability $ 20.8 $ 0.5