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Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
FAIR VALUE MEASUREMENTS (Fair Value of Assets and Liabilities) (Details) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents $ 357.6 $ 543.4
Derivative assets 107.4 91.5
Total Asset 465.0 634.9
Derivative liability 10.5 3.7
Total Liability 10.5 3.7
Fair Value, Inputs, Level 1 [Member] Ìý Ìý
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Ìý Ìý
Cash equivalents 0.0 0.8
Derivative assets 0.0 0.0
Total Asset 0.0 0.8
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 357.6 542.6
Derivative assets 0.7 0.1
Total Asset 358.3 542.7
Derivative liability 0.7 3.7
Total Liability 0.7 3.7
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 assets 106.7 91.4
Total Asset 106.7 91.4
Derivative liability Ìý 0.0
Total Liability $ 9.8 $ 0.0