DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Derivative Instruments in Statement of Financial Position) (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Net Total	[1]	$ (173.7)	$ (57.9)
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Net Total		44.1	123.9
Other Assets, Net [Member]
Derivatives, Fair Value [Line Items]
Net Total		3.2	39.7
Accounts Payable and Other [Member]
Derivatives, Fair Value [Line Items]
Net Total	[2],[3]	(196.3)	(130.9)
Other Long-term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Net Total		$ (24.7)	$ (90.6)

[1] As determined by nationally-recognized statistical ratings organizations.

[2] Includes $12.6 million held of cash collateral at December 31, 2015.

[3] Includes $12.6 million of cash collateral held at December 31, 2015.