DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Components of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		$ (370.0)
Net other comprehensive loss		30.4	$ (164.4)	$ (127.7)
Ending Balance		(339.3)	(370.0)
Cash Flow Hedge [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance		(370.0)	(211.4)
Other comprehensive loss before reclassifications	[1]	(8.7)	(155.7)
Amounts reclassified from AOCI	[2],[3]	39.4	(3.1)
Tax benefit		0.0	0.2
Net other comprehensive loss		30.7	(158.6)
Ending Balance		(339.3)	(370.0)	$ (211.4)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive loss before reclassifications		2.0
Amounts reclassified from AOCI		$ (0.3)	$ (7.8)

[1] Excludes NCI gains of $2.0 million reclassified from AOCI at December 31, 2015.

[2] Excludes NCI losses of $0.3 million and $7.8 million reclassified from AOCI at December 31, 2016 and 2015, respectively.

[3] For additional details on the amounts reclassified from AOCI, reference the Reclassifications from Accumulated Other Comprehensive Income table below.