DERIVATIVES AND OTHER FINANCIAL INSTRUMENTS (Details 3) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended					1 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Mar. 31, 2014 Interest Rate Swap [Member]	Mar. 31, 2014 Commodity Option [Member] lb	Mar. 31, 2014 Fair value hedges Interest Rate Swap [Member]	Mar. 31, 2013 Fair value hedges Interest Rate Swap [Member]	Nov. 30, 2009 Fair value hedges Interest Rate Swap [Member]	Jul. 31, 2011 Fair value hedges Interest Rate Swap [Member] Terminated contracts	Nov. 30, 2010 Fair value hedges Interest Rate Swap [Member] Terminated contracts	Mar. 31, 2014 Lower limit Interest Rate Swap [Member]	Mar. 31, 2014 Upper limit Interest Rate Swap [Member]
Interest rate swap fair value hedges
Derivative, Nonmonetary Notional Amount, Mass					1,500,000
Notional Amount of Underlying Debt				$ 500.0		$ 0		$ 700.0
Notional Amount									500.0	200.0
Cash received									23.5	15.6
Amortization of basis adjustment for terminated interest rate swaps recognized in interest expense						(2.3)	(2.3)
Derivative, Forward Interest Rate											3.79%	3.94%
Deferred Gains/(Losses) on Derivatives Qualifying as Hedges for the Period	(41.8)	(4.4)		22.2
Money market funds, classified as Level Two	$ 448.3		$ 447.8