DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule Of Derivatives Not Designated As Hedging Instruments) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	$ 21.2	$ 42.5
Foreign Exchange Contract [Member] | Other Income (Expense) [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	0	0.3
Customer Supply Agreements [Member] | Product Revenues [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	24.1	39.2
Provisional Pricing Arrangements [Member] | Product Revenues [Member]
Derivatives, Fair Value [Line Items]
Amount of Gain/(Loss) Recognized in Income on Derivative	$ (2.9)	$ 3.0