Goodwill And Other Intangible Assets And Liabilities (Schedule Of Earnings To Be Recognized On Below Market Sales Contract) (Details) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011
Goodwill And Other Intangible Assets And Liabilities [Abstract]
Below-market sales contracts revenue for 2011 (remaining three months)	$ 17.9
Below-market sales contracts revenue for 2012	48.8
Below-market sales contracts revenue for 2013	45.3
Below-market sales contracts revenue for 2014	23.0
Below-market sales contracts revenue for 2015	23.0
Below-market sales contracts revenue for 2016	23.1
Total	$ 181.1