Quarterly report pursuant to Section 13 or 15(d)

Goodwill And Other Intangible Assets And Liabilities (Schedule Of Earnings To Be Recognized On Below Market Sales Contract) (Detail)

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Goodwill And Other Intangible Assets And Liabilities (Schedule Of Earnings To Be Recognized On Below Market Sales Contract) (Detail) (USD $)
In Millions, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Finite-Lived Intangible Assets [Line Items]  
Below-market sales contracts revenue for 2012 (remaining six months) $ 29.4
Below-market sales contracts revenue for 2013 46.0
Below-market sales contracts revenue for 2014 23.1
Below-market sales contracts revenue for 2015 23.0
Below-market sales contracts revenue for 2016 23.0
Below-market sales contracts revenue for 2017   
Total $ 144.5