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Supplemental Disclosures (Schedule Of Cash Paid For Interest And Income Taxes) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Supplemental Disclosures [Abstract]    
Interest $ 385,238 $ 412,460
Income taxes $ 13,175 $ 18,935