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Financial Instruments And Risk Management (Effect Of Derivative Instruments On The Condensed Consolidated Statements Of Operations Derivatives In Fair Value Hedging Relationships) (Details) (USD $) In Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 34,985		$ 39,780
Amount of Gain or (Loss) Recognized in Earnings on Hedged Items	(34,985)		(39,780)
2018 Senior Notes [Member] \| Interest Expense [Member]
Amount of Gain or (Loss) Recognized in Earnings on Hedged Items	(34,985)		(39,780)
Interest Rate Swaps [Member] \| Interest Expense [Member]
Amount of Gain or (Loss) Recognized in Earnings on Derivatives	$ 34,985		$ 39,780

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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