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Supplemental Disclosures (Schedule Of Income Tax Benefit (Expense)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Supplemental Disclosures [Abstract]
Current tax benefit (expense)	$ (11,689)	$ 2,088	$ (47,276)	$ (36,706)
Deferred tax benefit	(12,687)	71,714	(44,866)	195,356
Income tax benefit	$ 24,376	$ (73,802)	$ 92,142	$ (158,650)

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Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.

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