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Income Taxes (Components Of Pretax Income) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Tax Examination [Line Items]
U.S.	$ (104,276)	$ 78,240	$ (69,665)	$ 179,701
Foreign	(3,456)	1,264	8,797	10,680
PRETAX (LOSS) INCOME	$ (107,732)	$ 79,504	$ (60,868)	$ 190,381

X

- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.4-08.(h)(1)(i))

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Topic 235

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

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