Income Tax (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income (loss) before income tax expense
Income (Loss) recorded in The Netherlands	$ 54	$ 264	$ (376)
Income (loss) from foreign operations	282	427	(1,120)
Income (Loss) before income tax benefit (expense)	336	691	(1,496)
Income tax benefit (expense)
The Netherlands taxes - current	(11)	(3)	4
Foreign taxes - current	(104)	(53)	(54)
Current taxes	(115)	(56)	(50)
The Netherlands taxes - deferred	(2)	(4)
Foreign deferred - taxes	(64)	(89)	145
Income tax benefit (expense)	$ (181)	$ (149)	$ 95

The component of income tax expense for the period representing amounts paid or payable (or refundable) as determined by applying the provisions of enacted federal tax law to the domestic taxable Income or Loss from continuing operations.

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The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.

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The component of total income tax expense for the period comprised of the increase (decrease) during the period in the entity's domestic deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of the federally enacted tax law.

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The component of total income tax expense for the period comprised of the increase (decrease) in the entity's net foreign deferred tax assets and liabilities attributable to continuing operations as determined by applying the provisions of applicable enacted tax laws of countries other than the country of domicile.

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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.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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