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Basis of Presentation and Accounting Policies (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Reconciliation of the tax provision at the U.S. Federal statutory rate to the provision for income taxes
Tax expense at the U.S. federal statutory rate	$ 186	$ 113
Dividends-received deduction	(32)	(32)
Foreign related investments	(5)	(3)
Valuation allowance	(7)	(19)
Other	3	(3)
Income tax expense (benefit)	$ 145	$ 56

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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- Definition

The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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- Definition

The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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