Investments (Details 8) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Fair value
Fixed income securities	$ 40,440	$ 44,876
Equity securities	550	345
Short-term investments	744	875
Derivative instruments	(7)	(17)
Gross unrealized Gains
Fixed income securities	2,520	4,108
Equity securities	39	36
Derivative instruments	3	2
Gross unrealized Losses
Fixed income securities	(574)	(426)
Equity securities	(7)	(1)
Derivative instruments	(10)	(19)
Unrealized net gains (losses)
Fixed income securities	1,946	3,682
Equity securities	32	35
Derivative instruments	(7)	(17)
EMA limited partnerships	(1)	1
Unrealized net capital gains and losses, pre-tax	1,970	3,701
Amount recognized for:
Insurance reserves	(76)	(771)
DAC and DSI	(197)	(408)
Amounts recognized	(273)	(1,179)
Deferred income taxes	(599)	(888)
Total unrealized net capital gains and losses	1,098	1,634
Fair value of derivative securities classified as assets, with unrealized net gains (losses) in AOCI	(1)	2
Fair value of derivative securities classified as liabilities, with unrealized net gains (losses) in AOCI	$ 6	$ 19

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Deferred Policy Acquisition Costs and Deferred Sales Inducement Costs adjustment included in accumulated other comprehensive income (loss) which represents the amount by which the amortization of DAC and DSI would increase or decrease if the unrealized gains or losses in the respective product portfolios were realized.

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Insurance reserve adjustment included in accumulated other comprehensive income (loss) which represents the amount by which the reserve balance would increase if the net unrealized gains in the applicable product portfolios were realized and reinvested at current lower interest rates, resulting in a premium deficiency.

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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

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