INVESTMENTS - Investments in Variable Interest Entities Not Consolidated (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Variable Interest Entity [Line Items]
Cost or Amortized Cost	$ 45,204	$ 54,426
Securities held to maturity, fixed maturities, fair value	47,047	54,841
Assets, fair value	62,459	63,964
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	6,907	7,738
Securities available for sale, fixed maturities, fair value	7,287	8,350
Securities available for sale, perpetual securities, amortized cost	413	736
Securities available for sale, perpetual securities, fair value	392	751
Cost or Amortized Cost	3,521	3,829
Securities held to maturity, fixed maturities, fair value	3,522	3,922
Assets, amortized cost	10,841	12,303
Assets, fair value	$ 11,201	$ 13,023

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

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+ Details

- Definition

For an unclassified balance sheet, this item represents investments in debt securities which are categorized as held-to-maturity. The held-to-maturity category is for those securities that the entity has the positive intent and ability to hold until maturity.

+ References

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+ Details

- Definition

This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

+ References+ Details