INVESTMENTS - Investments in Variable Interest Entities Not Consolidated (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Variable Interest Entity [Line Items]
Securities held to maturity, fixed maturities, fair value	$ 54,841	$ 46,383
Variable Interest Entity, Not Consolidated
Variable Interest Entity [Line Items]
Securities available for sale, fixed maturities, amortized cost	7,738	7,190
Securities available for sale, fixed maturities, fair value	8,350	7,239
Securities available for sale, perpetual securities, amortized cost	736	1,315
Securities available for sale, perpetual securities, fair value	751	1,364
Cost or Amortized Cost	3,829	5,248
Securities held to maturity, fixed maturities, fair value	3,922	5,111
Assets, amortized cost	12,303	13,753
Assets, fair value	$ 13,023	$ 13,714

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