INVESTMENTS - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended						6 Months Ended						6 Months Ended
	Jun. 30, 2014 investment		Mar. 31, 2014 investment	Jun. 30, 2013 investment		Mar. 31, 2013 investment	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014 Variable Interest Entity, Not Consolidated issuer	Dec. 31, 2013 Variable Interest Entity, Not Consolidated	Jun. 30, 2014 Perpetual securities:	Jun. 30, 2014 Perpetual securities: Lower Limit	Jun. 30, 2014 Perpetual securities: Minimum Upper Limit	Jun. 30, 2014 Parent Company
Schedule of Investments [Line Items]
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ 28	[1]		$ 0	[1]		$ 31	[1]	$ 55	[1]
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, number of investments	1		1	1		0
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, amortized cost	128		63	297			128		297
Reclassified investments from the held-to-maturity portfolio to the available-for-sale portfolio, aggregate unrealized gain (loss)	(28)		(8)	(108)
Securities available for sale, fixed maturities, amortized cost											6,831	6,724				365
Securities available for sale, fixed maturities, fair value											$ 7,407	$ 6,916				$ 383
Perpetual securities, interest coupons that were fixed at issuance subsequently change to a floating short-term interest rate													floating short-term interest rate of 125 to more than 300 basis points above an appropriate market index
Maturity date (in years)													25 years
Perpetual securities, floating short-term interest rate basis point above market index														1.25%	3.00%
Number of issuers of VIEs not-consolidated											189
Percentage that the lending policy requires that the fair value of the securities and/or unrestricted cash received as collateral be of the fair value of the loaned securities	102.00%						102.00%

[1] Includes $0 and $1 for the six-month periods ended June 30, 2014 and 2013, respectively, for impairments due to severity and duration of decline in fair value; and $28 and $0 for the three-month periods and $31 and $54 for the six-month periods ended June 30, 2014 and 2013, respectively, from change in intent to sell securities