INVESTMENTS - Information Regarding Pretax Realized Gains and Losses From Investments (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses realized	$ (3)	[1]	$ (55)	[1]
Derivative gains (losses)	(83)		87
Other	(1)		5
Total realized investment gains (losses)	(46)		156
Fixed maturities:
Gain (Loss) on Investments [Line Items]
Total realized investment gains (losses)	38		65
Fixed maturities: | Available-for-sale Securities
Gain (Loss) on Investments [Line Items]
Gross gains from sales	35		119
Gross losses from sales	(1)		(6)
Net gains (losses) from redemptions	7		6
Other-than-temporary impairment losses realized	(3)		(54)
Equity Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses realized	0		(1)
Total realized investment gains (losses)	0		(1)
Derivatives and other
Gain (Loss) on Investments [Line Items]
Total realized investment gains (losses)	$ (84)		$ 92

[1] Includes $0 and $1 for the three-month periods ended March 31, 2014 and 2013, respectively, for impairments due to severity and duration of decline in fair value and $3 and $54 for the three-month periods ended March 31, 2014 and 2013, respectively, from change in intent to sell securities