INVESTMENTS - Pretax Other-Than-Temporary Impairment Losses by Investment Category (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	$ 3	[1]	$ 55	[1]
Severity and duration of decline in fair value impairment
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	0		1
Change in intent impairment
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	3		54
Corporate Bonds
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	3		38
Sovereign and Supranational
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	0		16
Equity Securities
Gain (Loss) on Investments [Line Items]
Other-than-temporary impairment losses	$ 0		$ 1

[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