DERIVATIVE INSTRUMENTS - Gain or Loss Recognized in Income on Non-qualifying Strategies (Detail) (Non-qualifying strategies, USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	$ 94	$ 80
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	(4)	(3)
Foreign currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	84	50
Foreign currency options
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	2	0
Credit default swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized within Net Realized Investment Gains (Losses)	$ 12	$ 33