DERIVATIVE INSTRUMENTS - Components of Gain or Loss on Derivatives that Qualified as Cash Flow Hedges (Detail) (Cash flow hedges, USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	$ 4	$ 17	$ (8)	$ (38)
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	0	2	0	(2)
Interest rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	0	0	0	1
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	0	0	0	0
Foreign currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	4	17	(8)	(39)
Net Realized Investment Gains (Losses) Recognized in Income on Derivative (Ineffective Portion)	$ 0	$ 2	$ 0	$ (2)