FAIR VALUE MEASUREMENTS - Changes in Available-For-Sale Investments and Derivatives Classified as Level 3 (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	$ 3,197		$ 3,803
Realized gains or losses included in earnings	105		51
Unrealized gains or losses included in other comprehensive income	(105)		(57)
Purchases	0		0
Issuances	0		0
Sales	(387)		(753)
Settlements	(13)		(53)
Transfers into Level 3	174	[1]	206
Transfers out of Level 3	(2,625)	[2]	0
Balance, end of period	346		3,197
Change in unrealized gains (losses) still held	105		0
Fixed Maturities | Mortgage- and asset-backed Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	338		394
Realized gains or losses included in earnings	0		(3)
Unrealized gains or losses included in other comprehensive income	(72)		(33)
Purchases	0		0
Issuances	0		0
Sales	0		0
Settlements	(13)		(20)
Transfers into Level 3	125	[1]	0
Transfers out of Level 3	(9)	[2]	0
Balance, end of period	369		338
Change in unrealized gains (losses) still held	0		(3)
Fixed Maturities | Public Utilities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	420		422
Realized gains or losses included in earnings	0		0
Unrealized gains or losses included in other comprehensive income	(20)		(2)
Purchases	0		0
Issuances	0		0
Sales	(400)		0
Settlements	0		0
Transfers into Level 3	0	[1]	0
Transfers out of Level 3	0	[2]	0
Balance, end of period	0		420
Change in unrealized gains (losses) still held	0		0
Fixed Maturities | Sovereign and Supranational
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	418		434
Realized gains or losses included in earnings	0		0
Unrealized gains or losses included in other comprehensive income	0		(16)
Purchases	0		0
Issuances	0		0
Sales	0		0
Settlements	0		0
Transfers into Level 3	0	[1]	0
Transfers out of Level 3	(418)	[2]	0
Balance, end of period	0		418
Change in unrealized gains (losses) still held	0		0
Fixed Maturities | Banks/financial Institutions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	1,024		1,074
Realized gains or losses included in earnings	0		0
Unrealized gains or losses included in other comprehensive income	(4)		70
Purchases	0		0
Issuances	0		0
Sales	0		(326)
Settlements	0		0
Transfers into Level 3	0	[1]	206	[1]
Transfers out of Level 3	(997)	[2]	0
Balance, end of period	23		1,024
Change in unrealized gains (losses) still held	0		0
Fixed Maturities | Other Corporate
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	986		1,105
Realized gains or losses included in earnings	0		2
Unrealized gains or losses included in other comprehensive income	0		(87)
Purchases	0		0
Issuances	0		0
Sales	0		(34)
Settlements	0		0
Transfers into Level 3	0	[1]	0
Transfers out of Level 3	(986)	[2]	0
Balance, end of period	0		986
Change in unrealized gains (losses) still held	0		0
Perpetual securities | Banks/financial Institutions
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	215		526
Realized gains or losses included in earnings	0		49
Unrealized gains or losses included in other comprehensive income	3		33
Purchases	0		0
Issuances	0		0
Sales	0		(393)
Settlements	0		0
Transfers into Level 3	49	[1]	0
Transfers out of Level 3	(215)	[2]	0
Balance, end of period	52		215
Change in unrealized gains (losses) still held	0		0
Equity securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	4		4
Realized gains or losses included in earnings	0		0
Unrealized gains or losses included in other comprehensive income	(1)		0
Purchases	0		0
Issuances	0		0
Sales	0		0
Settlements	0		0
Transfers into Level 3	0	[1]	0
Transfers out of Level 3	0	[2]	0
Balance, end of period	3		4
Change in unrealized gains (losses) still held	0		0
Derivatives | Interest rate swaps
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	29	[3]	30	[3]
Realized gains or losses included in earnings	(8)	[3]	(1)	[3]
Unrealized gains or losses included in other comprehensive income	0	[3]	0	[3]
Purchases	0	[3]	0	[3]
Issuances	0	[3]	0	[3]
Sales	(20)	[3]	0	[3]
Settlements	0	[3]	0	[3]
Transfers into Level 3	0	[1],[3]	0	[3]
Transfers out of Level 3	0	[2],[3]	0	[3]
Balance, end of period	1	[3]	29	[3]
Change in unrealized gains (losses) still held	(8)	[3]	(1)
Derivatives | Foreign currency swaps
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	(172)	[3]	(56)	[3]
Realized gains or losses included in earnings	84	[3]	(61)	[3]
Unrealized gains or losses included in other comprehensive income	(11)	[3]	(22)	[3]
Purchases	0	[3]	0	[3]
Issuances	0	[3]	0	[3]
Sales	0	[3]	0	[3]
Settlements	0	[3]	(33)	[3]
Transfers into Level 3	0	[1],[3]	0	[3]
Transfers out of Level 3	0	[2],[3]	0	[3]
Balance, end of period	(99)	[3]	(172)	[3]
Change in unrealized gains (losses) still held	84	[3]	(61)
Derivatives | Credit default swaps
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	(65)	[3]	(130)	[3]
Realized gains or losses included in earnings	29	[3]	65	[3]
Unrealized gains or losses included in other comprehensive income	0	[3]	0	[3]
Purchases	0	[3]	0	[3]
Issuances	0	[3]	0	[3]
Sales	33	[3]	0	[3]
Settlements	0	[3]	0	[3]
Transfers into Level 3	0	[1],[3]	0	[3]
Transfers out of Level 3	0	[2],[3]	0	[3]
Balance, end of period	(3)	[3]	(65)	[3]
Change in unrealized gains (losses) still held	$ 29	[3]	$ 65

[1] Due to a lack of visibility to observe significant inputs to price

[2] A result of changing our pricing methodology to a valuation method that uses observable market data as significant inputs to estimate fair value

[3] Derivative assets and liabilities are presented net