FAIR VALUE MEASUREMENTS - Fair Value Hierarchy Levels by Pricing Source, Held-to-Maturity Securities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	$ 45,846	$ 54,841
Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	45,846	54,841
Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	28,708	32,332
Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	17,097	22,445
Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	41	64
Government and Agencies Debt Securities | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	28,708	32,332
Government and Agencies Debt Securities | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	28,708	32,332
Government and Agencies Debt Securities | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Government and Agencies Debt Securities | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Government and Agencies Debt Securities | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	28,708	32,332
Government and Agencies Debt Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	28,708	32,332
Government and Agencies Debt Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Government and Agencies Debt Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Municipalities | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	440	520
Municipalities | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Municipalities | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	440	520
Municipalities | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Municipalities | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	440	464
Municipalities | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Municipalities | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	440	464
Municipalities | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Municipalities | Fixed Maturities | Discounted cash flow valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		56
Municipalities | Fixed Maturities | Discounted cash flow valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Municipalities | Fixed Maturities | Discounted cash flow valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		56
Municipalities | Fixed Maturities | Discounted cash flow valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Mortgage- and asset-backed Securities | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	61	94
Mortgage- and asset-backed Securities | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Mortgage- and asset-backed Securities | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	20	30
Mortgage- and asset-backed Securities | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	41	64
Mortgage- and asset-backed Securities | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	20	30
Mortgage- and asset-backed Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Mortgage- and asset-backed Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	20	30
Mortgage- and asset-backed Securities | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Mortgage- and asset-backed Securities | Fixed Maturities | Consensus pricing valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	41	64
Mortgage- and asset-backed Securities | Fixed Maturities | Consensus pricing valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Mortgage- and asset-backed Securities | Fixed Maturities | Consensus pricing valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Mortgage- and asset-backed Securities | Fixed Maturities | Consensus pricing valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	41	64
Public Utilities | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,928	5,051
Public Utilities | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Public Utilities | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,928	5,051
Public Utilities | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Public Utilities | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,928	58
Public Utilities | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Public Utilities | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,928	58
Public Utilities | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Public Utilities | Fixed Maturities | Discounted cash flow valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		4,993
Public Utilities | Fixed Maturities | Discounted cash flow valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Public Utilities | Fixed Maturities | Discounted cash flow valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		4,993
Public Utilities | Fixed Maturities | Discounted cash flow valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Sovereign and Supranational | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,040	3,317
Sovereign and Supranational | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Sovereign and Supranational | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,040	3,317
Sovereign and Supranational | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Sovereign and Supranational | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,040	370
Sovereign and Supranational | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Sovereign and Supranational | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,040	370
Sovereign and Supranational | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Sovereign and Supranational | Fixed Maturities | Discounted cash flow valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		2,947
Sovereign and Supranational | Fixed Maturities | Discounted cash flow valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Sovereign and Supranational | Fixed Maturities | Discounted cash flow valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		2,947
Sovereign and Supranational | Fixed Maturities | Discounted cash flow valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Banks/financial Institutions | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	6,128	8,991
Banks/financial Institutions | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Banks/financial Institutions | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	6,128	8,991
Banks/financial Institutions | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Banks/financial Institutions | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	6,128	254
Banks/financial Institutions | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Banks/financial Institutions | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	6,128	254
Banks/financial Institutions | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Banks/financial Institutions | Fixed Maturities | Discounted cash flow valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		8,737
Banks/financial Institutions | Fixed Maturities | Discounted cash flow valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Banks/financial Institutions | Fixed Maturities | Discounted cash flow valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		8,737
Banks/financial Institutions | Fixed Maturities | Discounted cash flow valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Other Corporate | Fixed Maturities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,541	4,536
Other Corporate | Fixed Maturities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Other Corporate | Fixed Maturities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,541	4,536
Other Corporate | Fixed Maturities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Other Corporate | Fixed Maturities | Third party pricing vendor valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,509	122
Other Corporate | Fixed Maturities | Third party pricing vendor valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Other Corporate | Fixed Maturities | Third party pricing vendor valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	3,509	122
Other Corporate | Fixed Maturities | Third party pricing vendor valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value	0	0
Other Corporate | Fixed Maturities | Discounted cash flow valuation technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		4,414
Other Corporate | Fixed Maturities | Discounted cash flow valuation technique | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		0
Other Corporate | Fixed Maturities | Discounted cash flow valuation technique | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		4,414
Other Corporate | Fixed Maturities | Discounted cash flow valuation technique | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items}
Securities held to maturity, fixed maturities, fair value		$ 0