DERIVATIVE INSTRUMENTS - Offsetting of Financial Assets and Derivative Assets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	$ 488		$ 345
Gross amount of liabilities offset in balance sheet	0		0
Net amount of derivative assets presented in balance sheet	488		345
Financial instruments, amount not offset against derivative assets in balance sheet	0		0
Derivative, collateral, obligation to return cash	(295)	[1]	0
Derivative asset, fair value, amount offset against collateral	193		345
Interest rate swaps
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	1		32
Gross amount of liabilities offset in balance sheet	0		0
Net amount of derivative assets presented in balance sheet	1		32
Financial instruments, amount not offset against derivative assets in balance sheet	0		0
Derivative, collateral, obligation to return cash	0		0
Derivative asset, fair value, amount offset against collateral	1		32
Foreign currency swaps
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	445		311
Gross amount of liabilities offset in balance sheet	0		0
Net amount of derivative assets presented in balance sheet	445		311
Financial instruments, amount not offset against derivative assets in balance sheet	0		0
Derivative, collateral, obligation to return cash	(276)		0
Derivative asset, fair value, amount offset against collateral	169		311
Foreign currency forwards
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	17
Gross amount of liabilities offset in balance sheet	0
Net amount of derivative assets presented in balance sheet	17
Financial instruments, amount not offset against derivative assets in balance sheet	0
Derivative, collateral, obligation to return cash	(16)
Derivative asset, fair value, amount offset against collateral	1
Foreign currency options
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	4
Gross amount of liabilities offset in balance sheet	0
Net amount of derivative assets presented in balance sheet	4
Financial instruments, amount not offset against derivative assets in balance sheet	0
Derivative, collateral, obligation to return cash	(3)
Derivative asset, fair value, amount offset against collateral	1
Credit default swaps
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	1		2
Gross amount of liabilities offset in balance sheet	0		0
Net amount of derivative assets presented in balance sheet	1		2
Financial instruments, amount not offset against derivative assets in balance sheet	0		0
Derivative, collateral, obligation to return cash	0		0
Derivative asset, fair value, amount offset against collateral	1		2
Interest rate swaptions
Offsetting Assets [Line Items]
Asset Derivatives Fair Value	20
Gross amount of liabilities offset in balance sheet	0
Net amount of derivative assets presented in balance sheet	20
Financial instruments, amount not offset against derivative assets in balance sheet	0
Derivative, collateral, obligation to return cash	0
Derivative asset, fair value, amount offset against collateral	20
Offsetting assets
Offsetting Assets [Line Items]
Gross amounts of recognized financial instruments	6,144		6,467
Gross amounts offset in balance sheet	0		0
Net amounts of financial instruments presented in balance sheet	6,144		6,467
Carrying value of financial instruments not offset in balance sheet	0		0
Collateral not offset in balance sheet	(5,951)		(6,122)
Financial instruments, amount offset against collateral	193		345
Offsetting assets | Securities lending and similar arrangements
Offsetting Assets [Line Items]
Gross amounts of recognized financial instruments	5,656		6,122
Gross amounts offset in balance sheet	0		0
Net amounts of financial instruments presented in balance sheet	5,656		6,122
Carrying value of financial instruments not offset in balance sheet	0		0
Collateral not offset in balance sheet	(5,656)		(6,122)
Financial instruments, amount offset against collateral	$ 0		$ 0

[1] Consists entirely of cash.