DERIVATIVE INSTRUMENTS - Offsetting of Financial Liabilities and Derivative Liabilities (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	$ (1,242)		$ (837)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(1,242)		(837)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	726	[1]	8	[2]
Derivative Liability, Fair Value, Amount Offset Against Collateral	(516)		(829)
Derivative, Collateral, Right to Reclaim Securities	725		7
Derivative, Collateral, Right to Reclaim Cash	1		1
Foreign currency swaps
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(189)		(218)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(189)		(218)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	1		1
Derivative Liability, Fair Value, Amount Offset Against Collateral	(188)		(217)
Foreign currency forwards
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(979)		(582)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(979)		(582)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	664		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(315)		(582)
Foreign currency options
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(8)		(1)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(8)		(1)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	4		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(4)		(1)
Credit default swaps
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(1)		(4)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(1)		(4)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	0		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(1)		(4)
Interest rate swaptions
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(65)		(32)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(65)		(32)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Securities and Cash	57		7
Derivative Liability, Fair Value, Amount Offset Against Collateral	(8)		(25)
Offsetting liabilities
Offsetting Liabilities [Line Items]
Gross amounts of recognized financial instruments	(8,267)		(6,657)
Gross amounts offset in balance sheet	0		0
Net amounts of liabilities presented in balance sheet	(8,267)		(6,657)
Carrying value of financial instruments not offset in balance sheet	6,873		5,656
Collateral not offset in balance sheet	726		8
Financial instruments, amount offset against collateral	(668)		(993)
Offsetting liabilities | Securities lending and similar arrangements
Offsetting Liabilities [Line Items]
Gross amounts of recognized financial instruments	(7,025)		(5,820)
Gross amounts offset in balance sheet	0		0
Net amounts of liabilities presented in balance sheet	(7,025)		(5,820)
Carrying value of financial instruments not offset in balance sheet	6,873		5,656
Collateral not offset in balance sheet	0		0
Financial instruments, amount offset against collateral	$ (152)		$ (164)

[1] Consists of $725 of pledged securities and $1 of cash.

[2] Consists of $7 of pledged securities and $1 of cash.