DERIVATIVE INSTRUMENTS - Offsetting of Financial Liabilities and Derivative Liabilities (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Offsetting Liabilities [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 8		$ 0
Gross amount of recognized derivative liabilities	(837)		(934)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(837)		(934)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative Collateral Right To Reclaim Securities and Cash	8	[1]	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(829)		(934)
Foreign currency swaps
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(218)		(329)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(218)		(329)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Cash	1		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(217)		(329)
Foreign currency forwards
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(582)		(535)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(582)		(535)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Cash	0		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(582)		(535)
Foreign currency options
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(1)
Gross amount of assets offset in balance sheet	0
Net amount of derivative liabilities presented in balance sheet	(1)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0
Derivative, Collateral, Right to Reclaim Cash	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(1)
Credit default swaps
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(4)		(67)
Gross amount of assets offset in balance sheet	0		0
Net amount of derivative liabilities presented in balance sheet	(4)		(67)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0		0
Derivative, Collateral, Right to Reclaim Cash	0		0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(4)		(67)
Interest rate swaptions
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities	(32)
Gross amount of assets offset in balance sheet	0
Net amount of derivative liabilities presented in balance sheet	(32)
Financial instruments, amount not offset against derivative liabilities in balance sheet	0
Derivative Liability, Fair Value, Amount Offset Against Collateral	(25)
Interest rate swaps
Offsetting Liabilities [Line Items]
Gross amount of recognized derivative liabilities			(3)
Gross amount of assets offset in balance sheet			0
Net amount of derivative liabilities presented in balance sheet			(3)
Financial instruments, amount not offset against derivative liabilities in balance sheet			0
Derivative, Collateral, Right to Reclaim Cash			0
Derivative Liability, Fair Value, Amount Offset Against Collateral			(3)
Offsetting liabilities
Offsetting Liabilities [Line Items]
Gross amounts of recognized financial instruments	(6,657)		(7,211)
Gross amounts offset in balance sheet	0		0
Net amounts of financial instruments presented in balance sheet	(6,657)		(7,211)
Carrying value of financial instruments not offset in balance sheet	5,656		6,122
Collateral not offset in balance sheet	8		0
Financial instruments, amount offset against collateral	(993)		(1,089)
Offsetting liabilities | Securities lending and similar arrangements
Offsetting Liabilities [Line Items]
Gross amounts of recognized financial instruments	(5,820)		(6,277)
Gross amounts offset in balance sheet	0		0
Net amounts of financial instruments presented in balance sheet	(5,820)		(6,277)
Carrying value of financial instruments not offset in balance sheet	5,656		6,122
Collateral not offset in balance sheet	0		0
Financial instruments, amount offset against collateral	(164)		(155)
Japanese Government Bonds
Offsetting Liabilities [Line Items]
Collateral Already Posted, Aggregate Fair Value	7
Cash
Offsetting Liabilities [Line Items]
Collateral Already Posted, Aggregate Fair Value	$ 1

[1] Consists of $7 of pledged JGBs and $1 of cash.