INVESTMENTS (DERIVATIVES OFFSETING FINANCIAL LIABILITES ) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting Liabilities [Line Items]
Fair Value Liabilities Derivatives	$ 2,280	$ 1,320
Expense accrual	3
Repurchase agreements [Abstract]
Repurchase agreements, net amount presented on the Balance Sheet	2,145	1,890
Investment Management
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash		(2)
Fair Value Liabilities Derivatives	11	12
Equity Contract
Offsetting Liabilities [Line Items]
Gross amount recognized	1,022	673
Gross amounts offset in the balance sheets	1,022	673
Net amounts presented in the balance sheets	0	0
Interest Rate Contract
Offsetting Liabilities [Line Items]
Gross amount recognized	270	104
Gross amounts offset in the balance sheets	270	104
Net amounts presented in the balance sheets	0	0
Credit Default Swaps
Offsetting Liabilities [Line Items]
Gross amount recognized	19	37
Gross amounts offset in the balance sheets	19	37
Net amounts presented in the balance sheets	0	0
Fair Value Liabilities Derivatives	19	38
Currency Swap
Offsetting Liabilities [Line Items]
Gross amount recognized	11
Gross amounts offset in the balance sheets	11
Net amounts presented in the balance sheets	0
Fair Value Liabilities Derivatives	15
Derivatives Subject to an ISDA Master Agreements
Offsetting Liabilities [Line Items]
Gross amount recognized	1,322	814
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	0	0
Derivatives not subject to an ISDA Master Agreements
Offsetting Liabilities [Line Items]
Gross amount recognized	0	0
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	0	0
Total Derivatives
Offsetting Liabilities [Line Items]
Gross amount recognized	1,322	814
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	0	0
Other Financial Liabilities
Offsetting Liabilities [Line Items]
Gross amount recognized	2,919	2,586
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	2,919	2,586
Other Liabilities
Offsetting Liabilities [Line Items]
Gross amount recognized	4,241	3,400
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	2,919	2,586
Securities sold under agreement to repurchase
Repurchase agreements [Abstract]
Securities sold under agreements to repurchase, gross amount recognized	2,142	1,890
Securities sold under agreement to repurchase, gross amount offset in the Balance Sheets	0	0
Repurchase agreements, net amount presented on the Balance Sheet	2,142	1,890
Exchange Traded Options | Investment Management | Short
Offsetting Liabilities [Line Items]
Fair Value Liabilities Derivatives	4	1
Securities Loaned | Investment Management
Offsetting Liabilities [Line Items]
Net amounts presented in the balance sheets	5	10
Securities sold under agreement to repurchase
Repurchase agreements [Abstract]
Repurchase agreements, net amount presented on the Balance Sheet	2,142	1,890
Other Financial Instruments
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash	0	0
Total Derivatives
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash	(765)	(605)
Other
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash	$ (765)	$ (605)