INVESTMENTS (DERIVATIVES OFFSETING FINANCIAL LIABILITES ) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Repurchase agreements [Abstract]
Repurchase agreements, net amount presented on the Balance Sheet	$ 2,488	$ 1,890
Fair Value Liabilities Derivatives	1,648	1,320
Investment Management
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash		(2)
Repurchase agreements [Abstract]
Fair Value Liabilities Derivatives	73	12
Equity Contract
Offsetting Liabilities [Line Items]
Gross amount recognized	839	673
Gross amounts offset in the balance sheets	839	673
Net amounts presented in the balance sheets	0	0
Interest Rate Contract
Offsetting Liabilities [Line Items]
Gross amount recognized	27	104
Gross amounts offset in the balance sheets	27	104
Net amounts presented in the balance sheets	0	0
Credit Default Swaps
Offsetting Liabilities [Line Items]
Gross amount recognized	26	37
Gross amounts offset in the balance sheets	26	37
Net amounts presented in the balance sheets	0	0
Repurchase agreements [Abstract]
Fair Value Liabilities Derivatives	26	38
Derivatives Subject to an ISDA Master Agreements
Offsetting Liabilities [Line Items]
Gross amount recognized	899	814
Gross amounts offset in the balance sheets	899	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	899	814
Gross amounts offset in the balance sheets	899	814
Net amounts presented in the balance sheets	0	0
Other Financial Liabilities
Offsetting Liabilities [Line Items]
Gross amount recognized	3,574	2,586
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	3,574	2,586
Other Liabilities
Offsetting Liabilities [Line Items]
Gross amount recognized	4,473	3,400
Gross amounts offset in the balance sheets	899	814
Net amounts presented in the balance sheets	3,574	2,586
Securities sold under agreement to repurchase
Repurchase agreements [Abstract]
Securities sold under agreements to repurchase, gross amount recognized	2,485	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	2,485	1,890
Exchange Traded Options | Investment Management | Short
Repurchase agreements [Abstract]
Fair Value Liabilities Derivatives	0	1
Securities Loaned | Investment Management
Offsetting Liabilities [Line Items]
Net amounts presented in the balance sheets	13	10
Counterparty G
Offsetting Liabilities [Line Items]
Derivative, Collateral, Obligation to Return Cash	$ (171)	$ (129)