INVESTMENTS INVESTMENTS (DERIVATIVES OFFSETING FINANCIAL ASSETS) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,	$ 673	$ 79
Reverse Repurchase agreements [Abstract]
Securities sold under agreements to repurchase	2,488	1,890
Fair Value Assets Derivatives	(15,738)	(12,055)
Accrued interest derivatives	137	141
Investment Management
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	66	13
Equity Contract
Offsetting Assets [Line Items]
Gross amount recognized	839	673
Gross amounts offset in the balance sheets	839	673
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	1,312	1,049
Gross amounts offset in the balance sheets	839	673
Net amounts presented in the balance sheets	473	376
Interest Rate Contract
Offsetting Assets [Line Items]
Gross amount recognized	27	104
Gross amounts offset in the balance sheets	27	104
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	1,077	389
Gross amounts offset in the balance sheets	27	104
Net amounts presented in the balance sheets	1,050	285
Credit Default Swaps
Offsetting Assets [Line Items]
Gross amount recognized	26	37
Gross amounts offset in the balance sheets	26	37
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	16	14
Gross amounts offset in the balance sheets	26	37
Net amounts presented in the balance sheets	(10)	(23)
Reverse Repurchase agreements [Abstract]
Fair Value Assets Derivatives	(17)	(16)
Currency Swap [Member]
Offsetting Assets [Line Items]
Gross amount recognized	7
Gross amounts offset in the balance sheets	7
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0
Gross amounts recognized	0
Gross amounts offset in the balance sheets	7
Net amounts presented in the balance sheets	(7)
Derivatives Subject to an ISDA Master Agreements
Offsetting Assets [Line Items]
Gross amount recognized	899	814
Gross amounts offset in the balance sheets	899	814
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	2,405	1,452
Gross amounts offset in the balance sheets	899	814
Net amounts presented in the balance sheets	1,506	638
Derivatives not subject to an ISDA Master Agreements
Offsetting Assets [Line Items]
Gross amount recognized	0	0
Gross amounts offset in the balance sheets	0	0
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	13	20
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	13	20
Total Derivatives
Offsetting Assets [Line Items]
Gross amount recognized	899	814
Gross amounts offset in the balance sheets	899	814
Net Amounts Of Liabilities Presented In Statement Of Financial Position	0	0
Gross amounts recognized	2,418	1,472
Gross amounts offset in the balance sheets	899	814
Net amounts presented in the balance sheets	1,519	658
Other Financial Instruments
Offsetting Assets [Line Items]
Gross amounts recognized	1,116	1,271
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	1,116	1,271
Other Invested Assets
Offsetting Assets [Line Items]
Gross amounts recognized	3,534	2,743
Gross amounts offset in the balance sheets	899	814
Net amounts presented in the balance sheets	2,635	1,929
Securities purchased under agreement to resell
Offsetting Assets [Line Items]
Securities purchased under agreement to resell, gross amount recognized	673	79
Securities purchased under agreement to resell, gross amount offset in the Balance Sheets	0	0
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,	673	79
Other Financial Liabilities
Offsetting Assets [Line Items]
Gross amount recognized	3,574	2,586
Gross amounts offset in the balance sheets	0	0
Net Amounts Of Liabilities Presented In Statement Of Financial Position	3,574	2,586
Securities sold under agreement to repurchase
Reverse 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
Securities sold under agreements to repurchase	2,485	1,890
Exchange Traded Options | Investment Management | Long
Reverse Repurchase agreements [Abstract]
Fair Value Assets Derivatives	(8)	(6)
Securities Borrowed | Investment Management
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	34	75
Initial Margin
Reverse Repurchase agreements [Abstract]
Fair Value Assets Derivatives	$ (92)	$ 2