INVESTMENTS (DERIVATIVES OFFSETING FINANCIAL ASSETS) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Fair Value Assets Derivatives	$ 15,274	$ 12,055
Accrued interest derivatives	129	141
Reverse Repurchase agreements [Abstract]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,	0	79
Investment Management
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	11	13
Equity Contract
Offsetting Assets [Line Items]
Gross amounts recognized	1,661	1,049
Gross amounts offset in the balance sheets	1,022	673
Net amounts presented in the balance sheets	639	376
Interest Rate Contract
Offsetting Assets [Line Items]
Gross amounts recognized	467	389
Gross amounts offset in the balance sheets	270	104
Net amounts presented in the balance sheets	197	285
Credit Default Swaps
Offsetting Assets [Line Items]
Gross amounts recognized	18	14
Gross amounts offset in the balance sheets	19	37
Net amounts presented in the balance sheets	(1)	(23)
Fair Value Assets Derivatives	19	16
Currency Swap
Offsetting Assets [Line Items]
Gross amounts recognized	1
Gross amounts offset in the balance sheets	11
Net amounts presented in the balance sheets	(10)
Fair Value Assets Derivatives	4
Derivatives Subject to an ISDA Master Agreements
Offsetting Assets [Line Items]
Gross amounts recognized	2,147	1,452
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	825	638
Derivatives not subject to an ISDA Master Agreements
Offsetting Assets [Line Items]
Gross amounts recognized	8	20
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	8	20
Total Derivatives
Offsetting Assets [Line Items]
Gross amounts recognized	2,155	1,472
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	833	658
Other Financial Instruments
Offsetting Assets [Line Items]
Gross amounts recognized	1,242	1,271
Gross amounts offset in the balance sheets	0	0
Net amounts presented in the balance sheets	1,242	1,271
Other Invested Assets
Offsetting Assets [Line Items]
Gross amounts recognized	3,397	2,743
Gross amounts offset in the balance sheets	1,322	814
Net amounts presented in the balance sheets	2,075	1,929
Securities purchased under agreement to resell
Reverse Repurchase agreements [Abstract]
Securities purchased under agreement to resell, gross amount recognized	0	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,	0	79
Exchange Traded Options | Investment Management | Long
Offsetting Assets [Line Items]
Fair Value Assets Derivatives	4	6
Securities Borrowed | Investment Management
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	$ 43	75
Initial Margin
Offsetting Assets [Line Items]
Fair Value Assets Derivatives		$ (2)