INVESTMENTS (DERIVATIVES GROSS COLLATERAL AMOUNTS ASSETS) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Offsetting Assets [Line Items]
Accrued interest derivatives	$ 129	$ 141
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	15,274	12,055
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
Callateral Cash (Received)		(2)
Securities Borrowed | Investment Management
Offsetting Assets [Line Items]
Derivative Asset, Fair Value, Amount Offset Against Collateral	43	75
Variable Interest Entity, Primary Beneficiary | Investment Management
Offsetting Assets [Line Items]
Callateral Cash (Received)	(1)
Securities sold under agreement to repurchase
Reverse repurchase agreements [Abstract]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,		79
Reverse repurchase agreements, collateral securities received		(79)
Reverse repurchase agreements, collateral cash received		0
Reverse repurchase agreements, net amounts		0
Securities sold under agreement to repurchase | Counterparty M
Reverse repurchase agreements [Abstract]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,		28
Reverse repurchase agreements, collateral securities received		(28)
Reverse repurchase agreements, collateral cash received		0
Reverse repurchase agreements, net amounts		0
Securities sold under agreement to repurchase | Counterparty V
Reverse repurchase agreements [Abstract]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,		51
Reverse repurchase agreements, collateral securities received		(51)
Reverse repurchase agreements, collateral cash received		0
Reverse repurchase agreements, net amounts		0
Other
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	2,075	1,929
Calleteral Securities (Received)	(51)	(11)
Callateral Cash (Received)	(765)	(605)
Derivative Asset, Fair Value, Amount Offset Against Collateral	1,259	1,313
Derivative
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	833	658
Calleteral Securities (Received)	(51)	(11)
Callateral Cash (Received)	(765)	(605)
Derivative Asset, Fair Value, Amount Offset Against Collateral	17	42
Derivative | Counterparty A
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	64	52
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(63)	(52)
Derivative Asset, Fair Value, Amount Offset Against Collateral	1	0
Derivative | Counterparty B
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	(43)	9
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	43	(7)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	2
Derivative | Counterparty C
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	44	61
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(44)	(58)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	3
Derivative | Counterparty D
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	239	222
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(239)	(218)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	4
Derivative | Counterparty E
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	19	53
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(19)	(53)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty F
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	40	(2)
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(40)	2
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty G
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	213	129
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(213)	(129)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty H
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	56	16
Calleteral Securities (Received)	(51)	(11)
Callateral Cash (Received)	0	(5)
Derivative Asset, Fair Value, Amount Offset Against Collateral	5	0
Derivative | Counterparty I
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	(8)	44
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	8	(39)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	5
Derivative | Counterparty J
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	77	19
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(77)	(13)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	6
Derivative | Counterparty K
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	67	17
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(67)	(17)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty L
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	2	7
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(2)	(7)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty M
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	12	11
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(12)	(10)
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	1
Derivative | Counterparty N
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	8	20
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	8	20
Derivative | Counterparty Q
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	6	0
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(6)	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty T
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	(1)	(3)
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	1	3
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	0
Derivative | Counterparty U
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	(16)	0
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	16	1
Derivative Asset, Fair Value, Amount Offset Against Collateral	0	1
Derivative | Counterparty V
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	54	3
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	(51)	(3)
Derivative Asset, Fair Value, Amount Offset Against Collateral	3	0
Other Financial Instruments
Offsetting Assets [Line Items]
Net amounts presented in the balance sheets	1,242	1,271
Calleteral Securities (Received)	0	0
Callateral Cash (Received)	0	0
Derivative Asset, Fair Value, Amount Offset Against Collateral	1,242	$ 1,271
Securities purchased under agreement to resell
Reverse repurchase agreements [Abstract]
Securities purchased under agreements to resell, net amount presented in the Balance Sheet,	0
Reverse repurchase agreements, collateral securities received	0
Reverse repurchase agreements, collateral cash received	0
Reverse repurchase agreements, net amounts	0
Initial Margin
Offsetting Assets [Line Items]
Derivative Asset, Fair Value, Amount Not Offset Against Collateral	$ 41