INVESTMENTS (AVAILABLE FOR SALE SECURITIES) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 33,486	$ 31,235
Gross Unrealized Gains	3,222	1,432
Gross Unrealized Losses	142	742
Fair Value	36,566	31,925
OTTI in AOCI	10	12
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Due in one year or less, Amortized Cost	1,361
Due in years two through five, Amortized Cost	7,668
Due in years six through ten, Amortized Cost	9,855
Due after ten years, Amortized Cost	12,950
Available for sale securities debt maturities single maturity date, Amortized Cost, Subtotal	31,834
Fixed maturities available for sale, amortized cost	33,400
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Due in one year or less, Fair Value	1,378
Due in years two through five, Fair Value	8,201
Due in years six through ten, Fair Value	10,434
Due after ten years, Fair Value	14,857
Available for sale securities debt maturities single maturity date, Fair Value, Subtotal	34,870
Available-for-sale securities, debt maturities, Fair Value, Total	36,480
Public corporate
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,181	12,890
Gross Unrealized Gains	1,089	688
Gross Unrealized Losses	10	202
Fair Value	14,260	13,376
OTTI in AOCI	0	0
Private corporate
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,945	6,818
Gross Unrealized Gains	410	232
Gross Unrealized Losses	20	124
Fair Value	7,335	6,926
OTTI in AOCI	0	0
U.S. Treasury, government and agency
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10,915	8,800
Gross Unrealized Gains	1,462	280
Gross Unrealized Losses	20	305
Fair Value	12,357	8,775
OTTI in AOCI	0	0
State and Political Sub- divisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	432	437
Gross Unrealized Gains	93	68
Gross Unrealized Losses	1	1
Fair Value	524	504
OTTI in AOCI	0	0
Foreign Govts
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	361	397
Gross Unrealized Gains	41	36
Gross Unrealized Losses	8	18
Fair Value	394	415
OTTI in AOCI	0	0
Commercial Mortgage- backed
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	454	591
Gross Unrealized Gains	24	29
Gross Unrealized Losses	82	87
Fair Value	396	533
OTTI in AOCI	7	9
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Amortized Cost	454
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Fair Value	396
Residential Mortgage- backed
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	519	608
Gross Unrealized Gains	33	32
Gross Unrealized Losses	0	0
Fair Value	552	640
OTTI in AOCI	0	0
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Amortized Cost	519
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Fair Value	552
Asset- backed
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	52	68
Gross Unrealized Gains	10	10
Gross Unrealized Losses	1	1
Fair Value	61	77
OTTI in AOCI	3	3
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Amortized Cost	52
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Fair Value	61
Redeemable Preferred Stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	541	592
Gross Unrealized Gains	60	57
Gross Unrealized Losses	0	2
Fair Value	601	647
OTTI in AOCI	0	0
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Amortized Cost	541
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]
Available-for-sale securities, debt maturities, without single maturity date, Fair Value	601
Fixed Maturities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	33,400	31,201
Gross Unrealized Gains	3,222	1,432
Gross Unrealized Losses	142	740
Fair Value	36,480	31,893
OTTI in AOCI	10	12
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]
Fixed maturities available for sale, amortized cost	33,400	31,201
Equity securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	86	34
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	2
Fair Value	86	32
OTTI in AOCI	$ 0	$ 0