INVESTMENTS (AVAILABLE-FOR-SALE SECURITIES) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]      
Fair Value $ 1,109 $ 906  
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]      
Due in one year or less, Amortized Cost 20    
Due in years two through five, Amortized Cost 179    
Due in years six through ten, Amortized Cost 845    
Due after ten years, Amortized Cost 22    
Subtotal 1,066    
Debt Maturities, Amortized Cost Basis 1,099    
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]      
Due in one year or less, Fair Value 20    
Due in years two through five, Fair Value 187    
Due in years six through ten, Fair Value 847    
Due after ten years, Fair Value 22    
Subtotal 1,076    
Available For Sale Securities, Debt Maturities, Fair Value 1,109    
Available For Sale Fixed Maturities Proceeds Gross Gains And Gross Losses From Sales And Other Than Temporary Impairments [Abstract]      
Proceeds from sales 49 19 $ 39
Gross gains on sales 1 0 1
Gross losses on sales 0 0 1
Total other-than-temporary impairment losses (3) (1) (10)
Portion of loss recognized in other comprehensive income (loss) 0 0 0
Credit losses recognized in earnings (loss) (3) (1) (10)
Fixed Maturities - Credit Loss Impairments      
Balance at January 1, (42) (51)  
Previously recognized impairments on securities that matured, paid, prepaid or sold 13 10  
Recognized impairments on securities impaired to fair value this period 0 0  
Impairments recognized this period on securities not previously impaired (3) 0  
Additional impairments this period on securities previously impaired 0 (1)  
Increases due to passage of time on previously recorded credit losses 0 0  
Accretion of previously recognized impairments due to increases in expected cash flows 0 0  
Balances at December 31, (32) (42) $ (51)
Public Corporate      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 819 631  
Gross Unrealized Gains 16 16  
Gross Unrealized Losses 8 10  
Fair Value 827 637  
Private Corporate      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 205 183  
Gross Unrealized Gains 5 4  
Gross Unrealized Losses 2 2  
Fair Value 208 185  
US Treasury Government And Agency      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 36 29  
Gross Unrealized Losses 1    
Fair Value 35 29  
State and Political Sub-divisions      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 6 6  
Gross Unrealized Gains 0 1  
Fair Value 6 7  
Commercial Mortgage-backed      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 24 32  
Gross Unrealized Gains 7 6  
Gross Unrealized Losses 7 7  
Fair Value 24 31  
OTTI in AOCI 1 1  
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]      
AFS without a single maturity date, amortized cost 24    
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]      
AFS without a single maturity date, Fair Value 24    
Redeemable preferred stock      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 9 17  
Gross Unrealized Gains   0  
Gross Unrealized Losses 0 0  
Fair Value 9 17  
Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract]      
AFS without a single maturity date, amortized cost 9    
Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract]      
AFS without a single maturity date, Fair Value 9    
Fixed Maturities      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 1,099 898  
Gross Unrealized Gains 28 27  
Gross Unrealized Losses 18 19  
Fair Value 1,109 906  
OTTI in AOCI $ 1 $ 1