Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Details 3)

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INVESTMENTS (Details 3) - USD ($)
$ in Millions
Dec. 31, 2018
Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost $ 685  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value 682  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost 3,871  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value 3,948  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost 106  
Available-for-sale securities, after 5 years through 10 years, fair value 122  
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost 239  
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value 241  
Available-for-sale Securities, Amortized Cost Basis 4,901  
Trading Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 44 $ 12
Available-for-Sale Securities    
Debt Securities, Available-for-sale [Line Items]    
Solvency Funds of Insurance Captive 1,056 1,159
Debt Securities 4,993 5,912
Cash and cash equivalents | Trading Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 0 0
Cash and cash equivalents | Available-for-Sale Securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 0 667
Marketable Securities [Member] | Trading Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 44 12
Marketable Securities [Member] | Available-for-Sale Securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 4,691 4,970
Other assets | Trading Securities [Member]    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities 0 0
Other assets | Available-for-Sale Securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities $ 302 $ 275