Annual report pursuant to Section 13 and 15(d)

INVESTMENTS (Details 2)

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INVESTMENTS (Details 2) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Available-for-sale securities, by type    
Equity Securities, FV-NI, Gain (Loss) $ (250)  
Equity Securities, FV-NI 1,934  
Available-for-sale securities, cost 4,901  
Securities Owned Not Readily Marketable 80  
Equity Securities, FV-NI, Realized Gain (Loss) 8  
Equity Securities, FV-NI, Unrealized Gain (258)  
Equity securities, cost   $ 1,600
Equity securities, gross unrealized gain   760
Equity securities, gross unrealized loss   (70)
Equity Securities   2,290
Debt Securities, Trading, and Equity Securities, FV-NI, Cost 4,946 5,794
Debt securities, gross unrealized gain 119 157
Debt securities, gross unrealized loss (28) (27)
Debt Securities, Trading and Available-for-sale 5,037 5,924
Debt Securities [Member]    
Available-for-sale securities, by type    
Debt Securities, Trading, Amortized Cost 45 12
Available-for-sale Securities, Gross Realized Gains 22 7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain 119 157
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, (27) (27)
Available-for-sale securities, estimated fair value 4,993 5,912
Trading Securities, Unrealized Holding Gain 0 0
Trading Securities, Unrealized Holding Loss (1) 0
Trading securities 44 12
Gross realized losses 27 13
Proceeds from Sale of Available-for-sale Securities 13,710 13,930
Debt Securities, Available-for-sale, Amortized Cost 4,901 5,782
Equity securities    
Available-for-sale securities, by type    
Trading Securities, Equity   395
Trading Securities, Equity, Cost   324
Available-for-sale Securities, Gross Realized Gains   61
Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain   685
Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss   (66)
Available-for-sale securities, estimated fair value   1,895
Trading Securities, Unrealized Holding Gain   75
Trading Securities, Unrealized Holding Loss   (4)
Trading securities   395
Available-for-sale Securities, Equity Securities   1,276
Gross realized losses   19
Proceeds from Sale of Available-for-sale Securities   275
Other Investments    
Available-for-sale securities, by type    
Trading Securities, Equity   0
Equity Securities, FV-NI 787  
Available-for-sale securities, estimated fair value   953
Securities Owned Not Readily Marketable 80  
Other assets    
Available-for-sale securities, by type    
Trading Securities, Equity   112
Equity Securities, FV-NI 869  
Available-for-sale securities, estimated fair value   890
Securities Owned Not Readily Marketable 0  
Marketable Securities [Member]    
Available-for-sale securities, by type    
Trading Securities, Equity   283
Equity Securities, FV-NI 278  
Available-for-sale securities, estimated fair value   $ 52
Securities Owned Not Readily Marketable $ 0