STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	9 Months Ended	12 Months Ended
	Apr. 30, 2009	Dec. 31, 2009	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Class of Stock [Line Items]
Shares of common stock for each share of preferred stock			24.2010
Convertible Preferred Stock Term of Conversion Share Price			$ 53.72
Undistributed earnings of nonconsolidated affiliates			$ 2,708	$ 2,703
Employee Stock Ownership Plan (ESOP), Debt Structure, Direct Loan, Amount			30	$ 37
Common Stock [Member]
Class of Stock [Line Items]
Common shares issued under ESPP				21,200,000	18,300,000
Series A [Member]
Class of Stock [Line Items]
Preferred stock dividend rate		8.50%
Rate which will be paid on past due preferred stock		10.00%
Ongoing dividends			$ 85
Berkshire Hathaway [Member] | Series A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	3,000,000
Value of shares issued	$ 3,000
Kuwait Investment Authority [Member] | Series A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	1,000,000
Value of shares issued	$ 1,000
Employee [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common shares issued under ESPP			0
Non-Employee Directors [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common shares issued under ESPP			31,560