STOCKHOLDERS' EQUITY (Retained Earnings) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Dividends declared (in dollars per share)	$ 0.46	$ 0.46	$ 0.46	$ 1.38	$ 1.84
Undistributed Earnings of Nonconsolidated Affiliates				$ 1,731		$ 1,760