SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - 2015 1 Billion Repurchase Program [Member] - USD ($) $ in Millions	3 Months Ended		31 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Aug. 31, 2015
Class of Stock [Line Items]
Stock repurchase program, authorized amount				$ 1,000
Stock repurchased during period (shares)			5,279,024
Value of stock repurchased during period			$ 401
Shares	185,661	0
Amount	$ 12	$ 0