SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - 2015 1 Billion Repurchase Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended		31 Months Ended	34 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Jun. 30, 2018	Aug. 31, 2015
Class of Stock [Line Items]
Stock repurchase program, authorized amount							$ 1,000
Stock repurchased during period (shares)						5,483,102
Value of stock repurchased during period					$ 413
Shares	204,078	256,680	389,739	256,680
Amount	$ 13	$ 22	$ 25	$ 22