SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - 2015 1 Billion Repurchase Program [Member] - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended		25 Months Ended
	Oct. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Aug. 31, 2015
Class of Stock [Line Items]
Stock repurchase program, authorized amount (shares)							$ 1,000
Stock repurchased during period (shares)						4,724,181
Value of stock repurchased during period						$ 363
Shares		355,415	0	612,095	2,594,809
Amount		$ 28	$ 0	$ 50	$ 193
Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchased during period (shares)	369,182
Value of stock repurchased during period	$ 25