SHAREHOLDERS' EQUITY, COMMON STOCK REPURCHASE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Aug. 31, 2015	May. 31, 2014	Sep. 30, 2012
Class of Stock [Line Items]
Stock repurchased during period (shares)	1,588,251	3,443,991	5,649,805	5,258,027
Stock repurchased during period	$ 119	$ 159	$ 381	$ 242
September 2012 Stock Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount (shares)							$ 250
Stock repurchased during period (shares)	0	5,268	0	1,819,304
Stock repurchased during period	$ 0	$ 0	$ 0	$ 83
May 2014 Stock Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount (shares)						$ 650
Stock repurchased during period (shares)	1,588,251	3,438,723	5,649,805	3,438,723
Stock repurchased during period	$ 119	$ 159	$ 381	$ 159
1 billion dollar Repurchase Program [Member]
Class of Stock [Line Items]
Stock repurchase program, authorized amount (shares)					$ 1,000