SUBSEQUENT EVENTS (Details) - USD ($) $ / shares in Units, $ in Billions		12 Months Ended
	Feb. 11, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 16, 2015
Subsequent Event [Line Items]
Dividends declared per common share		$ 0.81	$ 0.5	$ 0.2
Aggregate remaining authorization amount of common Stock share repurchase		$ 3.3			$ 4.1
Subsequent event
Subsequent Event [Line Items]
Dividends declared per common share	$ 0.32
Authorized amount of common Stock share repurchase	$ 5.0
Aggregate remaining authorization amount of common Stock share repurchase	$ 5.8
Date Dividends Declared		Feb. 11, 2016
Date Dividends To Be Paid		Mar. 28, 2016
Date of Shareholders of Record		Mar. 14, 2016