STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Preferred Stock
Preferred stock, authorized (in shares)	100,000,000	100,000,000	100,000,000
Preferred stock, outstanding (in shares)	250,000	250,000	250,000
Preferred stock, par value (in dollars per share)	$ 25.00	$ 25.00	$ 25.00
Treasury Stock
Treasury stock purchased	$ 130	$ 260
Treasury stock purchased (in shares)		7,127,809