EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jun. 01, 2016
EQUITY
Common stock, authorized shares	200,000,000	200,000,000	200,000,000
Preferred stock, authorized shares	20,000,000	20,000,000	20,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, outstanding shares	0	0
Common stock issuances
Balance at the beginning of the year	38,818,048	38,564,000
Issued	3,725,000	254,000
Balance at the end of the year	42,542,637	38,818,048
ACCUMULATED OTHER COMPREHENSIVE INCOME / (LOSS)
Pension and post-retirement adjustments	$ (14)	$ (15)