STOCKHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended		180 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Sep. 30, 2016	Aug. 18, 2016
STOCKHOLDERS' EQUITY [Abstract]
Authorized number of shares under stock repurchase program (in shares)				500,000
Common stock repurchased during the period (in shares)	328,481		6,000,000
Average cost of share repurchased (in dollars per share)	$ 81.62		$ 24.44
Common stock repurchased during the period	$ 26.8		$ 147.3
Shares repurchased to satisfy tax withholding obligation (in shares)	29,736	30,447
Value of Shares repurchased to satisfy tax withholding obligation	$ 2.6	$ 2.5