COMMON STOCK REPURCHASES (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Equity [Abstract]
Remaining shares authorized for repurchase under program	218,935
Shares repurchased	8,492,117	419,041
Total cost of shares repurchased	$ 473,220	$ 18,917
Average cost per share of shares repurchased	$ 55.72	$ 45.14
Value of shares withheld in satisfaction of employee tax withholding obligations	$ 10,499	$ 6,235