STOCK-BASED COMPENSATION Valuation Assumptions (Details) (USD $)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	28.40%	32.20%	41.80%
Risk-free interest rate	1.40%	0.90%	0.60%
Expected dividends	1.30%	0.90%	1.20%
Expected life (in years)	4 years 73 days	4 years 73 days	4 years 110 days
Weighted-average grant date fair value	$ 10.33	$ 11.15	$ 10.31
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	25.50%	26.50%	32.40%
Risk-free interest rate	0.10%	0.10%	0.10%
Expected dividends	1.20%	0.90%	1.00%
Expected life (in years)	183 days	183 days	183 days
Weighted-average grant date fair value	$ 10.57	$ 9.62	$ 9.00