STOCK-BASED COMPENSATION Valuation Assumptions (Details) (USD $)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	32.20%	41.80%	45.30%
Risk-free interest rate	0.90%	0.60%	1.00%
Expected dividends	0.90%	1.20%	0.60%
Expected life (in years)	4 years 73 days	4 years 110 days	4 years
Weighted-average grant date fair value	$ 11.15	$ 10.31	$ 12.06
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility	26.50%	32.40%	37.30%
Risk-free interest rate	0.10%	0.10%	0.10%
Expected dividends	0.90%	1.00%	0.60%
Expected life (in years)	183 days	183 days	183 days
Weighted-average grant date fair value	$ 9.62	$ 9.00	$ 8.69