Share Based Awards (Details 1)	6 Months Ended
	Sep. 30, 2012 Y	Sep. 30, 2011 Y
Schedule of Share Based Compensation Valuation Assumption
Expected life (in years)	5.0	4.3
Expected volatility		41.20%
Expected Dividends		1.60%
Risk-free rate		1.80%
Minimum [Member]
Schedule of Share Based Compensation Valuation Assumption
Expected volatility	41.30%
Expected Dividends	2.40%
Risk-free rate	0.70%
Maximum [Member]
Schedule of Share Based Compensation Valuation Assumption
Expected volatility	45.00%
Expected Dividends	3.80%
Risk-free rate	0.80%