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Stock-Based Compensation (Tables)
9 Months Ended
Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Fair Value of Each Stock Option Granted Using Monte Carlo Simulation Model
The fair value of each stock option and market-based RSU granted under the above plans was estimated on the date of grant using either a Black-Scholes option pricing model (service-based awards) or a Monte Carlo simulation model (market-based awards) with the following average assumptions:
 
Stock Options
 
RSUs
 
Nine Months Ended December 31,
 
Nine Months Ended December 31,
 
2015
 
2014
 
2015
 
2014
Risk-free interest rate
1.92
%
 
1.45
%
 
1.29
%
 
1.17
%
Volatility
36.53
%
 
48.31
%
 
36.86
%
 
38.72
%
Dividend yield
2.58
%
 
2.33
%
 
2.60
%
 
2.38
%
Expected life of option (in years)
4.65

 
4.79