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Share-Based Compensation (Tables)
 12 Months Ended
Mar. 31, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Components of Share-Based Compensation Expense and Related Tax Benefits
The components of share-based compensation expense and related tax benefits were as follows:
Years Ended March 31,
(In millions)202520242023
Restricted stock unit awards (1)
$211 $168 $149 
Employee stock purchase plan15 14 13 
Share-based compensation expense 226 182 162 
Tax benefit for share-based compensation expense
(85)(72)(87)
Share-based compensation expense, net of tax$141 $110 $75 
(1)Includes share-based compensation expense recognized for RSUs and PSUs.
Schedule of Assumptions Used to Estimate Fair Value of PSUs
The weighted-average assumptions used in the Monte Carlo valuations were as follows:
Years Ended March 31,
202520242023
Expected stock price volatility21 %24 %34 %
Expected dividend yield
0.5 %0.6 %0.6 %
Risk-free interest rate4.5 %3.9 %2.7 %
Expected life (in years)
333
Summary of Restricted Stock Unit Award Activity
The following table summarizes activity for RSUs and PSUs during fiscal 2025:
(In millions, except per share data)SharesWeighted-
Average
Grant Date Fair
Value Per Share
Nonvested, March 31, 2024
1.4 $307.73 
Granted0.4 559.18 
Cancelled(0.1)419.14 
Vested(0.8)254.53 
Nonvested, March 31, 2025
0.9 $434.89 
Schedule of Data Related to Restricted Stock Unit Award Activity
The following table provides data related to RSU and PSU award activity:
Years Ended March 31,
(In millions)202520242023
Total fair value of shares vested$192 $143 $200 
Total compensation cost, net of estimated forfeitures, related to nonvested restricted stock unit awards not yet recognized, pre-tax
$191 $205 $192 
Weighted-average period in years over which restricted stock unit award cost is expected to be recognized
122