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Stock-Based Compensation - Long-Term Incentive Plan Awards (Details) - LTIP PSUs - 2015 SIP - $ / shares
12 Months Ended 36 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2023
2022        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years) 3 years      
Number of measurement reporting periods 3 years      
Award requisite service period (in months) 36 months      
Granted (in shares) 34,822      
Granted (in dollars per share) $ 407.37      
2022 | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights percentage 200.00%      
2022 | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Financial performance achievement percentage 100.00%      
2021        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of measurement reporting periods   3 years    
Granted (in shares)   19,890    
Granted (in dollars per share)   $ 376.45    
2021 | Forecast        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights percentage       190.00%
2021 | Share-based Payment Arrangement, Tranche One        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years)   2 years    
Award requisite service period (in months)   24 months    
2021 | Share-based Payment Arrangement, Tranche Two        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years)   3 years    
Award requisite service period (in months)   36 months    
2021 | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights percentage   200.00%    
2021 | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Financial performance achievement percentage   100.00%    
2020        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting period (in years)     3 years  
Award requisite service period (in months)     36 months  
Granted (in shares)     38,174  
Granted (in dollars per share)     $ 146.96  
2020 | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Award vesting rights percentage 200.00%   200.00%  
2020 | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Financial performance achievement percentage     90.00%