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Changes in Capital Structure - Narrative (Details) - $ / shares
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2021
Class of Stock [Line Items]          
Common stock, shares authorized (in shares)       500,000,000 500,000,000
Employee Stock Purchase Plan, minimum percentage of eligible compensation to purchase shares 1.00%        
Employee Stock Purchase Plan, maximum percentage of eligible compensation 10.00%        
Employee Stock Purchase Plan, exercise price as percentage of fair value 95.00%        
Common stock dividends proposed annual amount (in usd per share)     $ 1.20 $ 1.30  
Forecast          
Class of Stock [Line Items]          
Common stock dividends proposed annual amount (in usd per share)   $ 1.40      
Annual dividend rate increase   8.00%