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Shareholder's Equity/Member's Deficit (Details) - $ / shares
3 Months Ended
Jul. 31, 2019
Sep. 30, 2019
Aug. 01, 2019
Mar. 31, 2019
Mar. 31, 2018
Class of Stock [Line Items]          
Common share, authorized (in shares)   600,000,000      
Par value (in USD per share)   $ 0.001      
Common units, outstanding (in units)       100 100
Common units, issued during the exchange (in shares)   241,018,831      
Common shares, issued (in shares)   280,509,056      
Common shares, outstanding (in shares)   280,509,056      
Dynatrace Holdings LLC          
Class of Stock [Line Items]          
Common units, outstanding (in units) 241,547,218   241,547,118    
Common units, issued (in shares) 19,525,510 241,018,731      
Common units, issued during the exchange (in shares)     241,547,218    
Management Incentive Units and Appreciation Units          
Class of Stock [Line Items]          
Common units, issued (in shares) 16,687,436 14,804,226