Annual report pursuant to Section 13 and 15(d)

Goodwill - Schedule of goodwill (Details)

v3.21.2
Goodwill - Schedule of goodwill (Details) - USD ($)
 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Goodwill [Roll Forward]      
Balance at the beginning of the period $ 593,129,000 $ 584,469,000  
Acquisitions 1,179,943,000 7,652,000  
Disposal of Q2 Administrators, LLC   (899,000)  
Foreign currency translation 1,334,000 1,907,000  
Balance at the end of the period 1,774,406,000 593,129,000 $ 584,469,000
Goodwill, impairment loss 0 0 0
U.S. Services      
Goodwill [Roll Forward]      
Balance at the beginning of the period 164,472,000 164,472,000  
Acquisitions 0 0  
Disposal of Q2 Administrators, LLC   0  
Foreign currency translation 0 0  
Balance at the end of the period 164,472,000 164,472,000 164,472,000
U.S. Federal Services      
Goodwill [Roll Forward]      
Balance at the beginning of the period 381,719,000 382,618,000  
Acquisitions 1,168,202,000 0  
Disposal of Q2 Administrators, LLC   (899,000)  
Foreign currency translation 0 0  
Balance at the end of the period 1,549,921,000 381,719,000 382,618,000
Outside the U.S.      
Goodwill [Roll Forward]      
Balance at the beginning of the period 46,938,000 37,379,000  
Acquisitions 11,741,000 7,652,000  
Disposal of Q2 Administrators, LLC   0  
Foreign currency translation 1,334,000 1,907,000  
Balance at the end of the period $ 60,013,000 $ 46,938,000 $ 37,379,000