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Acquisitions - Chasing Returns Ltd (Details) - USD ($)
$ in Millions
Aug. 03, 2021
Sep. 30, 2022
Sep. 30, 2021
Business Acquisition [Line Items]      
Goodwill   $ 58.2 $ 58.1
Chasing Returns Limited      
Business Acquisition [Line Items]      
Total merger consideration $ 6.0    
Goodwill 3.6    
Chasing Returns Limited | Software programs/platforms      
Business Acquisition [Line Items]      
Finite-lived intangible assets acquired $ 2.4