v3.26.1
Segment Analysis - Narrative (Details)
market in Thousands
9 Months Ended
Jun. 30, 2026
employee
segment
country
currency
market
Segment Reporting [Line Items]  
Number of reportable segments | segment 4
Number of employees | employee 5,200
Number of countries in which entity operates (more than) 180
Self-Directed/Retail  
Segment Reporting [Line Items]  
Number of global financial markets (more than) | market 18
Payments  
Segment Reporting [Line Items]  
Number of countries in which entity operates (more than) 180
Number of different types of foreign currencies (more than) | currency 140