XML 105 R88.htm IDEA: XBRL DOCUMENT

Revenue from Contracts with Clients - Narrative (Details)	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Term of risk management consulting contracts	6 months
Clients \| Revenue from Contract with Customer Benchmark \| Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Percentage of operating revenues	5.70%	5.50%	5.00%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details