Other Balance Sheet Items (Tables)

3 Months Ended

Dec. 31, 2022

Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents

Table 9.1: Details of Cash and Cash Equivalents and Restricted Cash
	December 31, 2022		September 30, 2022
	(in thousands)
Cash and cash equivalents	$	63,050	$	40,658
Restricted cash (1)	96,777		96,137
Cash, cash equivalents, and restricted cash	$	159,827	$	136,795

(1)Restricted cash is recorded within "Prepaid expenses and other current assets" on the Consolidated Balance Sheets. At December 31, 2022 and September 30, 2022, this balance includes $52.3 million and $60.7 million, respectively, of funds received from a customer which had previously been sold under our Receivables Purchase Agreement; this is offset by a corresponding liability in "Other current liabilities". The majority of the remaining balance are funds held in trust on behalf of certain clients; this asset is similarly offset with a corresponding liability in "Other current liabilities".

Restrictions on Cash and Cash Equivalents

Table 9.1: Details of Cash and Cash Equivalents and Restricted Cash
	December 31, 2022		September 30, 2022
	(in thousands)
Cash and cash equivalents	$	63,050	$	40,658
Restricted cash (1)	96,777		96,137
Cash, cash equivalents, and restricted cash	$	159,827	$	136,795

(1)Restricted cash is recorded within "Prepaid expenses and other current assets" on the Consolidated Balance Sheets. At December 31, 2022 and September 30, 2022, this balance includes $52.3 million and $60.7 million, respectively, of funds received from a customer which had previously been sold under our Receivables Purchase Agreement; this is offset by a corresponding liability in "Other current liabilities". The majority of the remaining balance are funds held in trust on behalf of certain clients; this asset is similarly offset with a corresponding liability in "Other current liabilities".

Supplementary Cash Flow Information

Table 9.2: Supplemental Disclosures of Cash Flow Information
	For the Three Months Ended
	December 31, 2022		December 31, 2021
	(in thousands)
Interest payments	$	19,748	$	8,943
Income tax payments	$	4,982	$	8,009

Details of Accounts Receivable

Table 9.3: Details of Accounts Receivable, Net
	December 31, 2022		September 30, 2022
	(in thousands)
Billed and billable receivables	$	879,851	$	723,979
Unbilled receivables	142,844		91,404
Allowance for credit losses	(8,649)		(8,273)
Accounts receivable, net	$	1,014,046	$	807,110