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Revenue from Contracts with Customers (Tables)
9 Months Ended
Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]  
Schedule of Accounts, Notes, Loans and Financing Receivable
The table below represents the balances of our customer receivables and deferred revenue:

June 30,September 30,
20232022
(in millions)
Billed receivables$211.2 $230.5 
Unbilled receivables5.5 3.1 
Gross customer receivables216.7 233.6 
Allowance for credit losses(6.4)(5.6)
Receivables, net$210.3 $228.0 
Deferred revenue$8.7 $8.1