XML 208 R21.htm IDEA: XBRL DOCUMENT v3.23.1
Revenue from Contracts with Customers (Tables)
6 Months Ended
Mar. 31, 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.

March 31,September 30,
20232022
(in millions)
Billed receivables$231.7 $230.5 
Unbilled receivables3.9 3.1 
  Gross customer receivables235.6 233.6 
Allowance for credit losses(6.3)(5.6)
Receivables, net$229.3 $228.0 
Deferred revenue$7.8 $8.1