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Revenue from Contracts with Customers (Tables)
6 Months Ended
Mar. 31, 2024
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. Deferred revenue primarily consists of monitoring, leak detection, software and hosting services.

March 31,September 30,
20242023
(in millions)
Billed receivables$233.7 $218.1 
Unbilled receivables4.4 6.3 
Gross customer receivables238.1 224.4 
Allowance for credit losses(8.4)(7.3)
Receivables, net$229.7 $217.1 
Deferred revenue$8.9 $9.2