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Revenue - Receivables (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Unbilled receivables $ 10.9 $ 10.0
Total customer receivables 419.0 431.3
Billed receivables    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total customer receivables $ 408.1 $ 421.3