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Revenue - Receivables (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total customer receivables | $ 407.4 | $ 354.9
Unbilled receivables | 10.1 | 10.9
Billed receivables |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total customer receivables | $ 397.3 | $ 344.0

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