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Revenue - Contract Balances (Narrative) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Capitalized Contract Cost [Line Items] |  |
Unbilled receivables | $ 19.4 | $ 31.3
Revenue recognized | 157.7 |
Other Noncurrent Assets |  |
Capitalized Contract Cost [Line Items] |  |
Unbilled receivables | $ 8.3 |

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