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Revenue Recognition - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |
Deferred revenue, revenue recognized | $ 47,600 | $ 37,700 |
Revenue | $ (1,402,675) | $ (1,327,041) |
Diluted (in dollars per share) | $ (0.69) | $ (1.04) |
Revenue, remaining performance obligation, amount | $ 297,000 |  |
Change in contract estimates |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue | $ (6,800) | $ 4,600 |
Diluted (in dollars per share) | $ (0.08) | $ 0.07 |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue, remaining performance obligation, percentage | 61.00% |  |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 12 months |  |
Unbilled receivables |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Unbilled contracts receivable | $ 23,400 |  | $ 31,900

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