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Revenue - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Jun. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Remaining performance obligations yet to be satisfied |  | $ 680.0 |  |
Performance obligations to be recognized as revenue within next twelve months |  | 431.9 |  |
Contract with customer, revenue recognized |  | 84.7 |  |
Retentions to be collected within one year |  | 12.7 |  | $ 16.3
Contract retentions collectible beyond one year |  | 25.9 |  | 10.0
Unapproved change orders and claims |  | $ 12.0 |  | $ 9.7
Process and Industrial Facilities Segment |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Loss on contracts | $ 3.3 |  | $ 12.7 |

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