Revenue - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
Dec. 31, 2024	Jun. 30, 2024
Disaggregation of Revenue [Line Items]
Remaining performance obligations yet to be satisfied	$ 1,000.0
Performance obligations to be recognized as revenue within next twelve months	558.9
Contract with customer, revenue recognized	149.9
Retentions to be collected within one year	12.9	$ 11.6
Contract retentions collectible beyond one year	51.9	28.6
Unapproved change orders and claims	$ 8.4	$ 9.9

Performance obligations to be recognized as revenue within next twelve months.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Amount of cost incurred on construction contract for unapproved change order, claim, or similar item subject to uncertainty.

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