Revenue and Contracts in Process - Schedule of Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
Segment Reporting Information [Line Items]
Total revenue	$ 1,246.0	$ 1,107.1
Infrastructure
Segment Reporting Information [Line Items]
Total revenue	1,210.3	1,071.6
Life Sciences
Segment Reporting Information [Line Items]
Total revenue	12.5	9.8
Spectrum
Segment Reporting Information [Line Items]
Total revenue	$ 23.2	$ 25.7

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details