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Accounts Receivable, Net - Schedule of Accounts Receivable, net (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Jan. 01, 2024
Receivables [Abstract]
Contracts in progress	$ 260.2	$ 184.9
Unbilled retentions	0.1	0.1
Trade receivables	4.1	3.3
Other receivables	1.3	5.8
Allowance for expected credit losses	(0.1)	(0.1)
Total	$ 265.6	$ 194.0	$ 278.4

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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