Annual report pursuant to Section 13 and 15(d)

Contracts in Progress - Schedule of Costs in Excess of Billings and Billings in Excess of Costs on Uncompleted Contracts (Details)

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Contracts in Progress - Schedule of Costs in Excess of Billings and Billings in Excess of Costs on Uncompleted Contracts (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disaggregation of Revenue [Line Items]    
Costs and estimated earnings in excess of billings on uncompleted contracts – current $ 48.7 $ 50.0
Uncompleted Contracts    
Disaggregation of Revenue [Line Items]    
Costs and estimated earnings in excess of billings on uncompleted contracts – current 48.7 50.0
Costs and estimated earnings in excess of billings on uncompleted contracts – noncurrent 18.2 17.3
Billings in excess of costs and estimated earnings on uncompleted contracts – current (41.1) (25.5)
Billings in excess of costs and estimated earnings on uncompleted contracts – non-current (3.9) (0.9)
Contract with customer, asset, net billings $ 21.9 $ 40.9