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Summary of Significant Accounting Policies - Property and equipment & Leases (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Property and Equipment    
Assets classified as held-for-sale $ 0.0 $ 0.0
Leases    
Lease, Practical Expedient, Lessor Single Lease Component true  
Equipment improvement | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Equipment improvement | Maximum    
Property and Equipment    
Property and equipment useful life 10 years  
Automobiles and trucks | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Automobiles and trucks | Maximum    
Property and Equipment    
Property and equipment useful life 10 years  
Building and improvements | Minimum    
Property and Equipment    
Property and equipment useful life 10 years  
Building and improvements | Maximum    
Property and Equipment    
Property and equipment useful life 30 years  
Construction equipment | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Construction equipment | Maximum    
Property and Equipment    
Property and equipment useful life 10 years  
Vessels and other equipment | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Vessels and other equipment | Maximum    
Property and Equipment    
Property and equipment useful life 40 years  
Office equipment | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Office equipment | Maximum    
Property and Equipment    
Property and equipment useful life 5 years  
Dry-docking capitalized costs | Minimum    
Property and Equipment    
Property and equipment useful life 3 years  
Dry-docking capitalized costs | Maximum    
Property and Equipment    
Property and equipment useful life 7 years