v3.26.1
Commitments and Contingencies (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Apr. 20, 2026
USD ($)
Jun. 28, 2026
USD ($)
bankingInstitution
Jun. 29, 2025
USD ($)
Jun. 28, 2026
USD ($)
bankingInstitution
Jun. 29, 2025
USD ($)
Dec. 28, 2025
USD ($)
Other Commitments [Line Items]            
Number of financial banking institutions | bankingInstitution   2   2    
Revenue reversal   $ 961,986 $ 724,052 $ 1,685,160 $ 1,274,133  
Performance and Payment Bond            
Other Commitments [Line Items]            
Outstanding performance and payment bonds   917,400   917,400    
Cost to complete bonded projects   396,600   $ 396,600    
Non-Union Electric Segment Customer | Customer Concentration Risk | Revenue from Contract with Customer Benchmark            
Other Commitments [Line Items]            
Concentration risk percentage       11.00%    
Revenue reversal       $ 187,400    
Non-Union Electric Segment Customer | Customer Concentration Risk | Accounts Receivable and Contract Assets Benchmark            
Other Commitments [Line Items]            
Combined accounts receivable and contract assets   $ 150,600   $ 150,600   $ 131,900
Concentration risk percentage       20.00%   19.00%
City of Chicago            
Other Commitments [Line Items]            
Revenue reversal $ (9,000)