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Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]                
Letters of credit outstanding $ 348,000   $ 348,000     $ 321,100    
Surety bonds outstanding $ 3,100,000   $ 3,100,000     2,900,000    
Comprehensive warranty against building defects 1 year   1 year          
Maximum product warranty in years     10 years          
Self-insurance liabilities $ 282,022 $ 517,655 $ 282,022 $ 517,655 $ 273,448 $ 267,474 $ 506,523 $ 563,103
Incurred but not reported percentage of liability reserves 69.00%   69.00%     68.00%    
ROU assets $ 113,200   $ 113,200     $ 93,900    
Operating lease liabilities 129,608   129,608     $ 109,000    
Additional ROU assets under operating leases 2,700 3,600 36,700 9,100        
Payments on lease liabilities 5,700 5,900 17,200 17,600        
Total lease expense 14,600 15,300 45,600 45,500        
Variable lease costs 2,000 2,300 7,300 8,400        
Short-term lease costs $ 6,000 $ 6,200 $ 17,400 $ 17,000