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Commitments and Contingencies (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]                
Letters of credit outstanding $ 341,200   $ 341,200     $ 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 $ 273,448 $ 506,523 $ 273,448 $ 506,523 $ 276,294 $ 267,474 $ 547,621 $ 563,103
Incurred but not reported percentage of liability reserves 68.00%   68.00%     68.00%    
ROU assets $ 115,500   $ 115,500     $ 93,900    
Operating lease liabilities 131,615   131,615     $ 109,000    
Additional ROU assets under operating leases 14,500 1,900 34,100 5,500        
Payments on lease liabilities 5,700 5,800 11,500 11,700        
Total lease expense 15,200 15,200 30,900 30,200        
Variable lease costs 2,300 2,500 5,300 6,100        
Short-term lease costs $ 5,400 $ 6,000 $ 11,500 $ 10,800