Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Reserves provided	$ 472	$ 618	$ 26,410
Letters of credit outstanding, amount	303,400	298,800
Surety Bonds Outstanding	2,200,000	1,800,000
Self-insurance liabilities	$ 635,857	$ 627,067	641,779	$ 709,798
Incurred but not reported percentage of liability reserves	74.00%	70.00%
Adjustment to self insurance reserves	$ (64,965)	$ (81,131)	(93,431)
Right-of-use assets	73,485	74,315
Operating Lease, Liability	90,083	92,663
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	14,500	16,200
Operating Lease, Payments	21,900	20,800	19,800
Variable Lease, Cost	9,900	7,700	6,200
Short-term Lease, Cost	21,200	14,200	10,200
Lease, Cost	54,800	43,300	38,200
Unsecured Letter Of Credit Facility [Member]
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 303,400	$ 298,800
Other Homebuilding [Member]
Loss Contingencies [Line Items]
Write-off of insurance receivables			$ 17,800