Segment Information (Operating Data By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information
Goodwill impairment	$ 20,190	$ 0
Revenues:
Total revenues	2,294,980	1,996,693
Income before Income Taxes:
Income before income taxes	263,769	216,703
Adjustments to previously recorded reserves	1,300	(3,875)
Write-off of insurance receivables		11,600
Northeast
Income before Income Taxes:
Income before income taxes	18,609	7,928
Southeast
Income before Income Taxes:
Income before income taxes	54,744	37,856
Florida
Income before Income Taxes:
Income before income taxes	57,166	49,596
Midwest
Income before Income Taxes:
Income before income taxes	31,462	26,158
Texas
Income before Income Taxes:
Income before income taxes	53,595	30,971
West
Income before Income Taxes:
Income before income taxes	67,255	90,182
Other homebuilding
Income before Income Taxes:
Income before income taxes	(38,612)	(38,397)
Home sales
Income before Income Taxes:
Income before income taxes	244,219	204,294
Financial Services
Income before Income Taxes:
Income before income taxes	19,550	12,409
Total Homebuilding
Revenues:
Revenues	2,240,430	1,952,831
Total Homebuilding \| Northeast
Revenues:
Revenues	162,434	110,492
Total Homebuilding \| Southeast
Revenues:
Revenues	382,394	375,417
Total Homebuilding \| Florida
Revenues:
Revenues	506,689	396,443
Total Homebuilding \| Midwest
Revenues:
Revenues	292,169	293,590
Total Homebuilding \| Texas
Revenues:
Revenues	344,738	269,003
Total Homebuilding \| West
Revenues:
Revenues	552,006	507,886
Financial Services
Revenues:
Revenues	$ 54,550	$ 43,862

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