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Segment Disclosures - Income before Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | $ 447,133 | $ 533,568 | $ 849,137 | $ 1,004,260
Equity-based compensation expense |  |  | (36,339) | (35,242)
Home Building Segment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 417,517 | 488,536 | 787,001 | 930,214
Mortgage Banking |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 29,616 | 45,032 | 62,136 | 74,046
Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 393,426 | 467,802 | 768,415 | 892,085
Operating Segments | Home Building Segment | Mid Atlantic |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 191,390 | 209,166 | 378,223 | 399,130
Operating Segments | Home Building Segment | North East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 57,964 | 54,372 | 113,075 | 101,229
Operating Segments | Home Building Segment | Mid East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 61,729 | 63,588 | 115,338 | 129,989
Operating Segments | Home Building Segment | South East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 51,518 | 94,442 | 97,248 | 185,847
Operating Segments | Mortgage Banking |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 30,825 | 46,234 | 64,531 | 75,890
Corporate and Reconciling Items |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 53,707 | 65,766 | 80,722 | 112,175
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Contract land deposit reserve adjustment | (13,153) | 1,325 | (21,270) | 8,791
Equity-based compensation expense | (17,813) | (18,101) | (36,339) | (35,242)
Corporate capital allocation | (91,898) | (82,494) | (179,525) | (159,555)
Unallocated corporate overhead | (34,364) | (33,816) | (90,333) | (85,520)
Consolidation adjustments and other | 13,538 | 6,363 | 17,470 | 4,092
Segment Reporting, Reconciling Item, Corporate Nonsegment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Corporate Interest Expense | (6,675) | (6,670) | (13,806) | (13,265)
Interest income | $ 20,276 | $ 34,171 | $ 45,475 | $ 73,764

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