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Segment Disclosures - Income before Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | $ 574,012 | $ 417,465 | $ 1,139,957 | $ 729,471
Equity-based compensation expense | (20,087) | (13,379) | (31,755) | (27,850)
Corporate interest expense | (12,257) | (13,270) | (25,423) | (26,667)
Home Building Segment |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 544,947 | 378,263 | 1,061,834 | 631,682
Corporate interest expense | (11,852) | (12,850) | (24,656) | (25,856)
Mortgage Banking |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 29,065 | 39,202 | 78,123 | 97,789
Corporate interest expense | (405) | (420) | (767) | (811)
Operating Segments |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 555,170 | 375,169 | 1,065,622 | 684,631
Operating Segments | Home Building Segment | Mid Atlantic |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 251,739 | 174,481 | 501,520 | 303,548
Operating Segments | Home Building Segment | North East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 41,297 | 21,510 | 67,225 | 36,737
Operating Segments | Home Building Segment | Mid East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 82,512 | 59,887 | 153,695 | 108,828
Operating Segments | Home Building Segment | South East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 150,822 | 78,919 | 264,276 | 135,584
Operating Segments | Mortgage Banking |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 28,800 | 40,372 | 78,906 | 99,934
Corporate and Reconciling Items |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Income before taxes | 18,842 | 42,296 | 74,335 | 44,840
Contract land deposit reserve adjustment | 419 | 7,178 | 6,345 | 13,374
Equity-based compensation expense | (20,087) | (13,379) | (31,755) | (27,850)
Corporate capital allocation | 77,512 | 63,032 | 147,256 | 124,583
Unallocated corporate overhead | (32,282) | (33,668) | (77,543) | (73,804)
Consolidation adjustments and other (4) | 5,096 | 31,944 | 54,603 | 34,330
Corporate interest expense | (11,816) | (12,811) | (24,571) | (25,793)
Corporate and Reconciling Items | Home Building Segment | Mid Atlantic |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Corporate capital allocation | 37,121 | 31,135 | 71,208 | 61,731
Corporate and Reconciling Items | Home Building Segment | North East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Corporate capital allocation | 8,158 | 6,457 | 15,245 | 12,495
Corporate and Reconciling Items | Home Building Segment | Mid East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Corporate capital allocation | 12,875 | 11,066 | 24,292 | 21,690
Corporate and Reconciling Items | Home Building Segment | South East |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Corporate capital allocation | $ 19,358 | $ 14,374 | $ 36,511 | $ 28,667

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