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Segment Disclosures - Additional Information (Detail) | 6 Months Ended
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Jun. 30, 2021 segment
Senior Notes due 2022 |
Segment Reporting Information [Line Items] |
Senior notes interest rate | 3.95%
3.00% Senior Notes due 2030 |
Segment Reporting Information [Line Items] |
Senior notes interest rate | 3.00%
Home Building Segment |
Segment Reporting Information [Line Items] |
Number of reportable segments | 4
Mortgage Banking |
Segment Reporting Information [Line Items] |
Number of reportable segments | 1

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