Fair Value Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Disclosed at fair value:
Other notes payable	$ 58,196	$ 40,098
Level 2
Disclosed at fair value:
Financial Services debt	352,627	411,821
Senior notes payable	2,524,260	3,375,564
Level 1
Disclosed at fair value:
Cash, cash equivalents, and restricted cash	1,721,122	2,632,235
Fair Value, Measurements, Recurring \| Residential mortgage loans available-for-sale \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	581,150	564,979
Measured at fair value on a non-recurring basis:
Assets, fair value	581,150	564,979
Fair Value, Measurements, Recurring \| Interest rate lock commitments \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	14,793	16,161
Measured at fair value on a non-recurring basis:
Assets, fair value	14,793	16,161
Fair Value, Measurements, Recurring \| Forward contracts \| Level 2
Measured at fair value on a recurring basis:
Liabilities, fair value	(1,021)	(5,436)
Fair Value, Measurements, Recurring \| Whole loan commitments \| Level 2
Measured at fair value on a recurring basis:
Liabilities, fair value	(1)	(498)
Fair Value, Measurements, Nonrecurring \| House and land inventory \| Level 3
Measured at fair value on a recurring basis:
Assets, fair value	0	582
Measured at fair value on a non-recurring basis:
Assets, fair value	$ 0	$ 582

Fair Value, Assets and Liabilities Measured on Non-Recurring Basis [Abstract]

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Fair Value Disclosure [Abstract]

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
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Fair value of financial and nonfinancial obligations.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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Amount of long-term notes payable classified as other.

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