Debt Instrument, Covenant Compliance, Increase (Decrease) In Restricted Cash

No definition available.

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Balance Type:	debit
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- Definition

Debt Instrument, Extension Option, Term

+ References

No definition available.

+ Details

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- Definition

Debt Instrument, Option To Increase Borrowing Capacity

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Number Of Bonds Issued

+ References

No definition available.

+ Details

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- Definition

This element represents special improvement district bond transfers associated with land sales.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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+ Details

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- Definition

The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position.

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Mortgages, Notes and Loans Payable, Net (Narrative) (Details)	1 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2021 USD ($)	Apr. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) bond	Jun. 30, 2020 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)
Mortgages, notes and loans payable
Land, buildings and equipment and developments in progress pledged as collateral			$ 4,400,000,000
Special Improvement District bond transfers associated with land sales			1,010,000	$ 779,000
Increase in restricted cash			33,600,000
Special Improvement District bonds
Mortgages, notes and loans payable
Special Improvement District bond transfers associated with land sales			$ 1,010,000
Interest rate			4.00%
Special Improvement District bonds \| Summerlin
Mortgages, notes and loans payable
Number of bonds issued \| bond			0
Special Improvement District bond transfers associated with land sales			$ 1,000,000.0
Construction Loans \| Marlow development
Mortgages, notes and loans payable
Face amount		$ 82,600,000
Term of extension option		1 year
Construction Loans \| Marlow development \| LIBOR
Mortgages, notes and loans payable
Interest rate margin		2.95%
Construction Loans \| Starling at Bridgeland
Mortgages, notes and loans payable
Face amount		$ 42,700,000
Term of extension option		1 year
Construction Loans \| Starling at Bridgeland \| Minimum
Mortgages, notes and loans payable
Interest rate		3.75%
Construction Loans \| Starling at Bridgeland \| LIBOR
Mortgages, notes and loans payable
Interest rate margin		2.75%
Construction Loans \| 8770 New Trails
Mortgages, notes and loans payable
Face amount			35,500,000					$ 35,500,000
Construction Loans \| Lakeside Row \| Subsequent Event
Mortgages, notes and loans payable
Face amount	$ 35,500,000
Interest rate margin	3.15%
$700 Million loan due 2023
Mortgages, notes and loans payable
Face amount					$ 700,000,000.0
Option to increase borrowing capacity					50,000,000.0
$700 Million loan due 2023 \| Term loan
Mortgages, notes and loans payable
Face amount			615,000,000.0		615,000,000.0	$ 615,000,000.0			$ 615,000,000.0
$700 Million loan due 2023 \| Line of credit \| Revolving Credit Facility
Mortgages, notes and loans payable
Face amount					$ 85,000,000.0
Outstanding borrowings			0
The Woodlands and Bridgeland Credit Facility \| Term loan
Mortgages, notes and loans payable
Face amount							$ 100,000,000.0
The Woodlands and Bridgeland Credit Facility \| Line of credit
Mortgages, notes and loans payable
Facility amount							250,000,000.0
The Woodlands and Bridgeland Credit Facility \| Line of credit \| Revolving Credit Facility
Mortgages, notes and loans payable
Face amount							$ 150,000,000.0
Outstanding borrowings			$ 50,000,000.0