Mortgages, Notes and Loans Payable, Net (Narrative) (Details)	1 Months Ended	9 Months Ended		12 Months Ended
	Aug. 31, 2022 USD ($)	Sep. 30, 2022 USD ($) extension	Sep. 30, 2021 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2018 USD ($)
Mortgages, notes and loans payable
Land, buildings and equipment and developments in progress pledged as collateral		$ 7,424,000			$ 6,617,000
Repayments		534,458,000	$ 1,758,772,000
SID Bonds obligations assumed by buyers		$ 5,860,000	$ 8,484,000
SOFR
Mortgages, notes and loans payable
Interest rate margin	3.90%	2.98%
Asset Pledged as Collateral with Right
Mortgages, notes and loans payable
Land, buildings and equipment and developments in progress pledged as collateral		$ 4,700,000,000
Term loan
Mortgages, notes and loans payable
Outstanding borrowings		242,200,000
Term loan | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Mortgages, notes and loans payable
Proceeds from sale of properties				$ 69,800,000
Special Improvement District bonds
Mortgages, notes and loans payable
SID Bonds obligations assumed by buyers		5,860,000
Special Improvement District bonds | Summerlin
Mortgages, notes and loans payable
Special improvement district bond issued		0
SID Bonds obligations assumed by buyers		$ 5,900,000
Non-recourse Financing
Mortgages, notes and loans payable
Face amount	$ 392,000,000
$700 Million loan due 2023
Mortgages, notes and loans payable
Face amount				700,000,000
Number of options to increase line of credit | extension		1
Option to increase borrowing capacity		$ 50,000,000
$700 Million loan due 2023 | Revolving Credit Facility
Mortgages, notes and loans payable
Face amount				85,000,000
$700 Million loan due 2023 | Term loan
Mortgages, notes and loans payable
Face amount				615,000,000		$ 615,000,000
$700 Million loan due 2023 | Line of credit | Revolving Credit Facility
Mortgages, notes and loans payable
Outstanding borrowings		$ 0
Term loan
Mortgages, notes and loans payable
Repayments				$ 181,800,000