Area Of Land Purchased

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The fair value of bond obligation liabilities assumed in by buyers.

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Debt Instrument, Extension Option, Minimum Paydown

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Debt Instrument, Extension Option, Term

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Debt Instrument, Interest Free Term

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Represents the maximum percentage recourse the loan has with the Company upon achievement of conditions.

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Represents the number of extension options available pertaining to a debt instrument.

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- Definition

Represents the percentage of recourse related to debt instrument.

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No definition available.

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- Definition

Represents the percentage of occupancy by the tenants of the real estate property.

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- Definition

Variable Interest Entity, Consolidated, Joint Venture Debt, Guarantee Amount

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No definition available.

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

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No definition available.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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No definition available.

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Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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MORTGAGES, NOTES AND LOANS PAYABLE (Narrative) (Details)										6 Months Ended
	Jul. 27, 2018 USD ($) extention_option	Jul. 20, 2018 USD ($)	Jun. 08, 2018 USD ($) a extention_option	Apr. 30, 2018 USD ($) extention_option	Apr. 13, 2018 USD ($)	Mar. 27, 2018 USD ($) extention_option	Jan. 25, 2018 USD ($)	Jan. 19, 2018 USD ($)	Jan. 05, 2018 USD ($) extention_option	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Mortgages, notes and loans payable
Land, buildings and equipment and developments in progress pledged as collateral										$ 4,100,000,000
Repayments on mortgage loan										41,573,000	$ 1,085,438,000
Settlement of swap liability										694,000		$ 5,961,000
250 Water Street
Mortgages, notes and loans payable
Area of land purchased \| a			1
Wacker110 N
Mortgages, notes and loans payable
Repayments on mortgage loan								$ 18,900,000
Settlement of swap liability								$ 300,000
Wacker110 N \| Construction Loans
Mortgages, notes and loans payable
Loan amount				$ 494,500,000
Number of extension options \| extention_option				2
Term of extension option				1 year
Joint venture debt guaranteed				$ 89,000,000
Wacker110 N \| Construction Loans \| London Interbank Offered Rate (LIBOR)
Mortgages, notes and loans payable
Interest rate margin (as a percent)				3.00%
Lakeland Village Center
Mortgages, notes and loans payable
Repayments on mortgage loan					$ 11,800,000
Downtown Summerlin Apartments \| Construction Loans
Mortgages, notes and loans payable
Loan amount						$ 44,100,000.0
Number of extension options \| extention_option						1
Term of extension option						3 years
Downtown Summerlin Apartments \| Construction Loans \| London Interbank Offered Rate (LIBOR)
Mortgages, notes and loans payable
Interest rate margin (as a percent)						2.25%
Lake Woodlands Crossing Retail \| Construction Loans
Mortgages, notes and loans payable
Loan amount							$ 15,500,000.0
Interest rate margin (as a percent)							1.80%
Maximum recourse percentage upon achievement of conditions							50.00%
Recourse percentage							15.00%
Occupancy percentage							90.00%
Three Hughes Landing
Mortgages, notes and loans payable
Number of extension options \| extention_option									2
Term of extension option									1 year
Long-term line of credit									$ 65,500,000
Three Hughes Landing \| One Month LIBOR
Mortgages, notes and loans payable
Interest rate margin (as a percent)									2.60%
MPC \| Summerlin \| Special Improvement District bonds
Mortgages, notes and loans payable
New SIDs issued										0
Bond obligation										$ 5,500,000
Subsequent Event \| Bridgeland Apartments \| Construction Loans
Mortgages, notes and loans payable
Loan amount	$ 34,200,000.0
Number of extension options \| extention_option	1
Term of extension option	1 year
Subsequent Event \| Bridgeland Apartments \| Construction Loans \| London Interbank Offered Rate (LIBOR)
Mortgages, notes and loans payable
Interest rate margin (as a percent)	2.25%
Subsequent Event \| Summerlin Ballpark \| Construction Loans
Mortgages, notes and loans payable
Loan amount		$ 51,200,000.0
Subsequent Event \| Summerlin Ballpark \| Construction Loans \| London Interbank Offered Rate (LIBOR)
Mortgages, notes and loans payable
Interest rate margin (as a percent)		4.92%
Notes Payable, Other Payables \| 250 Water Street
Mortgages, notes and loans payable
Number of extension options \| extention_option			3
Term of extension option			6 months
Note payable to acquire land			$ 129,700,000
Interest free term			6 months
Interest rate (as a percent)			6.00%
Minimum paydown for term extension			$ 30,000,000