Stockholders' Equity Note [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Losses (gains) on cash flow hedges Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest rate swap contracts Interest Rate Swap [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassifications out of accumulated other comprehensive income (loss) Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Interest expense Interest Expense Provision for income taxes Income Tax Expense (Benefit) Net of tax Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Revenue from Contract with Customer [Abstract] Revenue disaggregated by revenue source Disaggregation of Revenue [Table Text Block] Contract with customer, assets and liabilities Contract with Customer, Asset and Liability [Table Text Block] Remaining performance obligation, expected timing of satisfaction Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Interest rate derivatives Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest expense Interest Expense [Member] Effect of the Company's derivative financial instruments on the income statement Derivative Instruments, Gain (Loss) [Line Items] Interest rate derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax Interest rate derivatives Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Interest expense Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax Interest expense Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net Interest expense Earnings Per Share [Abstract] Basic EPS: Earnings Per Share, Basic [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Net income Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Denominator: Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted-average basic common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted EPS: Earnings Per Share, Diluted [Abstract] Numerator: Net Income (Loss) Available to Common Stockholders, Diluted [Abstract] Net income attributable to common stockholders Denominator: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Restricted stock and stock options (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Warrants (in shares) Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants Weighted-average diluted common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Basic income per share (in dollars per share) Earnings Per Share, Basic Diluted income per share (in dollars per share) Earnings Per Share, Diluted Other Liabilities [Abstract] WARRANTS Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Assets: Assets, Fair Value Disclosure [Abstract] Interest rate derivative assets Interest Rate Derivative Assets, at Fair Value Liabilities: Liabilities, Fair Value Disclosure [Abstract] Interest rate derivative liabilities Interest Rate Derivative Liabilities, at Fair Value Commitments and Contingencies Disclosure [Abstract] Lessor, Lease, Description [Table] Lessor, Lease, Description [Table] Loss Contingency Nature [Axis] Loss Contingency Nature [Axis] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Guarantee Obligations Guarantee Obligations [Member] Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Downtown Columbia Downtown Columbia [Member] Represents information pertaining to Downtown Columbia. Lessor, Lease, Description [Line Items] Lessor, Lease, Description [Line Items] Outstanding letters of credit Letters of Credit Outstanding, Amount Amount of outstanding surety bonds Surety Bonds Outstanding Amount The total amount of the contingent obligation under surety bonds outstanding as of the reporting date. Rent expense Operating Leases, Rent Expense Loss contingency guaranteed amount limit Loss Contingency Guaranteed Amount The amount of guarantee given for bond issue. Product liability contingency, third party recovery, percentage Guarantor Obligations, Reserved Percentage Of Residential Units Guarantor Obligations, Reserved Percentage Of Residential Units Number of open condominium towers Guarantor Obligations, Number Of Open Condominium Towers Number Of Open Condominium Towers Number of reserved housing units Guarantor Obligations, Number Of Reserved Housing Units Number Of Reserved Housing Units Business Combinations [Abstract] Real Estate [Table] Real Estate [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] West Windsor, New Jersey West Windsor, New Jersey [Member] West Windsor, New Jersey [Member] Cottonwood Mall Cottonwood Mall [Member] Cottonwood Mall [Member] Holladay, Utah Land Parcel, Holladay, Utah [Member] Land Parcel, Holladay, Utah [Member] Real Estate [Line Items] Real Estate [Line Items] Area of land sold (in acres) Area of Land Sold Represents the area of land sold by the entity during the period. Proceeds from sale of real estate Proceeds from Sale of Real Estate Real estate liabilities associated with assets held for development and sale Real Estate Liabilities Associated with Assets Held for Development and Sale Real estate assets held for development and sale Real Estate Assets Held for Development and Sale Square footage of building (in square feet) Square Footage Of Building Square Footage Of Building Gains on sales of properties Gains (Losses) on Sales of Investment Real Estate Proceeds from sales of properties Proceeds from Sale of Real Estate Held-for-investment Note receivable Nontrade Receivables Interest rate (as a percent) Debt Instrument, Interest Rate, Stated Percentage Accounting Policies [Abstract] Operating cash flows on operating leases Operating Lease, Payments Statement of Cash Flows [Abstract] Cash Flows from Operating Activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Depreciation Depreciation Amortization Amortization Amortization of deferred financing costs Amortization of Debt Issuance Costs and Discounts Amortization of intangibles other than in-place leases Amortization of Intangibles Other than in Place Leases The aggregate expense charged against earnings to allocate the cost of intangible assets other than in place lease (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Straight-line rent amortization Straight Line Rent Deferred income taxes Deferred Income Tax Expense (Benefit) Restricted stock and stock option amortization Allocated Share-based Compensation Expense Net gain on sales and acquisitions of properties Gain (Loss) On Sale And Acquisition Of Properties Gain (Loss) On Sale And Acquisition Of Properties Selling profit from sales-type leases Sales-type Lease, Selling Profit (Loss) Net decrease (increase) in minimum pension liability Increase (Decrease) in Obligation, Pension Benefits Equity in earnings from real estate and other affiliates, net of distributions Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Provision for doubtful accounts Provision for Loan, Lease, and Other Losses Master Planned Communities land acquisitions Master Planned Community Land Acquisitions Represents master planned community land acquisitions expenditure during the period. Master Planned Communities development expenditures Master Planned Community Development Expenditures Represents master planned community development expenditures during the period. Master Planned Communities cost of sales Master Planned Community Cost of Sales Represents master planned community cost of sales. Condominium development expenditures Condominium Development Expenditures Represents condominium development expenditures during the period. Condominium rights and unit cost of sales Condominium Rights And Unit Cost Of Sales Represents costs incurred directly related to generating condominium unit sales revenue. Net changes: Increase (Decrease) in Operating Capital [Abstract] Accounts and notes receivable Increase (Decrease) in Accounts and Notes Receivable Prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets Condominium deposits received Increase (Decrease) in Condominium Deposits Increase (Decrease) in Condominium Deposits Deferred expenses Increase (Decrease) in Deferred Charges Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows from Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Property and equipment expenditures Payments to Acquire Property, Plant, and Equipment Operating property improvements Payments to Develop Real Estate Assets Property development and redevelopment Payments to Acquire and Develop Real Estate Acquisition of assets Other Payments to Acquire Businesses Reimbursements under Tax Increment Financings Proceeds From Tax Increment Financing Proceeds From Tax Increment Financing Distributions from real estate and other affiliates Proceeds from Distributions Received from Real Estate Partnerships Notes issued to real estate and other affiliates Origination of Notes Receivable from Related Parties Investments in real estate and other affiliates, net Payments to Acquire Interest in Subsidiaries and Affiliates Cash used in investing activities Net Cash Provided by (Used in) Investing Activities Cash Flows from Financing Activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from mortgages, notes and loans payable Proceeds from Issuance of Long-term Debt Principal payments on mortgages, notes and loans payable Repayments of Long-term Debt Purchase of treasury stock Payments for Repurchase of Common Stock Special Improvement District bond funds released from (held in) escrow Special Improvement District Bonds Held In Escrow Special Improvement District Bonds Released from (Held In) Escrow Deferred financing costs and bond issuance costs, net Payments of Financing Costs Taxes paid on stock options exercised and restricted stock vested Payments Related to Tax Withholding for Share-based Compensation Gain on unwinding of swaps Proceeds from Derivative Instrument, Financing Activities Stock options exercised Proceeds from Stock Options Exercised Issuance of noncontrolling interests Proceeds from Noncontrolling Interests Cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, cash equivalents and restricted cash at beginning of period Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash, cash equivalents and restricted cash at end of period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Interest capitalized Interest Costs Capitalized Income taxes (refunded) paid, net Income Taxes Paid, Net Non-Cash Transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Accrued property improvements, developments and redevelopments Capital Expenditures Incurred but Not yet Paid Special Improvement District bond transfers associated with land sales Special Improvement District Bond Transfers Associated with Land Sales This element represents special improvement district bond transfers associated with land sales. Accrued interest on construction loan borrowing Accrued Interest Included In Construction Loan Payable Non Cash Represents the accrued interest included in construction loan payable. Acquisition of below market lease intangible Below Market Lease, Acquired Capitalized stock compensation Capitalized Share Based Compensation Amounts capitalized relating to share based compensation OTHER ASSETS AND LIABILITIES OTHER ASSETS AND LIABILITIES Other Assets and Liabilities [Text Block] Entire disclosure of other assets and other liabilities of the entity. Accounting Policies and Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Segment Reporting [Abstract] Summary of segment operating results Schedule of Segment Reporting Information, by Segment [Table Text Block] Summary of assets by segment and the reconciliation of total segment assets to the total assets in the condensed consolidated balance sheets Reconciliation of Assets from Segment to Consolidated [Table Text Block] Summary of assets and liabilities measured on a recurring basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Summary of assets and liabilities that were measured at fair value on a non-recurring basis Fair Value, Assets Measured on Recurring Basis [Table Text Block] Fair Value, by Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Level 1 Level 3 Level 2 Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement [Domain] Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Amount Reported Value Measurement [Member] Estimated Fair Value Estimate of Fair Value Measurement [Member] Financial instruments that are not measured at fair value on a recurring basis Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Cash and restricted cash Accounts receivable, net Accounts Receivable, Fair Value Disclosure Notes receivable, net Notes Receivable, Fair Value Disclosure Liabilities: Fixed-rate debt Long-term Debt, Percentage Bearing Fixed Interest, Amount Variable-rate debt Long-term Debt, Percentage Bearing Variable Interest, Amount Allowance for doubtful accounts Allowance for Doubtful Accounts Receivable Allowance for notes receivable Financing Receivable, Allowance for Credit Losses Disclosure of Compensation Related Costs, Share-based Payments [Abstract] STOCK BASED PLANS Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] Accounting Standards Update 2016-02 Accounting Standards Update 2016-02 [Member] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Operating lease right-of-use assets, net Operating Lease, Right-of-Use Asset Operating lease obligations Operating Lease, Liability Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Restricted Stock [Member] Stock-based plans Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Restricted Stock Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Restricted stock outstanding at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Restricted stock outstanding at the end of the period (in shares) Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Restricted stock outstanding at the beginning of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Restricted stock outstanding at the end of the period (in dollars per share) Stock based compensation expense Share based compensation costs capitalized Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount Statement of Financial Position [Abstract] Preferred stock, par value (in dollars per share) Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Common stock, shares issued (in shares) Common Stock, Shares, Issued Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Treasury stock, shares held (in shares) Treasury Stock, Shares Summary of EPS calculations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Stock Option Employee Stock Option [Member] Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Stock options outstanding at the beginning of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Expired (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period Stock options outstanding at the end of the period (in shares) Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Stock options outstanding at the beginning of the period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Forfeited (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Expired (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price Stock options outstanding at the end of the period (in dollars per share) Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Unsecured 5.375% Senior Notes Unsecured Debt [Member] Loan amount Debt Instrument, Face Amount Change In Contract With Customer, Asset [Roll Forward] Change In Contract With Customer, Asset [Roll Forward] Change In Contract With Customer, Asset Beginning balance Contract with Customer, Asset, Net Consideration earned during the period Contract With Customer, Asset, Consideration Earned In Period Contract With Customer, Asset, Consideration Earned In Period Consideration received during the period Contract With Customer, Asset, Consideration Received In Period Contract With Customer, Asset, Consideration Received In Period Ending balance Change In Contract With Customer, Liability [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] Change In Contract With Customer, Liability [Roll Forward] Beginning balance Contract with Customer, Liability Consideration earned during the period Contract with Customer, Liability, Revenue Recognized Consideration received during the period Contract With Customer, Liability, Increase From Consideration Received Contract With Customer, Liability, Increase From Consideration Received Ending balance Asset Impairment Charges [Abstract] Impairment on real estate Equity Method Investment, Other than Temporary Impairment FAIR VALUE Fair Value Disclosures [Text Block] Class of Warrant or Right [Table] Class of Warrant or Right [Table] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Financial Officer Chief Financial Officer [Member] Chief Executive Officer Chief Executive Officer [Member] President President [Member] Class of Warrant or Right [Axis] Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Management Warrants Management Warrants [Member] Represents the Management Warrants, a type of the warrant that gives the holder the right to purchase shares of stock in accordance with the terms of the instrument, usually upon payment of a specified amount. Class of Warrant or Right [Line Items] Class of Warrant or Right [Line Items] Number of shares called by warrants (in shares) Class of Warrant or Right, Number of Securities Called by Warrants or Rights Exercise price (in dollars per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Proceeds from issuance of Management warrants Proceeds from Issuance of Warrants Total warrant price Class Of Warrant or Right Price Of Warrants Or Rights The price of warrants or rights outstanding. Summary of the significant components of prepaid expenses and other assets Schedule of Other Assets [Table Text Block] Summary of the significant components of accounts payable and accrued expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Assets: Assets [Abstract] Investment in real estate: Real Estate Investments, Net [Abstract] Master Planned Communities assets Real Estate Investments, Other Buildings and equipment Property, Plant and Equipment, Gross Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Land Land Developments Development in Process Net property and equipment Property, Plant and Equipment, Net Investment in real estate and other affiliates Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Net investment in real estate Real Estate Investment Property, Net Net investment in lease receivable Net Investment in Lease Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash Accounts receivable, net Accounts Receivable, Net Municipal Utility District receivables, net Municipal Utility District Receivables For unclassified balance sheet, amounts due from municipal Utility district in the normal course of business includes principal and interest amounts. Notes receivable, net Financing Receivable, Net Deferred expenses, net Deferred Costs Prepaid expenses and other assets, net Prepaid Expense and Other Assets Total assets Assets Liabilities: Liabilities [Abstract] Mortgages, notes and loans payable, net Notes and Loans Payable Deferred tax liabilities Deferred Income Tax Liabilities, Net Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Total liabilities Liabilities Commitments and contingencies (see Note 10) Commitments and Contingencies Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Preferred stock: $.01 par value; 50,000,000 shares authorized, none issued Preferred Stock, Value, Outstanding Common stock: $.01 par value; 150,000,000 shares authorized, 43,752,777 issued and 43,232,928 outstanding as of September 30, 2019 and 43,511,473 shares issued and 42,991,624 outstanding as of December 31, 2018 Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital, Common Stock Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Treasury stock, at cost, 519,849 shares as of September 30, 2019 and December 31, 2018 Treasury Stock, Value Total stockholders' equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and equity Liabilities and Equity EARNINGS PER SHARE Earnings Per Share [Text Block] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Tin Building Tin Building [Member] Tin Building [Member] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate expenses and other items Corporate, Non-Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Operating Assets Operating Assets [Member] Represents the Operating Assets, a reportable segment of the entity. It includes commercial, mixed use and retail properties currently generating revenues. Master Planned Communities Master Planned Communities [Member] Represents the Master Planned Communities, a reportable segment of the entity. It includes the development and sale of land, in large-scale, long-term community development projects in and around Las Vegas, Nevada; Houston, Texas and Columbia, Maryland. Seaport District Seaport District [Member] Seaport District [Member] Strategic Developments Strategic Developments [Member] Represents the Strategic Developments, a reportable segment of the entity. It includes all properties held for development and redevelopment, including the current rental property operations as well as one residential condominium project located in Natick (Boston), Massachusetts. Segments reporting Segment Reporting Information [Line Items] Number of reportable segments Number of Reportable Segments Area of real estate property (in sqft) Area of Real Estate Property Number of primary locations Number Of Primary Locations Number Of Primary Locations Operating locations Number Of Operating Locations Number Of Operating Locations Total revenues Revenues Total operating expenses Operating Expenses Segment operating income Operating Income (Loss) Before Other Items The net result for the period of deducting operating expenses from operating revenues but before other operating items. Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Interest (expense) income, net Interest Income (Expense), Net Other (loss) income, net Other Operating Income (Loss) The total amount of other operating income (loss). The components are not separately disclosed on the income statement. Equity in earnings (losses) from real estate and other affiliates Income (Loss) from Equity Method Investments Selling profit from sales-type leases Gain (loss) on sale or disposal of real estate Segment EBT Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Corporate income, expenses and other items Expenses And Other Expenses And Other Net income Statement of Comprehensive Income [Abstract] Other comprehensive (loss) income: Other Comprehensive Income (Loss), Net of Tax [Abstract] Interest rate swaps Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Interest rate swaps Capitalized swap interest (expense) income Other Comprehensive Income Loss Capitalized Swap Interest Net Of Tax Settled derivative gains and losses, net of tax, associated with hedged variable debt for which the underlying interest is capitalizable. Pension adjustment Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Adoption of ASU 2018-02 Tax Cuts and Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Tax Effect Tax Cuts and Jobs Act Of 2017, Reclassification From AOCI To Retained Earnings, Tax Effect Adoption of ASU 2017-12 New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Change On Other Comprehensive Income New Accounting Pronouncement Or Change In Accounting Principle, Effect Of Change On Other Comprehensive Income Terminated swap amortization Other Comprehensive Income (Loss), Derivative, Terminated Swap Amortization Other Comprehensive Income (Loss), Derivative, Terminated Swap Amortization Other comprehensive (loss) income Other Comprehensive Income, Other, Net of Tax Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to common stockholders Comprehensive Income (Loss), Net of Tax, Attributable to Parent Debt Disclosure [Abstract] MORTGAGES, NOTES AND LOANS PAYABLE, NET Debt Disclosure [Text Block] Interest rate swaps, tax (benefit) expense Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax Pension deferred tax benefit Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, Tax Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities [Member] Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Designated as Hedging Instrument Designated as Hedging Instrument [Member] Derivative Instrument, Interest Rate and Maturity Date [Axis] Derivative Instrument, Interest Rate and Maturity Date [Axis] Derivative Instrument, Interest Rate and Maturity Date [Axis] Derivative Instrument Interest Rate And Maturity Date [Domain] Derivative Instrument Interest Rate And Maturity Date [Domain] Derivative Instrument, Interest Rate and Maturity Date [Domain] Fixed Interest Rate 4.89% Maturing January 2032 Fixed Interest Rate 4.89% Maturing January 2032 [Member] Fixed Interest Rate 4.89% Maturing January 2032 Summerlin Summerlin [Member] Represents the information pertaining to Summerlin Acquisition properties owned by the entity. Outlet Collection, Riverwalk Outlet Collection, Riverwalk [Member] Outlet Collection, Riverwalk [Member] 250 Water Street 250 Water Street [Member] 250 Water Street [Member] Woodlands and Bridgeland Communities Woodlands and Bridgeland Communities [Member] Woodlands and Bridgeland Communities [Member] Creekside Park West Creekside Park West [Member] Creekside Park West [Member] Millennium Phase III Apartments Millennium Phase III Apartments [Member] Millennium Phase III Apartments [Member] Aristocrat Aristocrat [Member] Aristocrat [Member] Two Summerlin Two Summerlin [Member] Two Summerlin [Member] 8770 New Trails 8770 New Trails [Member] 8770 New Trails [Member] A'ali'i A'ali'i [Member] A'ali'i [Member] Ke Kilohana Ke Kilohana [Member] Ke Kilohana [Member] Wacker110 N Wacker110 N [Member] Represents the information pertaining to 110 N. Wacker, a property owned by the entity. Mr. C Seaport Mr.C Seaport [Member] Mr.C Seaport [Member] Hhc242 Self Storage Facility Hhc242 Self Storage Facility [Member] Represents the information pertaining to HHC 242 Self Storage Facility. Hhc2978 Self Storage Facility Hhc2978 Self Storage Facility [Member] Represents the information pertaining to HHC 2978 Self Storage Facility. Resort and Conference Center Resort And Conference Center [Member] Represents the information pertaining to Resort and Conference Center, a property owned by The Woodlands, that was acquired by the entity. Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Special Improvement District Bonds Bonds [Member] Mortgages Mortgages [Member] Revolving Credit Facility Revolving Credit Facility [Member] Construction Loans Construction Loans [Member] Term Loan Term Loan [Member] Represents the information pertaining to the term loan facility which is provided under the credit agreement. Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Wall Street Journal Prime Prime Rate [Member] Mortgages, notes and loans payable Debt Instrument [Line Items] Land, buildings and equipment and developments in progress pledged as collateral Pledged Assets, Other, Not Separately Reported on Statement of Financial Position New SIDs issued Secured Debt Long-term debt, gross Long-term Debt, Gross Debt instrument, unamortized discount (premium), net Debt Instrument, Unamortized Discount (Premium), Net Interest rate margin (as a percent) Debt Instrument, Basis Spread on Variable Rate Repayments of lines of credit Repayments of Lines of Credit Number of extension options Debt Instrument, Number of Extension Options Represents the number of extension options available pertaining to a debt instrument. Derivative fixed interest rate Derivative, Fixed Interest Rate Debt instrument, LIBOR cap Debt Instrument, LIBOR Cap Debt Instrument, LIBOR Cap Debt instrument, LIBOR floor Debt Instrument, LIBOR Floor Debt Instrument, LIBOR Floor Repayments of long-term debt Long-term line of credit Long-term Line of Credit Joint venture debt guaranteed Variable Interest Entity, Consolidated, Joint Venture Debt, Guarantee Amount Variable Interest Entity, Consolidated, Joint Venture Debt, Guarantee Amount Increase in joint venture debt guaranteed Variable Interest Entity, Consolidated, Joint Venture Debt, Increase (Decrease) Guarantee Amount Variable Interest Entity, Consolidated, Joint Venture Debt, Increase (Decrease) Guarantee Amount Term of extension option Debt Instrument, Extension Option, Term Debt Instrument, Extension Option, Term Effective interest rate (as a percent) Debt Instrument, Interest Rate, Effective Percentage 2019 (excluding the nine months ended September 30, 2019) Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year 2020 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years 2021 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years 2022 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years 2023 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years Thereafter Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter Total Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Equity Method Investments and Joint Ventures [Abstract] Summary of investments in real estate and other affiliates Real Estate Investment Financial Statements, Disclosure [Table Text Block] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Employees Directors and Consultants Stock Options Employees Directors And Consultants Stock Options [Member] An arrangement whereby an employee, member of the Board of Directors or consultants are entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement. Antidilutive securities excluded from computation of diluted earnings per share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive securities excluded from computation of diluted earnings per share (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Reconciliation of Assets from Segment to Consolidated [Table] Reconciliation of Assets from Segment to Consolidated [Table] Corporate Reconciliation of total segment assets to total assets Segment Reporting, Asset Reconciling Item [Line Items] Assets RECENT AND PENDING TRANSACTIONS Business Combination Disclosure [Text Block] SEGMENTS Segment Reporting Disclosure [Text Block] Summary of fair value of the Company's derivative financial instruments Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Summary of effect of the Company's derivative financial instruments on the Condensed Consolidated Statements of Operations Derivative Instruments, Gain (Loss) [Table Text Block] Operating lease cost Operating Lease, Cost Variable lease costs Variable Lease, Cost Sublease income Sublease Income Net lease cost Lease, Cost Schedule of Other Assets and Liabilities [Table] Schedule of Other Assets and Liabilities [Table] Information related to significant components of other assets and liabilities of the entity. Senior Notes, 5.375% Senior Notes, 5.375% [Member] Senior Notes, 5.375% [Member] Senior Notes Senior Notes [Member] Finite Lived Intangible Assets and Liabilities, by Major Class [Axis] Finite Lived Intangible Assets and Liabilities, by Major Class [Axis] Information by major type or class of finite Lived intangible assets or liabilities. Finite Lived Intangible Assets and Liabilities, by Major Class [Domain] Finite Lived Intangible Assets And Liabilities By Major Class [Domain] The major class of finite Lived intangible assets and liabilities. In-place leases Leases, Acquired-in-Place [Member] Above-market tenant leases Ground Leases Above Market [Member] Ground leases acquired as part of a real property acquisition at above market lease rate. Interest rate swap derivative assets Ground Leases Below Market [Member] Ground leases acquired as part of a real property acquisition at below market lease rate. Other assets and liabilities Other Assets and Liabilities [Line Items] Prepaid Expenses and Other Assets Prepaid Expense and Other Assets [Abstract] Condominium inventory Condominium Inventory Condominium Inventory Straight-line rent Straight Line Rent Asset The asset that represents the cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively. Intangibles Other Intangible Assets, Net Prepaid expenses Prepaid Expense Special Improvement District receivables Special Improvement District Receivable Represents the carrying amount of the reimbursement receivable for principal paid on Special Improvement District bonds including interest. Security and escrow deposits Deposit Assets Equipment, net of net of accumulated depreciation of $9.6 million and $8.3 million, respectively Property, Plant and Equipment, Other, Net Other Other Assets Tenant incentives and other receivables Other Receivables TIF receivable Value Added Tax Receivable Net carrying amount Finite-Lived Intangible Assets, Net Food and beverage and lifestyle inventory Food and Beverage and Lifestyle Inventory Food and Beverage and Lifestyle Inventory Federal income tax receivable Income Taxes Receivable Interest rate swap derivative assets Derivative Fair Value Of Derivative Interest Rate Swap Fair value, before effects of master netting arrangements, of an interest rate swap 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. Prepaid expenses and other assets, net Accumulated depreciation on other equipment Accumulated Depreciation Other Equipment Accumulated depreciation for other depreciable equipment. Decrease in prepaid expenses and other assets Increase (Decrease) in Prepaid Expense and Other Assets. The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows. Decrease in condominium inventory Increase (Decrease) In Condominium Inventory Increase (Decrease) In Condominium Inventory Decrease in below-market ground leases Increase (Decrease) Finite-Lived Intangibles, Net Increase (Decrease) Finite-Lived Intangibles, Net Accounts Payable and Accrued Liabilities [Abstract] Accounts Payable and Accrued Liabilities [Abstract] Construction payables Construction Payable Condominium deposit liabilities Accounts Payable and Accrued Expenses Condominium Deposits Represents the amount of condominium deposits, which is the component of accounts payable and accrued expenses. Deferred income Deferred Income Deferred Income Interest rate swap liabilities Tenant and other deposits Security Deposit Liability Accounts payable and accrued expenses Other Accounts Payable and Accrued Liabilities Accrued payroll and other employee liabilities Employee-related Liabilities Accrued real estate taxes Accrual for Taxes Other than Income Taxes Other Other Liabilities Accrued interest Interest Payable Straight-line ground rent liability Straight Line Rent Liability Straight-line Rent Liability Accounts payable and accrued expenses Decrease in accounts payable and accrued expenses Increase (Decrease) In Accounts Payable And Accrued Expenses Represents the increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. Decrease in condominium deposits liability Increase (Decrease) in Accounts Payable and Accrued Expenses Condominium Deposits Represents the increase (decrease) during the reporting period in the amount of obligations related to receipts from buyers of condominium deposits. Increase in interest rate swap derivative liabilities Increase (Decrease) In Interest Rate Swap Derivative Liabilities Increase (Decrease) In Interest Rate Swap Derivative Liabilities Increase in construction payables Increase (Decrease) in Construction Payables Decrease in straight-line ground rent liability Increase (Decrease) In Straight Line Rent Liability Increase (Decrease) In Straight Line Rent Liability Increase (decrease) accrued interest Increase (Decrease) Accrued Interest Increase (Decrease) Accrued Interest Increase (decrease) in tenant and other deposits related to increases in land sales deposits Increase (Decrease) in Security Deposits Decrease in accrued payroll and other employee liabilities Increase (Decrease) in Employee Related Liabilities Operating Lease Operating Lease Liabilities, Payments Due [Abstract] 2019 (excluding the nine months ended September 30, 2019) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total lease payments Lessee, Operating Lease, Liability, Payments, Due Less: imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Present value of lease liabilities Income Statement [Abstract] Statement [Table] Statement [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Condominium rights and unit sales Condominium Rights And Unit Sales [Member] Condominium Rights And Unit Sales [Member] Master Planned Communities land sales Master Planned Community Land Sales [Member] Master Planned Community Land Sales [Member] Hospitality revenues Hospitality Revenue [Member] Hospitality Revenue [Member] Builder price participation Builder Price Participation [Member] Builder Price Participation [Member] Other land revenues Other Land Revenue [Member] Other Land Revenue [Member] Other rental and property revenues Other Rental And Property Revenues [Member] Other Rental And Property Revenues [Member] Master Planned Communities cost of sales Real Estate, Sales [Member] Real Estate, Sales [Member] Master Planned Communities operations Real Estate, Operations [Member] Real Estate, Operations [Member] Statement [Line Items] Statement [Line Items] Revenues: Revenues [Abstract] Revenue Revenue from Contract with Customer, Excluding Assessed Tax Minimum rents Operating Lease, Lease Income, Lease Payments Minimum rents Operating Leases, Income Statement, Minimum Lease Revenue Tenant recoveries Operating Lease, Variable Lease Income Tenant recoveries Tenant Recoveries Tenant Recoveries Interest income from sales-type leases Sales-type Lease, Interest Income Total revenues Expenses: Costs and Expenses [Abstract] Cost of goods and services Cost of Goods and Services Sold Other property operating costs Other Cost and Expense, Operating Rental property real estate taxes Real Estate Tax Expense Rental property maintenance costs Cost of Property Repairs and Maintenance Hospitality operating costs Hospitality Expenses Represents the information pertaining to hospitality expenses. (Recovery) provision for doubtful accounts Provision for Doubtful Accounts Demolition costs Demolition Costs Represents expenses related to demolition of real estate properties. Development-related marketing costs Marketing Expense General and administrative General and Administrative Expense Depreciation and amortization Total expenses Other: Other Income and Expenses [Abstract] Gain on sale or disposal of real estate, net Other income (loss), net Total other Other Operating Income (Expense), Net Operating income Operating Income (Loss) Interest income Investment Income, Interest Equity in earnings from real estate and other affiliates Income before taxes Provision for income taxes Basic income per share (in dollars per share) Diluted income per share (in dollars per share) Investments in and Advances to Affiliates [Table] Investments in and Advances to Affiliates [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] The Metropolitan Downtown Columbia Metropolitan Downtown Columbia [Member] Represents The Metropolitan Downtown Columbia (d) Stewart Title of Montgomery County, TX Stewart Title Of Montgomery County Tx [Member] Represents Stewart Title of Montgomery County, TX Woodlands Sarofim 1 Woodlands Sarofim1 [Member] Represents the information pertaining to Woodlands Sarofim 1, a real estate affiliate of the entity. m.flats/TEN.M Parcel C [Member] Information pertaining to the Parcel C. The Summit Discovery Land Joint Venture [Member] Represents information pertaining to the Discovery Land Joint Venture, a real estate affiliate of the entity. Bar Wayo (Momofuku) Bar Wavo [Member] Bar Wavo [Member] Circle T Ranch and Power Center Circle T Ranch and Power Center [Member] Represents the information pertaining to Circle T, a real estate affiliate of the entity. HHMK Development H H M K Development L L C [Member] Represents the information pertaining to HHMK Development, LLC, a real estate affiliate of the entity. KR Holdings K R Holdings L L C [Member] Represents information pertaining to KR Holdings, LLC with whom the entity entered into a joint venture. Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Equity Method Investments Equity Method Investments [Member] Cost method investments Cost Method [Member] Cost Method [Member] Real Estate and Other Affiliates Investments in and Advances to Affiliates [Line Items] Investment in Real Estate and Other Affiliates Investments in and Advances to Affiliates, Balance [Abstract] Economic/Legal Ownership Equity Method Investment, Ownership Percentage Carrying Value Share of Earnings/Dividends Investment deficit position Investments In Affiliates Subsidiaries Associates And Joint ventures Liability Total investment liabilities in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. REAL ESTATE AND OTHER AFFILIATES Equity Method Investments and Joint Ventures Disclosure [Text Block] Derivative [Table] Derivative [Table] Settled Interest Rate Swap, One Settled Interest Rate Swap, One [Member] Settled Interest Rate Swap, One [Member] Settled Interest Rate Swap, Two Settled Interest Rate Swap, Two [Member] Settled Interest Rate Swap, Two [Member] Settled Interest Rate Swap, Three Settled Interest Rate Swap, Three [Member] Settled Interest Rate Swap, Three [Member] Settled Interest Rate Swap, Four Settled Interest Rate Swap, Four [Member] Settled Interest Rate Swap, Four [Member] Interest Rate Cap Interest Rate Cap [Member] Credit Risk Contract Credit Risk Contract [Member] Derivative [Line Items] Derivative [Line Items] Interest rate swap agreements settled Derivative, Agreements Settled Derivative, Agreements Settled Reduction in interest expense Notional amount Derivative Asset, Notional Amount Payment received from derivative settlement Termination fee Derivative Instrument, Termination Fee Derivative Instrument, Termination Fee Derivatives deferred effective portion of fair value change Derivative, Number Of Derivative Instruments, Deferred Effective Portion Of Fair Value Change Derivative, Number Of Derivative Instruments, Deferred Effective Portion Of Fair Value Change Derivative change in fair value recognition period Derivative Instrument, Change In Fair Value, Recognition Period Derivative Instrument, Change In Fair Value, Recognition Period Loss on derivative expected amount to be reclassified Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net Derivative liability fair value gross Derivative Liability, Fair Value, Gross Liability Weighted-average remaining lease term (years) Weighted Average Remaining Lease Term [Abstract] Weighted Average Remaining Lease Term [Abstract] Operating leases Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate Weighted Average Discount Rate [Abstract] Weighted Average Discount Rate [Abstract] Operating leases Operating Lease, Weighted Average Discount Rate, Percent Summary of mortgages, notes and loans payable Schedule of Long-term Debt Instruments [Table Text Block] Total Assets Equity Method Investment, Summarized Financial Information, Assets Total Liabilities Equity Method Investment, Summarized Financial Information, Liabilities Total Equity Equity Method Investment Summarized Financial Information, Equity Revenues Equity Method Investment, Summarized Financial Information, Revenue Net income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Gross Margin Equity Method Investment, Summarized Financial Information, Gross Profit (Loss) Lease cost Lease, Cost [Table Text Block] Operating lease liability maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of minimum rent payments Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block] Selling profit and interest income from sales-type leases Sales-type Lease, Lease Income [Table Text Block] Minimum rents associated with sales-type leases Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block] Summary of stock option plan activity Schedule of Stock Options Roll Forward [Table Text Block] Summary of restricted stock activity Share-based Compensation, Activity [Table Text Block] ACCUMULATED OTHER COMPREHENSIVE LOSS Comprehensive Income (Loss) Note [Text Block] Secured mortgages, notes and loans payable Secured Debt [Member] Special Improvement District bonds Interest Rate Collar Interest Rate Collar [Member] Interest Rate Collar [Member] Debt Instrument [Line Items] Fixed-rate debt Mortgages, notes and loans payable Unamortized bond issuance costs Unamortized Debt Issuance Expense Unamortized deferred financing costs Debt Issuance Costs, Net Total mortgages, notes and loans payable, net Amount of variable-rate debt swapped to fixed rate Derivative, Amount of Hedged Item REVENUE Revenue from Contract with Customer [Text Block] Remaining performance obligation Revenue, Remaining Performance Obligation, Amount Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Remaining performance obligation, expected timing of satisfaction period Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period Summary of AOCI Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Summary of the amounts reclassified out of AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] BASIS OF PRESENTATION AND ORGANIZATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Income Tax Disclosure [Abstract] INCOME TAXES Income Tax Disclosure [Text Block] IMPAIRMENT Asset Impairment Charges [Text Block] DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Derivative Instruments and Hedging Activities Disclosure [Text Block] Statement of Stockholders' Equity [Abstract] Interest rate swaps, tax (benefit) expense Capitalized swap interest, tax (benefit) Other Comprehensive Income Loss Capitalized Swap Interest On Developments Tax effect, net of reclassification adjustment, of the change in accumulated gain (loss) from settled derivative instruments for which the underlying interest is capitalized. Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Unconsolidated Properties Unconsolidated Properties [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] USAA USAA [Member] USAA [Member] Bar Wavo USAA Joint Venture USAA Joint Venture [Member] USAA Joint Venture [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Momofuku Momofuku [Member] Momofuku [Member] Secured debt real estate affiliates Secured Debt Real Estate Affiliates Real Estate Affiliates 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. Share of entity in secured debt Share of Entity in Secured Debt Represents the reporting entity's proportionate share in indebtedness secured by the properties owned by real estate affiliates as on balance sheet date. Number of variable interest entities in which entity is primary beneficiary Variable Interest Entity, Number of Entities Represents the number of variable interest entities. Recourse percentage Debt Instrument, Recourse Percentage Represents the percentage of recourse related to debt instrument. Facility amount Line of Credit Facility, Maximum Borrowing Capacity Carrying values of the assets associated with the operations of the consolidated VIEs Variable Interest Entity, Consolidated, Carrying Amount, Assets Carrying values of the liabilities associated with the operations of the consolidated VIEs Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Contribution of property Contribution of Property Fair value of property contributed Contribution Of Property, Fair Value Contribution Of Property, Fair Value Capital contribution to joint venture Capital Contribution to Joint Venture Capital contributed to joint venture to purchase a property. Joint venture capital obligations Capital Contributions, Joint Venture Capital Obligations Joint Venture Capital Obligations Equity ownership in joint venture Joint Venture Agreement, Equity Ownership Percentage Joint Venture Agreement, Equity Ownership Percentage Preferred return on capital Joint Venture, Preferred Return On Capital Joint Venture, Preferred Return On Capital Ownership interest Joint Venture Real Estate, Ownership Percentage Joint Venture Real Estate, Ownership Percentage Preferred return on capital of cash distribution Joint Venture, Preferred Return On Capital, Percent Of Cash Distributions Joint Venture, Preferred Return On Capital, Percent Of Cash Distributions SID bonds transferred to joint venture SID Bonds Transferred to Joint Venture Amount of SID bonds transferred to a Joint Venture. Transaction value of land contributed to joint venture Transaction Value Of The Land Contributed To Joint Venture Represents the amount of transaction value of land contributed to joint venture. Transactional value per acre of land contributed to joint venture Transactional Value Per Acre Of Land Contributed To Joint Venture The per acre value of the land contributed to a joint venture. Maximum contribution required to joint venture by co-venturer Maximum Contribution Required to Joint Venture by Co-Venturer Represents the maximum capital contribution required by the partner in a joint venture. Preferred return on capital Preferred Return on Capital Represents the percentage of preferred return on the capital of the entity. Cash distribution entitlement by the joint venture Cash Distribution Entitlement By The Joint Venture Represents information pertaining to entitlement of distribution by joint venture after receipt of capital contribution and preferred returns. Joint venture real estate, percentage funded Joint Venture Real Estate, Percentage Funded Joint Venture Real Estate, Percentage Funded Join venture real estate, remaining cash distribution percentage Join Venture Real Estate, Remaining Cash Distribution Percentage Join Venture Real Estate, Remaining Cash Distribution Percentage Total Minimum Rent Payments Operating Lease, Lease Income, Lease Payments, Excluding Amortization Operating Lease, Lease Income, Lease Payments, Excluding Amortization 2019 (excluding the nine months ended September 30, 2019) Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year 2020 Lessor, Operating Lease, Payments to be Received, Two Years 2021 Lessor, Operating Lease, Payments to be Received, Three Years 2022 Lessor, Operating Lease, Payments to be Received, Four Years 2023 Lessor, Operating Lease, Payments to be Received, Five Years Thereafter Lessor, Operating Lease, Payments to be Received, Thereafter Total Lessor, Operating Lease, Payments to be Received Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Condominium rights and unit sales Master Planned Communities land sales Hospitality revenues Builder price participation Other land revenues Other rental and property revenues Corporate revenues Corporation [Member] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Axis] Timing of Transfer of Good or Service [Domain] Timing of Transfer of Good or Service [Domain] Recognized at a point in time Transferred at Point in Time [Member] Recognized at a point in time and/or over time Transfer At Point In Time And Over Time [Member] Transfer At Point In Time And Over Time [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Total rental income Operating Lease, Lease Income Total rental income Rental Income Rental Income Accounting Standards Update 2014-09 Accounting Standards Update 2014-09 [Member] Accounting Standards Update 2017-12 Accounting Standards Update 2017-12 [Member] Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Accumulated Other Comprehensive (Loss) Income AOCI Attributable to Parent [Member] Treasury Stock Treasury Stock [Member] Total Stockholders' Equity Parent [Member] Noncontrolling Interest Noncontrolling Interest [Member] Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance at the beginning of the period (in shares) Shares, Outstanding Balance at the beginning of the period Balance at the beginning of the period (in shares) Treasury Stock, Common, Shares Interest rate swaps, net of tax Pension adjustment, net of tax Capitalized swap interest, net of tax Cumulative effect of new accounting principle in period of adoption Cumulative Effect of New Accounting Principle in Period of Adoption Repurchase of common shares (in shares) Stock Repurchased During Period, Shares Repurchase of common shares Stock Repurchased During Period, Value Deconsolidation of Associations of Unit Owners Noncontrolling Interest, Decrease from Deconsolidation Contributions to joint ventures Noncontrolling Interest, Increase From Contributions To Joint Venture Noncontrolling Interest, Increase From Contributions To Joint Venture Stock plan activity (in shares) Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock plan activity Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Balance at the end of the period (in shares) Balance at the end of the period Balance at the end of the period (in shares) Cover page. Document Type Document Type Document Quarterly Report Document Quarterly Report Document Fiscal Period Focus Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, Address Line One Entity Address, City or Town Entity Address, City or Town Entity Address, State or Province Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Title of 12(b) Security Title of 12(b) Security Trading Symbol Trading Symbol Security Exchange Name Security Exchange Name Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Document Fiscal Period Focus Document Fiscal Period Focus Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Document Fiscal Year Focus Document Fiscal Year Focus ACCOUNTING POLICIES AND PRONOUNCEMENTS New Accounting Pronouncements and Changes in Accounting Principles [Text Block] Effective tax rate (as a percent) Effective Income Tax Rate Reconciliation, Percent Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Operating leases remaining lease term Operating Lease, Remaining Lease Term Operating Lease, Remaining Lease Term Lease renewal term Lessee, Operating Lease, Renewal Term Lease termination period Lessee, Operating Lease, Termination Period Lessee, Operating Lease, Termination Period Average remaining term of lease Lessor, Operating Lease, Weighted Average Remaining Lease Term Lessor, Operating Lease, Weighted Average Remaining Lease Term Net investment in lease receivable Net Investment Lease Receivable Net Investment Lease Receivable Loans and leases receivable Sales-type Lease, Lease Receivable Sales-type lease, unguaranteed residual asset Sales-type Lease, Unguaranteed Residual Asset Transfer of financial assets accounted for as sales, amount derecognized Sales-Type Lease, Derecognized Developments Sales-Type Lease, Derecognized Developments Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Total Gain reclassified from accumulated other comprehensive loss to net income Pension adjustment Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] Terminated swap amortization Accumulated Gain (Loss), Net, Interest Rate Swap, Parent [Member] Accumulated Gain (Loss), Net, Interest Rate Swap, Parent [Member] Terminated swap amortization Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Other comprehensive income before reclassifications OCI, before Reclassifications, Net of Tax, Attributable to Parent Reclassifications Reclassification from AOCI, Current Period, Net of Tax, Attributable to Parent Adjustment related to adoption of ASU 2018-02 Adjustment related to adoption of ASU 2017-12 Net current-period other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Interest income from sales-type leases Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] $700 Million Loan Maturity September 2023 $700 Million Loan Maturity September 2023 [Member] $700 Million Loan Maturity September 2023 [Member] Interest rate cap Interest rate collar Derivative instruments not designated as hedging instruments Not Designated as Hedging Instrument [Member] Derivative instruments designated as hedging instruments Prepaid expenses and other assets, net Prepaid Expenses and Other Current Assets [Member] Fixed Interest Rate 2.50%, Maturing December 2019 Fixed Interest Rate2.50 Maturing December2019 [Member] Fixed Interest Rate 2.50%, Maturing December 2019 [Member] Fixed Interest Rate 1.50% To 2.50%, Maturing May 2019 Fixed Interest Rate 1.50% To 2.50%, Maturing May 2019 [Member] Fixed Interest Rate 1.50% To 2.50%, Maturing May 2019 [Member] Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020 Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020 [Member] Fixed Interest Rate 2.00% To 3.00%, Maturing May 2020 [Member] Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021 Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021 [Member] Fixed Interest Rate 2.25% To 3.25%, Maturing May 2021 [Member] Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022 Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022 [Member] Fixed Interest Rate 2.75% To 3.50%, Maturing April 2022 [Member] Fixed Interest Rate 2.96%, Maturing September 2023 Fixed Interest Rate 2.96 Maturing September 2023 [Member] Fixed Interest Rate 2.96 Maturing September 2023 [Member] Fixed Interest Rate 5.0% Maturing August 2019 Fixed Interest Rate 5.0 Maturing August 2019 [Member] Fixed Interest Rate 5.0 Maturing August 2019 [Member] Fair value of derivative instruments Derivatives, Fair Value [Line Items] Notional amount, liability Derivative Liability, Notional Amount Fixed interest rate Total fair value derivative assets Derivative Asset, Fair Value, Gross Asset