Buildings and improvements Investment Building and Building Improvements Schedule of fees charged to unconsolidated joint ventures Schedule of Revenues from Unconsolidated Joint Ventures and Third Party Managed Properties [Table Text Block] Tabular disclosure of revenue derived from management, development and leasing fees charged to unconsolidated joint ventures and third-party managed properties. Financing Arrangement Co-venture Arrangement Disclosure [Text Block] This text block represents complete disclosure with respect to co-venture arrangements. Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract] Outstanding obligations under construction agreements Construction Payable, Current Range [Domain] Statistical Measurement [Domain] Hudson Pacific Properties Hudson Pacific Properties [Member] Hudson Pacific Properties Below-Market Leases Below Market Lease [Abstract] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Contributions to unconsolidated joint ventures Payments to Acquire Interest in Joint Venture Distributions of income from unconsolidated joint ventures Proceeds from Equity Method Investment, Distribution Operating Leases Lessee, Operating Lease, Liability, Payment, Due [Abstract] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Due from affiliates Due from Affiliates Legal Entity [Axis] Legal Entity [Axis] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Accounting Policies [Abstract] Accounting Policies [Abstract] Cash flows from investing activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Unrecognized compensation cost of share and unit-based plans Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Marketable Securities Marketable Securities Joint Venture Corporate Joint Venture [Member] Debt premiums Debt Instrument, Unamortized Premium Allocated values of leases Acquired Finite-Lived Intangible Assets [Line Items] Depreciation expense Depreciation, Nonproduction Combined and condensed balance sheets of unconsolidated joint ventures Equity Method Investments, Summarized Financial Information Balance Sheet [Table Text Block] Disclosure of summarized balance sheet financial information for investments accounted for using the equity method of accounting. Expenses: Operating Expenses [Abstract] Depreciation and amortization Equity Method Investment, Summarized Financial Information, Depreciation and Amortization The current period expense charged against earnings for depreciation and amortization on long-lived, physical assets not used in production, and which are not intended for resale, reported by an equity method investment of the entity. Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Share-based Payment Arrangement [Abstract] Related parties Interest income (expense) Related party interest (income) expense Interest Income (Expense), Related Party Interest Income (Expense), Related Party Accrued development costs included in accounts payable and accrued expenses and other accrued liabilities Construction in Progress Expenditures Incurred but Not yet Paid Noncontrolling Interests Noncontrolling Interest Disclosure [Text Block] Additional Paid-in Capital Additional Paid-in Capital [Member] Common Stock, shares outstanding Common Stock, Shares, Outstanding 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures Conversion of Operating Partnership Units to common stock Conversion of Stock, Amount Converted Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Other assets Increase (Decrease) in Other Operating Assets Other Interest Expense, Other Interest expense Equity Method Investment, Summarized Financial Information, Interest Expense The cost of borrowed funds accounted for as interest that was charged against earnings during the period by an equity method investment of the entity. Accrued percentage rents Accrued Income Receivable [Member] Numerator for basic and diluted EPS—net income attributable to common stockholders Net Income (Loss) Available to Common Stockholders after Allocation to Participating Securities, Basic and Diluted Net Income (Loss) Available to Common Stockholders after Allocation to Participating Securities, Basic and Diluted Mortgage notes payable Secured Debt [Member] Chandler Freehold Freehold Raceway Mall and Chandler Fashion Center [Member] Represents the information pertaining to the Freehold Raceway Mall and Chandler Fashion Center properties. Debt Instrument [Axis] Debt Instrument [Axis] Expenses: Costs and Expenses [Abstract] Level 2 measurement Significant Other Unobservable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Less accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Distributions from unconsolidated joint ventures Distributions of Capital from Unconsolidated Entities and Other Cash inflows from unconsolidated entities and other. Westside Pavilion Westside Pavilion [Member] Represents the information pertaining to real estate property of the entity, Westside Pavilion. Stock options Share-based Payment Arrangement, Option [Member] 2021 Capital Leases, Future Minimum Payments Due in Three Years Swaps Interest Rate Swap [Member] Availability for additional borrowing Line of Credit Facility, Remaining Borrowing Capacity Statement [Table] Statement [Table] Number of agreements Derivative, Number of Instruments Held In-place lease values Finite-Lived Intangible Asset, Acquired-in-Place Leases Amount of additional borrowing Proceeds from Issuance of Debt Measurement Frequency [Axis] Measurement Frequency [Axis] Recourse mortgage notes Recourse Debt Recourse Debt Market rent per square foot Finance Leased Asset, Measurement Input Leases Lessor, Operating Leases [Text Block] Total assets Variable Interest Entity, Consolidated, Carrying Amount, Assets Changes in assets and liabilities, net of dispositions: Increase (Decrease) in Operating Capital [Abstract] 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three Interest (income) expense: Interest Expense [Abstract] Mortgage notes payable Schedule of Mortgage Notes Payable [Table Text Block] Tabular disclosure of details related to mortgage notes payable by the entity, including properties which are pledged as collateral, carrying amounts, maturities and interest rates. Total lease cost Lease, Cost Total assets Total assets Equity Method Investment, Summarized Financial Information, Assets Accumulated deficit Retained Earnings (Accumulated Deficit) Bank and Other Notes Payable Debt Disclosure [Text Block] Weighted average incremental borrowing rate, operating leases Operating Lease, Weighted Average Discount Rate, Percent Leasing expenses Operating Lease, Initial Direct Cost Expense, over Term Loss on sale Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal New Accounting Pronouncements or Change in Accounting Principle [Table] New Accounting Pronouncements or Change in Accounting Principle [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Document Quarterly Report Document Quarterly Report Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Leasing revenue - fixed payments Operating Leases, Income Statement, Minimum Lease Revenue Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Intangible assets: Finite-Lived Intangible Assets, Gross [Abstract] Payments on finance leases Finance Lease, Principal Payments Property improvements Payments to Develop Real Estate Assets Investment, Name [Axis] Investment, Name [Axis] Leasing revenue - variable payments Variable Lease, Income Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Employee stock purchases Stock Issued During Period, Value, Employee Stock Purchase Plan Schedule of variable interest entities Schedule of Variable Interest Entities [Table Text Block] Basic (in shares) Denominator for basic EPS—weighted average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Allocated value net Finite-Lived Intangible Assets, Net 2023 Capital Leases, Future Minimum Payments Due in Five Years Kings Plaza Shopping Center Kings Plaza Mortgage [Member] Mortgage note payable on the Kings Plaza property pledged as collateral. Risk free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Name of Property [Domain] Name of Property [Domain] Dispositions Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Collateral [Domain] Collateral [Domain] Cash flows from financing activities: Net Cash Provided by (Used in) Financing Activities [Abstract] Allocation of earnings to participating securities Undistributed Earnings (Loss) Allocated to Participating Securities, Basic and Diluted Undistributed Earnings (Loss) Allocated to Participating Securities, Basic and Diluted Compensation cost under share and unit-based plans Share-based Payment Arrangement, Expense Deferred tax assets Net deferred tax assets Deferred Tax Assets, Net ASSETS: Assets: Assets [Abstract] Notional Amount Derivative, Notional Amount Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Range [Axis] Statistical Measurement [Axis] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Unconsolidated Joint Ventures Unconsolidated Joint Ventures [Member] Represents unconsolidated joint ventures. Company's capital Company's capital Equity Method Investment, Underlying Equity in Net Assets Leasing expenses Operating Leases, Income Statement, Initial Direct Costs Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Change in fair value of financing arrangement obligation Liabilities, Fair Value Adjustment Loss on extinguishment of debt, net Gain (Loss) on Extinguishment of Debt Document Fiscal Year Focus Document Fiscal Year Focus Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Loan term Long-term Debt, Term Scenario [Axis] Scenario [Axis] Cash payments for interest, net of amounts capitalized Interest Paid, Excluding Capitalized Interest, Operating Activities Discontinued Operations and Disposal Groups [Abstract] Discontinued Operations and Disposal Groups [Abstract] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Amortization of ROU assets Finance Lease, Right-of-Use Asset, Amortization Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Adjustment of noncontrolling interests in Operating Partnership Noncontrolling Interest, Increase from Subsidiary Equity Issuance Fashion Outlets of San Francisco Fashion Outlets of San Francisco [Member] Fashion Outlets of San Francisco [Member] Stock Units Stock Units [Member] Stock units as awarded by an entity to their employees as a form of incentive compensation. Entity Current Reporting Status Entity Current Reporting Status Unconsolidated Joint Ventures and Third Party Managed Properties Unconsolidated Joint Ventures and Third Party Managed Properties [Member] Represents unconsolidated joint ventures and third-party properties that engage the entity to manage their operations. Entity Emerging Growth Company Entity Emerging Growth Company Accumulated Deficit Retained Earnings [Member] Fashion Outlets of Niagara Falls USA Fashion Outlets at Niagara Mortgage [Member] Mortgage note payable on the Fashion Outlets at Niagara pledged as collateral, bearing interest at 6.46 percent and maturing in 2016. PPR Portfolio Pacific Premier Retail LLC [Member] Pacific Premier Retail LLC [Member] Net cash provided by investing activities Net Cash Provided by (Used in) Investing Activities Diluted (in dollars per share) Earnings Per Share, Diluted Related Party Transaction [Axis] Related Party Transaction [Axis] Other assets Other Assets [Member] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Line of credit, average interest rate Line of Credit Facility, Interest Rate During Period 2021 Lessor, Operating Lease, Payments to be Received, Rolling Year Two Securities excluded from Diluted EPS (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Balance Sheet Location [Axis] Balance Sheet Location [Axis] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] 2020 Lessor, Operating Lease, Payments to be Received, Next Rolling Twelve Months Receivable Type [Axis] Receivable Type [Axis] Tenant improvements Tenant Improvements Construction in progress Development in Process New loan Additional borrowing SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages Kings Plaza Shopping Center Kings Plaza Shopping Center [Member] Kings Plaza Shopping Center Shopping center and operating expenses Equity Method Investment, Summarized Financial Information, Cost of Real Estate Revenue This element represents the total of the costs related to real estate revenues reported for the period by an equity method investment of the entity. Total undiscounted rental payments Lessee, Operating Lease, Liability, Payments, Due Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Entity [Domain] Entity [Domain] Reconciliation of numerator and denominator used in computation of earnings per share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Amortization of share and unit-based plans Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture Land Land [Member] Towne Mall Towne Mall Mortgage [Member] Mortgage note payable on the Towne Mall property pledged as collateral. 2023 Operating Leases, Future Minimum Payments, Due in Five Years Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Effective interest rate Derivative, Swaption Interest Rate Increase (Decrease) in Stockholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Entity Address, State or Province Entity Address, State or Province Conversion of noncontrolling interests to common shares (in shares) Stock Issued During Period, Shares, Conversion of Units Total equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Summary of activity of non-vested LTIP Units, stock awards, phantom stock and stock units Share-based Payment Arrangement, Option, Activity [Table Text Block] Line of Credit Line of Credit [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Promenade at Casa Grande Promenade at Casa Grande [Member] Represents the information pertaining to real estate property of the entity, Promenade at Casa Grande. Additional borrowings Note Payable, Maximum Additional Borrowing Note Payable, Maximum Additional Borrowing First vesting period Share-based Payment Arrangement, Tranche One [Member] Equipment and furnishings Fixtures and Equipment, Gross Lease liabilities Operating and Finance Lease, Liability Operating and Finance Lease, Liability Subsequent Event Type [Axis] Subsequent Event Type [Axis] Derivative Instruments and Hedging Activities Derivative Instruments and Hedging Activities Disclosure [Text Block] Allocated values of above-market leases and below-market leases Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block] Payment on finance arrangement obligation Distributions, pro rata share of the excess loan proceeds Joint Venture, Distributions in Excess of Loan Proceeds Joint Venture, Distributions in Excess of Loan Proceeds Equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] SanTan Village Regional Center San Tan Village Regional Center Mortgage [Member] Mortgage note payable on the SanTan Village Regional Center property pledged as collateral. Adoption of New Lease Standard New Accounting Pronouncements, Policy [Policy Text Block] Net income attributable to the Company Net Income (Loss) Available to Common Stockholders, Basic Document Transition Report Document Transition Report South Park Mall South Park Mall [Member] Represents the information pertaining to real estate property of the entity, South Park Mall. Property, net Equity Method Investment, Summarized Financial Information, Real Estate Investment Property, Net The net book value of real estate investment property reported by an equity method investment of the entity. Investments in unconsolidated joint ventures Investments in unconsolidated joint ventures Equity Method Investments, Net The carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee, net of the liability for distributions received in excess of the entity's investment. Vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Summary of lease costs Lease, Cost [Table Text Block] Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table] Schedule of Subsidiary of Limited Liability Company or Limited Partnership [Table] Vesting [Domain] Vesting [Domain] Less accumulated amortization Accumulated Amortization Deferred Costs and Finite-lived Intangible Assets The accumulated amount of amortization related to deferred costs capitalized at the end of the reporting period and finite-lived intangible assets. 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] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table] Interest rate spread over basis Debt Instrument, Basis Spread on Variable Rate Net (loss) income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Interest rate cap/swap agreements Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Carrying Amount of Mortgage Notes, Other Secured Debt Nonrelated Party Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations such as mortgage loans. Deferred financing costs Payments of Financing Costs Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Loss on sale or write down of assets, net Gain (Loss) on Sale or Write Down of Assets Gain (Loss) on Sale or Write Down of Assets Granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Other liabilities Equity Method Investment, Summarized Financial Information, Other Liabilities The aggregate carrying amount of other liabilities not separately disclosed, reported by an equity method investment of the entity. Distributions of the partner's share of net income Income (Loss) from Joint Venture Income (Loss) from Joint Venture Tenant and other receivables, net Accounts and Financing Receivable, after Allowance for Credit Loss Related Party Transaction [Line Items] Related Party Transaction [Line Items] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Conversion rate of shares Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Other than Options, Conversion Rate Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments, Other than Options, Conversion Rate Amortization of share and unit-based plans Share-based Payment Arrangement, Noncash Expense Property area (in square feet) Area of Real Estate Property Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Bank and other notes payable Convertible Debt, Line of Credit and Other Notes Payable Includes the current and noncurrent portions, carrying amount of debut identified as being convertible into another form of financial instrument, the carrying values of obligations drawn from a line of credit, and other notes payable. Above-market leases Finite Lived Intangible Asset above Market Leases Gross carrying amount before accumulated amortization as of the balance sheet date of the intangible asset for leases acquired as part of a real property acquisition at above market lease rate. Total liabilities and partners' capital Equity Method Investment, Summarized Financial Information, Liabilities and Equity Interest rate cap/swap agreements Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Effective interest rate Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Noncontrolling Interests Noncontrolling Interest [Member] Less net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Operating Partnership Variable Interest Entity, Primary Beneficiary [Member] LIBOR Rate Derivative, Variable Interest Rate 2022 Lessor, Operating Lease, Payments to be Received, Rolling Year Three Tenant and other receivables Increase (Decrease) in Accounts Receivable Interest on lease liabilities Finance Lease, Interest Expense Fashion District Philadelphia Fashion District Philadelphia [Member] Fashion District Philadelphia [Member] Effect of dilutive securities: Incremental Weighted Average Shares Attributable to Dilutive Effect [Abstract] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Amortization of premium on mortgage notes payable Amortization of Debt Discount (Premium) Entity Address, City or Town Entity Address, City or Town Co-Venture Arrangement [Abstract] Co-Venture Arrangement [Abstract] Co-Venture Arrangement [Abstract] Entity Filer Category Entity Filer Category Notes Receivable Notes Receivable [Member] Total undiscounted rental payments Operating Leases, Future Minimum Payments Due Other assets Equity Method Investment, Summarized Financial Information, Other Assets The aggregate carrying amount of other assets not separately disclosed, reported by an equity method investment of the entity. Finance lease liabilities Total lease liabilities Finance Lease, Liability Convertible non-participating preferred units Preferred Nonparticipating Convertible Units [Member] Represents convertible non-participating units or equivalent units of ownership interest in an LLC or LP. Components of leasing revenue Operating Lease, Lease Income [Table Text Block] Leasing commissions and legal costs Finite-lived Intangible Asset Leasing Commissions and Legal Costs Gross carrying amount before accumulated amortization as of the balance sheet date of capitalized leasing commissions and lease-related legal costs. Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] Affiliated Entity Affiliated Entity [Member] Development and leasing fees Development and Leasing Fees [Member] Development and Leasing Fees [Member] Subsequent Event [Table] Subsequent Event [Table] Comprehensive income attributable to the Company Comprehensive Income (Loss), Net of Tax, Attributable to Parent Statement [Line Items] Statement [Line Items] Disposition of property in exchange for investments in unconsolidated joint ventures Proceeds received in disposition of property Noncash or Part Noncash Divestiture, Amount of Consideration Received 2019 Capital Leases, Future Minimum Payments, Remainder of Fiscal Year Entity Registrant Name Entity Registrant Name 2021 Finance Lease, Liability, Payments, Due Year Three Non-cash investing and financing transactions: Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract] Authorized repurchase amount Stock Repurchase Program, Authorized Amount Other Real Estate, Other [Member] Assets measured on a nonrecurring basis Fair Value Measurements, Nonrecurring [Table Text Block] Employee stock purchases (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Straight-line rent and amortization of above and below market leases Straight Line Rent Adjustments and Amortization of above and below Market Leases Straight Line Rent Adjustments and Amortization of above and below Market Leases Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Amendment Flag Amendment Flag Award Date [Domain] Award Date [Domain] Leasing expenses Equity Method Investment, Summarized Financial Information, Leasing Expense Equity Method Investment, Summarized Financial Information, Leasing Expense Other comprehensive income: Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Other assets Other Assets, Miscellaneous City Area Code City Area Code Costs related to shareholder activism Unsolicited Tender Offer Costs Financing arrangement activity Financing Arrangement [Table Text Block] Financing Arrangement [Table Text Block] Vesting [Axis] Vesting [Axis] Allowance for doubtful accounts Allowance for Doubtful Accounts, Premiums and Other Receivables Entity Central Index Key Entity Central Index Key Proceeds from sale Proceeds from Sale of Real Estate Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Contribution from noncontrolling interests Proceeds from Noncontrolling Interests ASU 2016-02 Accounting Standards Update 2016-02 [Member] Balance Sheet Location [Domain] Balance Sheet Location [Domain] LTIP Units Long Term Incentive Plan [Member] Long-term incentive plan. Units Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Revolving line of credit Line of Credit Facility, Maximum Borrowing Capacity 2020 Capital Leases, Future Minimum Payments Due in Two Years Basis adjustment Equity Method Investment, Difference Between Carrying Amount and Underlying Equity Number of management companies (in entities) Number of Real Estate Management Companies Represents the number of management companies through which the entity provides property management, leasing and redevelopment for its real estate portfolio. Common stock, shares authorized Common Stock, Shares Authorized Distributions in excess of investments in unconsolidated joint ventures Liabilities—Distributions in excess of investments in unconsolidated joint ventures Investments in Unconsolidated Joint Ventures. The carrying amount of liabilities resulting from investments in unconsolidated real estate and joint ventures not separately presented as of the balance sheet date. Leasing revenue - fixed payments Operating Lease, Lease Income, Lease Payments Product and Service [Domain] Product and Service [Domain] Type of Adoption [Domain] Type of Adoption [Domain] Remaining authorized repurchase amount Stock Repurchase Program, Remaining Authorized Repurchase Amount Green Acres Commons Green Acres Commons [Member] Green Acres Commons [Member] Redemption of noncontrolling interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests 2023 Lessor, Operating Lease, Payments to be Received, Rolling Year Four Variable Rate [Domain] Variable Rate [Domain] Total operating expenses Equity Method Investment, Summarized Financial Information, Operating Expenses Generally recurring costs associated with normal operations for the period reported by an equity method investment of the entity. Entity Shell Company Entity Shell Company Mortgage notes payable Secured Debt Development, redevelopment, expansion and renovation of properties Payments to Acquire and Develop Real Estate Related Party Transactions Related Party Transactions Disclosure [Text Block] Total stockholders' equity Stockholders' Equity Attributable to Parent Market-indexed Long Term Incentive Plan, Market-based [Member] Long Term Incentive Plan, Market-based [Member] Original allocated value Finite-Lived Intangible Assets, Gross 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two Disposal Group Name [Domain] Disposal Group Name [Domain] Number of extension options Line of Credit Facility, Number of Extension Periods Line of Credit Facility, Number of Extension Periods Net income Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Write-down of assets Write-down of assets Impairment of Real Estate Deferred charges and other assets, gross Deferred Costs and Other Assets, Gross Sum of the gross carrying amounts before accumulated amortization of deferred costs that are expected to be recognized as a charge against future earnings plus assets not otherwise specified in the taxonomy. Stockholders' Equity Equity Component [Domain] Related Party Transactions [Abstract] Related Party Transactions [Abstract] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Percentage of loan assumed by third party Percentage of Loan Assumed by Third Party Portion of the loan assumed by a third party. Common Stock Common Stock [Member] Interest rate on debt Debt Instrument, Interest Rate, Stated Percentage Los Angeles Premium Outlets Los Angeles Premium Outlets [Member] Los Angeles Premium Outlets [Member] Property, net Real Estate Disclosure [Text Block] Two freestanding stores Two Freestanding Store [Member] Two Freestanding Store [Member] Receivable Type [Domain] Receivable [Domain] Unamortized deferred finance costs Debt Issuance Costs, Net Total leasing revenue Lease Income Property, Plant and Equipment [Abstract] Note receivable, interest rate Notes Receivable Interest Rate The stated interest rate on the note receivable. Other accrued liabilities Increase (Decrease) in Other Accrued Liabilities Below-Market Leases Below Market Lease [Member] Below Market Lease [Member] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Numerator Net Income (Loss) Available to Common Stockholders, Basic [Abstract] Fair value of mortgage notes payable Notes Payable, Fair Value Disclosure Total undiscounted rental payments Capital Leases, Future Minimum Payments Due Current Fiscal Year End Date Current Fiscal Year End Date Deferred compensation plan assets Deferred Compensation Plan Assets Total Stockholders' Equity Parent [Member] Amortization of difference between cost of investments and book value of underlying equity Equity Method Investment, Amortization of Difference Between Carrying Amount and Underlying Equity The item represents the amortization during the period of the difference between the amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and the amount of underlying equity in net assets the reporting Entity has in the investee. Schedule of derivative instruments Schedule of Derivative Instruments [Table Text Block] Equity Award [Domain] Award Type [Domain] Office building Office Building [Member] Real Estate [Abstract] Real Estate [Abstract] Outside partners' capital Equity Method Investment, Summarized Financial Information, Equity or Capital Other Interests The amount of equity (capital) of an equity method investment of the entity that is attributable to other ownership interests. Investments in Unconsolidated Joint Ventures Collaborative Arrangement Equity Method Investments and Joint Ventures Disclosure [Text Block] Fair value per LTIP unit (in dollars per share) 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 Additional paid-in capital Additional Paid in Capital, Common Stock Distributions declared, per share (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Provision for doubtful accounts Accounts Receivable, Credit Loss Expense (Reversal) Land Land Derivative Instrument [Axis] Derivative Instrument [Axis] Interest expense on borrowings from related party Equity Method Investment, Summarized Financial Information, Interest Expense Related Party The amount of interest expense on a debt or other obligation to a related party reported by an equity method investment of the entity. 2022 Capital Leases, Future Minimum Payments Due in Four Years Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Ownership percentage Joint Venture Ownership Percent Joint Venture Ownership Percent Subsidiary of Limited Liability Company or Limited Partnership [Line Items] Subsidiary of Limited Liability Company or Limited Partnership [Line Items] Share and Unit-Based Plans Share-based Payment Arrangement [Text Block] Schedule of deferred charges and other assets, net Schedule of Other Assets [Table Text Block] Adjustment to fair value of financing arrangement obligation Fair Value Adjustment of Finance Obligation Fair Value Adjustment of Finance Obligation Weighted average incremental borrowing rate, finance leases Finance Lease, Weighted Average Discount Rate, Percent Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities Mortgage and other notes payable Equity Method Investment, Summarized Financial Information, Secured Debt Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations reported by an equity method investment of the entity. Forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Award Date [Axis] Award Date [Axis] Net cash used in financing activities Net Cash Provided by (Used in) Financing Activities Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Balance at beginning of period (in shares) Balance at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Equity in income of unconsolidated joint ventures Equity in income of unconsolidated joint ventures Company's equity in net (loss) income Income (Loss) from Equity Method Investments Investment, Name [Domain] Investment, Name [Domain] Gain on sale of building Gain on sale Gain (Loss) on Sale of Properties Vintage Faire Mall Vintage Faire Mall Mortgage [Member] Mortgage note payable on the Vintage Faire Mall property pledged as collateral. 9/1/2019 September 1, 2019 [Member] September 1, 2019 Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Lease liabilities Total lease liabilities Operating Lease, Liability Leases Lessee, Finance Leases [Text Block] Proceeds from share and unit-based plans Proceeds from Stock Plans Summary of activity of SARs and stock options outstanding Share-based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block] PPR Portfolio Pacific Premier Retail LP [Member] Represents Pacific Premier Retail LP, a joint venture in which the entity has made investment. Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] Debt, carrying value Long-term Debt, Gross The Macerich Partnership, L.P. The Macerich Partnership, L.P. [Member] Represents the information pertaining to real estate property of the entity, The Macerich Partnership, L.P. Note receivable Notes Receivable, Related Parties Balance at beginning of period (in shares) Balance at end of period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Finance Leases Finance Lease, Liability, Payment, Due [Abstract] Total liabilities Variable Interest Entity, Consolidated, Carrying Amount, Liabilities Mortgage loans payable on real estate Debt Instrument [Line Items] Debt Instrument [Line Items] Subsequent event Subsequent Event [Member] Proceeds from sale of assets Proceeds from Sale of Partnership Interests Other Assets and Discontinued Operations, Net Cash inflows from the sale of partnership interests, other assets, and discontinued operations. The Market at Estrella Falls The Market at Estrella Falls [Member] Represents the joint venture, The Market at Estrella Falls LLC. Ownership interest in operating partnership Noncontrolling Interest, Ownership Percentage by Parent Volatility Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Mortgage notes payable assumed in exchange for investments in unconsolidated joint ventures Notes Assumed Deferred rent receivable due to straight-line rent adjustments Deferred Rent Receivables, Net Name of Property [Axis] Name of Property [Axis] Assets Assets, Fair Value Disclosure Commitments and contingencies Commitments and Contingencies Schedule of Joint Ventures [Line Items] Schedule of Joint Ventures [Line Items] -- None. No documentation exists for this element. -- LIBOR London Interbank Offered Rate (LIBOR) [Member] Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Stockholders' Equity Note [Abstract] Stockholders' Equity Note [Abstract] Southridge Center Southridge Center [Member] Southridge Center [Member] Cover page. Cover page. Collateral [Axis] Collateral [Axis] Tenant and Other Receivables, net Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Related Party Transaction [Domain] Related Party Transaction [Domain] Shopping center and operating expenses Real Estate [Member] Total liabilities Liabilities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] 2021 Operating Leases, Future Minimum Payments, Due in Three Years Less imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Number of finance leases Finance Lease, Number of Leases Finance Lease, Number of Leases Interest income, related party Interest Income, Related Party Trading Symbol Trading Symbol Basic (in dollars per share) Earnings Per Share, Basic Thereafter Finance Lease, Liability, Payments, Due after Year Five Thereafter Capital Leases, Future Minimum Payments Due Thereafter Document Period End Date Document Period End Date Above-Market Leases Above Market Leases [Member] Phantom Stock Units Phantom Share Units (PSUs) [Member] 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four Interest expense capitalized Interest Costs Capitalized Cumulative effect of adoption of ASC Cumulative effect adjustment Cumulative Effect of New Accounting Principle in Period of Adoption Value Share Based Compensation Arrangement by Share Based Payment Award Equity Instruments other than Options Weighted Average Exercise Price [Roll forward] -- None. No documentation exists for this element. -- Total expenses before interest Costs and Expenses before Interest, Total The sum of all costs of sales and operating expenses, excluding interest expense, for the period. Related parties note receivable, RED Consolidated Holdings, LLC Related Parties Note Receivable, RED Consolidated Holdings, LLC [Member] Related Parties Note Receivable, RED Consolidated Holdings, LLC [Member] Total revenues Equity Method Investment, Summarized Financial Information, Revenue Stock Options Share-based Compensation Arrangement by Share-based Payment Award, Stock Options, Outstanding [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Stock Options, Outstanding [Abstract] Revolving line of credit Revolving Credit Facility [Member] Common stock, $0.01 par value, 250,000,000 shares authorized, 141,370,725 and 141,221,712 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively Common Stock, Value, Issued Schedule of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Less imputed interest Finance Lease, Liability, Undiscounted Excess Amount Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Discount rate Financing Arrangement, Discount Rate Financing Arrangement, Discount Rate NML Northwestern Mutual Life [Member] Represents Northwestern Mutual Life ("NML"), considered a related party because it is a joint venture partner of the entity. Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Subsequent Events Subsequent Events [Text Block] Scenario [Domain] Scenario [Domain] Operating expenses Cost of Goods and Services Sold Dividend declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Total undiscounted rental payments Finance Lease, Liability, Payment, Due Summary of minimum rental payments Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block] Revenues: Revenues: Revenues [Abstract] Thereafter Lessor, Operating Lease, Payments to be Received, after Rolling Year Five Total Real Estate Investment Property, at Cost Leasing revenue Total leasing revenue Operating Leases, Income Statement, Lease Revenue Total assets Assets Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest (Loss) gain on sale or write down of assets, net (Loss) gain on sale or write down of assets, net Loss on sale of assets Gain (Loss) on Sale of Assets and Asset Impairment Charges Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] Weighted average remaining lease term, finance leases Finance Lease, Weighted Average Remaining Lease Term Document Fiscal Period Focus Document Fiscal Period Focus Deferred Deferred Income Tax Expense (Benefit) Document Type Document Type Tysons Tower Tysons Tower [Domain] Tysons Tower Freehold Raceway Mall Freehold Raceway Mall [Member] Represents the information pertaining to real estate property of the entity, Freehold Raceway Mall. Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Tax Identification Number Entity Tax Identification Number Due from affiliates Increase (Decrease) Due from Affiliates 2023 Finance Lease, Liability, Payments, Due Year Five Income Statement [Abstract] Income Statement [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Number of trading days used to calculate redemption value Minority Interest, Redemption Value Basis Number of Trading Days Minority Interest, Redemption Value Basis Number of Trading Days Terminal capitalization rate Financing Arrangement, Terminal Capitalization Rate Financing Arrangement, Terminal Capitalization Rate Amortization expense for intangible assets Amortization of Intangible Assets Total expenses Costs and Expenses Restricted cash Restricted Cash, Current Other accrued liabilities Other Accrued Liabilities Entity Interactive Data Current Entity Interactive Data Current Mortgage Notes Payable Mortgage Notes Payable Disclosure [Text Block] Share and unit-based compensation plans (in share) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Income tax (expense) benefit Income tax expense (benefit) Total income tax (expense) benefit Income Tax Expense (Benefit) Green Acres Mall Green Acres Mall Mortgage [Member] Green Acres Mall Mortgage [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fresno Fashion Fair Fresno Fashion Fair [Member] Represents the information pertaining to real estate property of the entity, Fresno Fashion Fair. 2019 Operating Leases, Future Minimum Payments, Remainder of Fiscal Year Summarizes of minimum future rental payments required Lessee, Operating Lease, Liability, Maturity [Table Text Block] Distributions declared Dividends, Common Stock, Cash 2022 Finance Lease, Liability, Payments, Due Year Four Components of property Schedule of Real Estate Properties [Table Text Block] Investments in unconsolidated joint ventures Assets—Investments in unconsolidated joint ventures Equity Method Investments Finance lease costs: Lease, Finance Cost [Abstract] Lease, Finance Cost Payments on mortgages, bank and other notes payable Repayment of Long-term Debt, Long-term Lease Obligation, and Capital Security REIT general and administrative expenses General and Administrative Expense Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Property, net Real Estate Investment Property, Net [Member] Real Estate Investment Property, Net [Member] Local Phone Number Local Phone Number Schedule of Loss (Gain) on Sale or Write down of Assets Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block] Loss on extinguishment of debt, net Gains (Losses) on Extinguishment of Debt, Including Penalties Gains (Losses) on Extinguishment of Debt, Including Penalties Related Party [Axis] Related Party [Axis] Total liabilities and equity Liabilities and Equity Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest 2020 Operating Leases, Future Minimum Payments, Due in Two Years Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Organization Nature of Operations [Text Block] Limited partnership interest of the operating partnership Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Financing arrangement obligation Financing Arrangement Obligation Financing Arrangement Obligation Property, net Property, net Real Estate Investment Property, Net Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Equity Components [Axis] Equity Components [Axis] Granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Variable Rate [Axis] Variable Rate [Axis] 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 Award Type [Axis] Award Type [Axis] Compensation cost under the share and unit-based plans Share-based Payment Arrangement, Cost by Plan [Table Text Block] Loans and Leases Receivable Disclosure [Abstract] Loans and Leases Receivable Disclosure [Abstract] Outside partner interest of the operating partnership Joint Venture Ownership Percent by Other Owners Joint Venture Ownership Percent by Other Owners Earnings per common share—attributable to common stockholders: EPS—net income attributable to common stockholders: Earnings Per Share, Basic and Diluted [Abstract] Service-based Long Term Incentive Plan, Service-based [Member] Long Term Incentive Plan, Service-based [Member] Original allocated value Below Market Lease, Gross Diluted (in shares) Denominator for diluted EPS—weighted average number of common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Diluted Schedule of LTIP Units Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] Maximum contingent borrowing capacity Line of Credit Facility, Maximum Contingent Borrowing Capacity Line of Credit Facility, Maximum Contingent Borrowing Capacity Debt, fair value Debt Instrument, Fair Value Disclosure Accounts receivable Accounts Receivable, before Allowance for Credit Loss Assumption of mortgage notes payable Proceeds from Divestiture of Business, Assumption of Debt Proceeds from Divestiture of Business, Assumption of Debt Fair Value Derivative, Fair Value, Net Common stock, shares issued Beginning balance (in shares) Ending balance (in shares) Common Stock, Shares, Issued Right-of-use assets, net ROU assets Operating Lease, Right-of-Use Asset Schedule of Joint Ventures [Table] Schedule of Joint Ventures [Table] A schedule providing information pertaining to the joint venture interests of the entity. Thereafter Operating Leases, Future Minimum Payments, Due Thereafter Reimbursement percent Reimbursement Percent, Collaborative Arrangement Reimbursement Percent, Collaborative Arrangement Queens Center Queens Center [Member] Represents the joint venture, Queens Center. 2020 Finance Lease, Liability, Payments, Due Year Two Units Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] 2024 Lessor, Operating Lease, Payments to be Received, Rolling Year Five Subsequent Events [Abstract] Subsequent Events [Abstract] Replacement collateral Collateral Pledged [Member] Balance at beginning of period (in dollars per share) Balance at end of period (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Percentage of loan assumed by third party Joint Venture Ownership Percentage Sold The percentage of ownership interest in the joint venture sold by the entity during the period. Tucson La Encantada Tucson La Encantada Mortgage [Member] Mortgage note payable on the Tucson La Encantada property pledged as collateral. Current Current Income Tax Expense (Benefit) Oaks, The The Oaks One Mortgage [Member] Mortgage note payable on the Oaks property pledged as collateral. Capitalized share and unit-based compensation costs Share-based Payment Arrangement, Amount Capitalized Fashion Outlets of Chicago Fashion Outlets of Chicago Mortgage [Member] Mortgage note payable on the Fashion Outlets of Chicago property pledged as collateral. Chandler Fashion Center Chandler Fashion Center [Member] Represents the information pertaining to real estate property of the entity, Chandler Fashion Center. Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Deferred charges and other assets, net Deferred charges and other assets, net Deferred charges and other assets, net Deferred Costs and Other Assets Danbury Fair Mall Danbury Fair Mall Mortgage [Member] Mortgage note payable on the Danbury Fair Mall property pledged as collateral. Accumulated amortization for intangible assets Less accumulated amortization Finite-Lived Intangible Assets, Accumulated Amortization Discontinued Operations: Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] 2019 Finance Lease, Liability, Payments, Remainder of Fiscal Year Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Proceeds from sale of building Proceeds from Sale of Buildings Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Entity Small Business Entity Small Business Entity File Number Entity File Number Ownership [Axis] Ownership [Axis] Leasing revenue Operating Lease, Lease Income Forecast Forecast [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Other Joint Ventures Other Joint Ventures [Member] Represents other joint ventures in which the entity participates, not specifically identified. Prasada Note Prasada Note [Member] Prasada Note [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] (Loss) gain on sale or write down of assets, net Equity Method Investment, Summarized Financial Information, Gain (Loss) on Sale and Remeasurement of Assets Represents the amount of gain or loss resulting from either the difference between the carrying value and the sales price or remeasurement of the carrying value of assets during the period, reported by an equity method investment of the entity. Repayments of debt Repayments of Secured Debt Product and Service [Axis] Product and Service [Axis] Depreciation and amortization Depreciation, Depletion and Amortization Chandler Fashion Center Chandler Fashion Center Mortgage [Member] Mortgage note payable on the Chandler Fashion Center property pledged as collateral. Proceeds from sale Proceeds from Divestiture of Businesses Components of tenant and other receivables, net Accounts, Notes, Loans and Financing Receivable [Line Items] Contingent liability under letters of credit Letters of Credit Outstanding, Amount Allocated value net Below Market Lease, Net Variable Interest Entities [Axis] Variable Interest Entities [Axis] Partnership unit Partnership Units [Member] Represents units or equivalent units of ownership interest in an LLC or LP. Combined and condensed statements of operations of unconsolidated joint ventures Equity Method Investments, Summarized Financial Information Statement of Operations [Table Text Block] Disclosure of summarized statement of operations information for investments accounted for using the equity method of accounting. Fair value measurements on a nonrecurring basis Fair Value, Nonrecurring [Member] Freehold Raceway Mall Freehold Raceway Mall Mortgage [Member] Mortgage note payable on the Freehold Raceway Mall property pledged as collateral. Total minimum rental payments Lessor, Operating Lease, Payments to be Received Other Equity Method Investment, Summarized Financial Information, Other Revenue The sum of all other revenue and income for the period reported by an equity method investment of the entity. Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period LIABILITIES AND EQUITY: Liabilities and partners' capital: Liabilities and Equity [Abstract] Conversion of noncontrolling interests to common shares Stock Issued During Period, Value, Conversion of Units Balance at beginning of period (in dollars per share) Balance at end of 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 Revenues Revenue from Contract with Customer, Excluding Assessed Tax Credit Facility [Domain] Credit Facility [Domain] Operating Leases Leases, Operating [Abstract] Income Taxes Income Tax Disclosure [Text Block] Ownership [Domain] Ownership [Domain] Interest expense, related party Related Party Transaction, Expenses from Transactions with Related Party 2022 Operating Leases, Future Minimum Payments, Due in Four Years 2019 Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year Los Angeles Premium Outlets, second stage Los Angeles Premium Outlets, Second Stage [Member] Los Angeles Premium Outlets, Second Stage [Member] Simon Property Group Simon Property Group [Member] Simon Property Group Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Weighted average number of common shares outstanding: Denominator Weighted Average Number of Shares Outstanding, Diluted [Abstract] Total interest expense Interest Expense Leasing Deferred Costs, Leasing, Gross Leasing revenue - variable payments Operating Leases, Income Statement, Contingent Revenue Victor Valley, Mall of Mall of Victor Valley Mortgage [Member] Mortgage note payable on the Mall of Victor Valley property pledged as collateral. Weighted average remaining lease term, operating leases Operating Lease, Weighted Average Remaining Lease Term Derivative Contract [Domain] Derivative Contract [Domain] Related Party [Domain] Related Party [Domain] Management Companies Management fees Management Service [Member] Proceeds from mortgages, bank and other notes payable Proceeds from Issuance of Long-term Debt and Capital Securities, Net Cap Interest Rate Cap [Member] Investments in unconsolidated joint ventures: Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract] Earnings Per Share [Abstract] Earnings Per Share [Abstract] 1/1/2019 January 1, 2019 [Member] January 1, 2019 [Member] Leases [Abstract] Leases [Abstract] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Exercised (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Subsequent events Subsequent Event [Line Items] Low end of range Minimum Minimum [Member] Fair value of outstanding line of credit Line of Credit Facility, Fair Value of Amount Outstanding In-place lease values, leasing commissions and legal costs Leases, Acquired-in-Place [Member] Interest rate cap/swap agreements Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Security Exchange Name Security Exchange Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Address, Address Line Two Entity Address, Address Line Two Entity Address, Address Line One Entity Address, Address Line One Operating lease costs Operating Lease, Cost Amortization of share and unit-based plans (in shares) Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture Credit Facility [Axis] Credit Facility [Axis] Other liabilities Other Liabilities [Member] Deferred leasing costs Increase (Decrease) in Deferred Leasing Fees Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Pacific View Pacific View Mortgage [Member] Mortgage note payable on the Pacific View property pledged as collateral. Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Contributions from noncontrolling interests Noncontrolling Interest, Increase from Contributions from Noncontrolling Interests Noncontrolling Interest, Increase from Contributions from Noncontrolling Interests Financing Arrangement Financing Arrangement [Member] Financing Arrangement [Member] Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Redemption value of outstanding OP Units not owned by the Company Minority Interest Redemption Value Represents the aggregate redemption value for the noncontrolling interest. Less accumulated amortization Below Market Lease, Accumulated Amortization Above-Market Leases Above Market Leases [Abstract] Above Market Leases [Abstract] Property Land, Buildings and Improvements [Member] Total revenues Revenues Santa Monica Place Santa Monica Place Mortgage [Member] Mortgage note payable on Santa Monica Place property pledged as collateral. Dividends and distributions Payments of Ordinary Dividends, Common Stock Earnings per Share (EPS) Earnings Per Share [Text Block] Accounts payable and accrued expenses Increase (Decrease) in Accounts Payable and Accrued Liabilities Redemption of noncontrolling interests Payments to Noncontrolling Interests Disposal Group Name [Axis] Disposal Group Name [Axis] Proceeds from repayment of notes receivable Proceeds from Collection of Notes Receivable Finance Leases Leases, Capital [Abstract] Deferred Charges and Other Assets, net Other Assets Disclosure [Text Block] Monthly Debt Service Debt Instrument, Periodic Payment Maximum High end of range Maximum [Member] Schedule of income tax benefit of TRSs Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Distributions in excess of the partner's share of net income Joint Venture, Distributions in Excess of Partner Share of Income (Loss) Joint Venture, Distributions in Excess of Partner Share of Income (Loss) Outstanding borrowings under the line of credit Long-term Line of Credit Real Estate [Domain] Real Estate [Domain] Title of 12(b) Security Title of 12(b) Security