Document and Entity Information Statement [Table] Class of Stock [Axis] Class Of Stock [Domain] Class of Stock [Domain] Common Class A [Member] Common stock Common Class B [Member] Class B common stock Statement [Line Items] Statement Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Current Fiscal Year End Date Entity Current Reporting Status Entity Filer Category Entity Common Stock, Shares Outstanding Entity Listing, Par Value Per Share Document Fiscal Year Focus Document Fiscal Period Focus Consolidated Balance Sheets Assets [Abstract] ASSETS: Real Estate Investment Property, at Cost Investment properties at cost Investment properties, at cost Real Estate Investment Property, Accumulated Depreciation Less - accumulated depreciation Real Estate Investment Property, Net Investment properties, net Cash and Cash Equivalents, at Carrying Value Cash and cash equivalents Accounts and Notes Receivable, Net Tenant receivables and accrued revenue, net Equity Method Investments. Investment in unconsolidated entities, at equity Our net investment in unconsolidated entities, at equity Equity investment Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Investment in Klepierre, at equity Deferred Costs and Other Assets Deferred costs and other assets Assets Total assets Liabilities [Abstract] LIABILITIES: Debt and Capital Lease Obligations Mortgages and unsecured indebtedness Total Mortgages and Other Indebtedness The summation of accounts payable, accrued expenses, intangibles, and deferred revenues. Accounts Payable, Accrued Expenses, Intangibles, and Deferred Revenues Accounts payable, accrued expenses, intangibles, and deferred revenues Cash Distributions and Losses in Partnerships and Joint Ventures, at Equity. Cash Distributions and Losses in Partnerships and Joint Ventures, at Equity Cash distributions and losses in partnerships and joint ventures, at equity Other Liabilities Other liabilities Liabilities Total liabilities Commitments and Contingencies Commitments and contingencies Represents the Limited Partners' Preferred Interest in Operating Partnership and Noncontrolling Redeemable Interests in Properties. Limited Partners' Preferred Interest in Operating Partnership and Noncontrolling Redeemable Interests in Properties and noncontrolling redeemable interests in properties Limited partners' preferred interest in the Operating Partnership Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] EQUITY: Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity All types, classes, and series of stock. Capital stock Capital stock (850,000,000 total shares authorized, $ 0.0001 par value, 238,000,000 shares of excess common stock, 100,000,000 authorized shares of preferred stock): Preferred Stock, Value, Issued Series J 8 3/8% cumulative redeemable preferred stock, 1,000,000 shares authorized, 796,948 issued and outstanding with a liquidation value of $ 39,847 Common Stock, Value, Issued Common stock Additional Paid in Capital Capital in excess of par value Retained Earnings (Accumulated Deficit) Accumulated deficit Partners' deficit Accumulated Other Comprehensive Income (Loss), Net of Tax Ending balance Beginning balance Accumulated other comprehensive loss Treasury Stock, Value Common stock held in treasury at cost, 3,543,043 and 3,540,754 shares, respectively Stockholders' Equity Attributable to Parent Total stockholders' equity Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interests Total noncontrolling interests reflected in equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Balance Balance Total equity Liabilities and Equity Total liabilities and equity The number of shares of capital stock authorized. Capital Stock, Shares Authorized Capital stock, total shares authorized Face amount or stated value of all types and classes of stock per share. Capital Stock, Par Value Per Share Capital stock, par value (in dollars per share) The number of shares of capital stock authorized less the number of shares of capital stock issued. Capital Stock, Shares of Excess Common Stock Capital stock, shares of excess common stock The number of shares of preferred stock authorized as part of the total number of shares of capital stock. Capital Stock, Authorized Shares of Preferred Stock Capital stock, authorized shares of preferred stock Preferred Stock, Dividend Rate, Percentage Preferred stock stated dividend rate percentage Preferred Stock, Shares Authorized Series J 8 3/8% cumulative redeemable preferred stock, shares authorized Preferred Stock, Shares Issued Series J 8 3/8% cumulative redeemable preferred stock, shares issued Preferred Stock, Shares Outstanding Series J 8 3/8% cumulative redeemable preferred stock, shares outstanding Preferred Stock, Liquidation Preference, Value Series J 8 3/8% cumulative redeemable preferred stock, liquidation value (in dollars) Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Issued Common stock, shares issued Common Stock, Shares, Outstanding Common stock, shares outstanding Treasury Stock, Shares Common stock held in treasury, shares Consolidated Statements of Operations and Comprehensive Income Revenues [Abstract] REVENUE: Operating Leases, Income Statement, Minimum Lease Revenue Minimum rent Operating Leases, Income Statement, Contingent Revenue Overage rent Tenant Reimbursements Tenant reimbursements Revenue, comprised of base and incentive revenue, from operating and managing another entity's business during the reporting period; plus revenues not otherwise specified. Management Fees and Other Revenues Management fees and other revenues Other Income Other income Revenues Total revenue Costs and Expenses [Abstract] EXPENSES: Direct Costs of Leased and Rented Property or Equipment Property operating Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Real Estate Tax Expense Real estate taxes Cost of Property Repairs and Maintenance Repairs and maintenance Marketing and Advertising Expense Advertising and promotion Provision for Loan, Lease, and Other Losses Provision for credit losses Home and Regional Office Costs. Home and Regional Office Costs Home and regional office costs General and Administrative Expense General and administrative Other Cost and Expense, Operating Other Costs and Expenses Total operating expenses Operating Income (Loss) OPERATING INCOME Interest Expense Interest expense Income Tax Expense (Benefit) Income and other taxes Income (Loss) from Equity Method Investments Income from unconsolidated entities Income from Unconsolidated Entities Share of net income, net of amortization of our excess investment In a business combination achieved in stages, this element represents the amount of gain or loss recognized by the entity as a result of re-measuring to fair value the equity interest in the acquiree it held before the business combination. Also includes the difference between the carrying value and the sales price for consolidated investment property and equity method investments. Acquisition of Controlling Interest Sale or Disposal of Assets and Interests in Unconsolidated Entities Gain or Loss Gain upon acquisition of controlling interests and sale or disposal of assets and interests in unconsolidated entities, net Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Consolidated income from continuing operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax Discontinued operations CONSOLIDATED NET INCOME Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Discontinued operations and gain on disposal Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Consolidated Net Income CONSOLIDATED NET INCOME Net Income (Loss) Attributable to Noncontrolling Interest Net income attributable to noncontrolling interests Dividends, Preferred Stock Preferred dividends Net Income (Loss) Available to Common Stockholders, Basic Net Income attributable to Common Stockholders - Basic NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS Earnings Per Share, Basic and Diluted [Abstract] BASIC AND DILUTED EARNINGS PER COMMON SHARE: Income (Loss) from Continuing Operations, Per Basic and Diluted Share Income from continuing operations (in dollars per share) Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic and Diluted Share Discontinued operations (in dollars per share) Earnings Per Share, Basic and Diluted Net income attributable to common stockholders (in dollars per share) Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax Unrealized gain (loss) on derivative hedge agreements Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax Net loss reclassified from accumulated other comprehensive loss into earnings Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Currency translation adjustments Gross appreciation or the gross loss in value of the total unsold securities at the end of an accounting period, after tax, plus other increases (decreases) in other comprehensive income not otherwise identified. Changes in Available for Sale Securities and Other Changes in available-for-sale securities and other Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Comprehensive income Comprehensive (Income) Loss, Net of Tax, Attributable to Noncontrolling Interest Comprehensive income attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive income attributable to common stockholders Consolidated Statements of Cash Flows Net Cash Provided by (Used in) Operating Activities [Abstract] CASH FLOWS FROM OPERATING ACTIVITIES: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile consolidated net income to net cash provided by operating activities - The cash flow add back for the noncash expense of depreciation and amortization. Depreciation and Amortization, Cash Flows Depreciation and amortization In a business combination achieved in stages, this element represents the amount of gain or loss recognized by the entity as a result of re-measuring to fair value the equity interest in the acquiree it held before the business combination. Also includes the difference between the carrying value and the sales price for consolidated investment property and equity method investments and discontinued operations. Acquisition of Controlling Interest Sale or Disposal of Assets and Interests in Unconsolidated Entities Gain or Loss Including Discontinued Operations Gain upon acquisition of controlling interests and sale or disposal of assets and interests in unconsolidated entities, net Straight Line Rent Straight-line rent This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee and discontinued operations. Income (Loss) From Equity Method Investments Including Discontinued Operations Equity in income of unconsolidated entities Proceeds from Equity Method Investment, Dividends or Distributions Distributions of income from unconsolidated entities Increase (Decrease) in Operating Capital [Abstract] Changes in assets and liabilities - Increase (Decrease) in Accounts and Notes Receivable Tenant receivables and accrued revenue, net Increase (Decrease) in Prepaid Expense and Other Assets Deferred costs and other assets The net change during the reporting period in accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities. Increase (Decrease) in Accounts Payable, Accrued Expenses, Intangibles, Deferred Revenues, and Other Liabilities Accounts payable, accrued expenses, intangibles, deferred revenues and other liabilities Net Cash Provided by (Used in) Operating Activities Net cash provided by operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] CASH FLOWS FROM INVESTING ACTIVITIES: Payments to Acquire Real Estate and Real Estate Joint Ventures Acquisitions Origination of Notes Receivable from Related Parties Funding of loans to related parties Payments for (Proceeds from) Productive Assets Capital expenditures, net Cash inflow and outflow from acquisitions and from consolidation and deconsolidation of properties. Cash from Acquisitions and Cash Impact of Property Consolidation and Deconsolidation Cash from acquisitions and cash impact from the consolidation and deconsolidation of properties Payments to Acquire Interest in Subsidiaries and Affiliates Investments in unconsolidated entities Payments to Acquire Investments Purchase of marketable and non-marketable securities Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital Distributions of capital from unconsolidated entities and other Net Cash Provided by (Used in) Investing Activities Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES: Represents proceeds from sales of common stock and other, net of transaction costs. Proceeds From Sale Of Common Stock And Other Proceeds from sales of common stock and other, net of transaction costs The cash outflow associated with purchase of noncontrolling interest in consolidated properties. Payments for Purchase of Noncontrolling Interest in Consolidated Properties Purchase of noncontrolling interest in consolidated properties and other Payments to Noncontrolling Interests Distributions to noncontrolling interest holders in properties Proceeds from Noncontrolling Interests Contributions from noncontrolling interest holders in properties Distributions from earnings to preferred unit holders. Distributions to Preferred Unit Holders, Financing Activities Preferred distributions of the Operating Partnership Payments of Ordinary Dividends Preferred dividends and distributions to stockholders Payments of Ordinary Dividends, Noncontrolling Interest Distributions to limited partners Proceeds from Issuance of Long-term Debt and Capital Securities, Net Proceeds from issuance of debt, net of transaction costs Repayments of Long-term Debt, Long-term Capital Lease Obligations, and Capital Securities Repayments of debt Proceeds from Debt, Net of Issuance Costs Amount of retained proceeds from recently completed unsecured debt and mortgage debt as part of the spin-off Net proceeds from issuance of debt related to Washington Prime properties, net Net Cash Provided by (Used in) Financing Activities Net cash provided by (used in) financing activities Cash and Cash Equivalents, Period Increase (Decrease) INCREASE/(DECREASE) IN CASH AND CASH EQUIVALENTS Cash and Cash Equivalents, at Carrying Value, Including Discontinued Operations CASH AND CASH EQUIVALENTS, end of period CASH AND CASH EQUIVALENTS, beginning of period Organization Nature of Operations [Text Block] Organization Basis of Presentation Describes an entity's accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. An entity also may describe its accounting treatment for intercompany accounts and transactions, minority interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary. Also discloses any material changes in classifications in the current financial statements compared to the classifications in the prior year's financial statements, including an explanation of the reason for the change and the areas impacted. Basis of Presentation and Consolidation Disclosure [Text Block] Basis of Presentation Significant Accounting Policies Significant Accounting Policies [Text Block] Significant Accounting Policies Per Share Data Earnings Per Share [Text Block] Per Share Data Investment in Unconsolidated Entities Cost and Equity Method Investments Disclosure [Text Block] Investment in Unconsolidated Entities Debt Debt Disclosure [Text Block] Debt Equity Stockholders' Equity Note Disclosure [Text Block] Equity Commitments and Contingencies. Commitments and Contingencies Disclosure [Text Block] Commitments and Contingencies Real Estate Acquisitions and Dispositions The entire disclosure of real estate acquisitions, disposals, and impairments. Real Estate Acquisitions, Disposals and Impairment Disclosure [Text Block] Real Estate Acquisitions and Dispositions Cash and Cash Equivalents, Policy [Policy Text Block] Cash and Cash Equivalents Investment, Policy [Policy Text Block] Marketable and Non-Marketable Securities Fair Value of Financial Instruments, Policy [Policy Text Block] Fair Value Measurements Disclosure of accounting policy for noncontrolling interests. Noncontrolling Interests [Policy Text Block] Noncontrolling Interests Stockholders' Equity, Policy [Policy Text Block] Accumulated Other Comprehensive Income (Loss) Derivatives, Policy [Policy Text Block] Derivative Financial Instruments New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements Discontinued Operations, Policy [Policy Text Block] Discontinued Operations Redeemable Noncontrolling Interest [Table Text Block] Schedule of carrying amount of noncontrolling interests A schedule disclosing a roll forward of noncontrolling interests. Movement in Minority Interest Roll Forward [Text Block] Schedule of rollforward of noncontrolling interests Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of changes in components of accumulated other comprehensive income (loss) net of noncontrolling interest Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Schedule of reclassifications out of accumulated other comprehensive income (loss) Schedule of Derivative Instruments [Table Text Block] Schedule of outstanding interest rate derivatives related to interest rate risk Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Summarized financial information for discontinued operations Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Schedule of computation of basic and diluted earnings per share Disclosure of summarized balance sheet financial information for investments accounted for using the equity method of accounting. Equity Method Investments, Summarized Financial Information, Balance Sheet [Table Text Block] Summary of equity method investments and share of income from such investments, balance sheet Disclosure of summarized statement of operations information for investments accounted for using the equity method of accounting. Equity Method Investments, Summarized Financial Information, Statement of Operations [Table Text Block] Summary of equity method investments and share of income from such investments, statement of operations Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block] Schedule of fair value of financial instruments and the related discount rate assumptions Represents information pertaining to LTIP units earned and aggregate grant date fair values adjusted for estimated forfeitures. Schedule of Share-based Compensation Arrangement by Share-based Payment Award, L T I P Units Earned and Aggregate Grant Date Fair Values Adjusted for Estimated Forfeitures [Table Text Block] Schedule of LTIP units earned and aggregate grant date fair values adjusted for estimated forfeitures Schedule of Stockholders Equity [Table Text Block] Reconciliation of carrying amounts of equity Schedule of Real Estate Properties [Table] Geographical [Axis] Segment Geographical [Domain] Geographical [Domain] United States and Puerto Rico locations. United States And Puerto Rico [Member] U.S. and Puerto Rico J [P] Japan K [R] South Korea C [A] Canada M [X] Mexico M [Y] Malaysia Europe [Member] Europe I [T] Italy Represents information pertaining to Austria. Austria [Member] Austria N [L] Netherlands G [B] United Kingdom Real Estate, Type of Property [Axis] Mortgage Loans On Real Estate Name Property Type [Domain] Real Estate [Domain]