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Cover [Abstract] Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest Accumulated Net Gain (Loss) from Cash Flow Hedges Including Portion Attributable to Noncontrolling Interest [Member] Document Type Document Type Award requisite service period Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period Weighted average interest rate Debt, Weighted Average Interest Rate Number of properties sold Real Estate, Number of Properties Sold Real Estate, Number of Properties Sold Interest rate, effective percentage Debt Instrument, Interest Rate, Effective Percentage Subsequent Event Subsequent Event [Member] Variable Rate [Domain] Variable Rate [Domain] Real estate, at cost Estimated Project Cost Real Estate Investment Property, at Cost Treasury stock acquired (in shares) Treasury Stock, Shares, Acquired Change from net income attributable to shareholders and transfers from noncontrolling interests 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Index Performance Shares - 1Q [Member] Leases [Abstract] Leases [Abstract] Debt Instrument [Axis] Debt Instrument [Axis] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Product and Service [Axis] Product and Service [Axis] Fixed Operating Lease, Cost Entity Small Business Entity Small Business Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] 2025 Lessor, Operating Lease, Payments to be Received, Six Years Lessor, Operating Lease, Payments to be Received, Six Years Principal amount outstanding Principal Amount Outstanding on Loans Securitized or Asset-backed Financing Arrangement Real Estate [Abstract] Real Estate [Abstract] Entity Filer Category Entity Filer Category Prepaid rent Disposal Group, Including Discontinued Operation, 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Ft. Area of Real Estate Property Peer Performance Shares - 1Q Peer Performance Shares - 1Q [Member] Peer Performance Shares - 1Q [Member] Remaining lease term Lessee, Operating Lease, Remaining Lease Term Lessee, Operating Lease, Remaining Lease Term Initial Cost Basis Business Combination, Consideration Transferred Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Less: accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation and Amortization Real Estate Investment Property, Accumulated Depreciation and Amortization General and administrative General and Administrative Expense Grant date fair value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Total Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Total Fair Value Trust preferred securities, net Unsecured Debt Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Accounts payable and other liabilities Disposal Group, Including Discontinued Operation, Accounts Payable Entity Interactive Data Current Entity Interactive Data Current Industrial assets acquired Number Of Industrial Assets Acquired Number Of Industrial Assets Acquired Common shares, shares issued (in shares) Common Stock, Shares, Issued Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Common shares, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Impairment charges Asset impairment charges Asset Impairment Charges Fair value of debt Debt Instrument, Fair Value Disclosure Mortgages and Notes Payable Mortgages and Notes Payable [Member] Mortgages and Notes Payable [Member] Repurchases to settle tax obligations Payment, Tax Withholding, Share-based Payment Arrangement and Issuance of Common Shares Payment, Tax Withholding, Share-based Payment Arrangement and Issuance of Common Shares Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Schedule of Line of Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Increase in additional paid-in-capital for redemption of noncontrolling OP units Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Net Allocation to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Fair Value by Measurement Frequency [Axis] Measurement Frequency [Axis] Schedule of Common Stock Granted Schedule of Stock by Class [Table Text Block] Earnings Per Share Earnings Per Share [Text Block] Award Type [Domain] Award Type [Domain] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Unsecured Revolving Credit Facility Revolving Credit Facility [Member] Atlanta, Georgia Atlanta, Georgia [Member] Atlanta, Georgia [Member] Hedging Designation [Axis] Hedging Designation [Axis] Ownership [Domain] Ownership [Domain] Gains on sales of properties Gain (Loss) on Sale of Properties, before Applicable Income Taxes Gain on sale of properties Aggregate gain on sale of properties Gain (Loss) on Sale of Properties Schedule of Long-term Debt Instruments Schedule of Long-term Debt Instruments [Table Text Block] The Company and Financial Statement Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Consolidated Entities [Axis] Consolidated Entities [Axis] Forfeiture of employee common shares Shares Granted, Value, Share-based Payment Arrangement, Forfeited Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Investments [Domain] Investments [Domain] 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] Total liabilities Total liabilities Liabilities Non-recourse mortgage loan Extinguishment of Debt, Amount Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Common shares, par value $0.0001 per share; authorized 400,000,000 shares, 255,232,130 and 254,770,719 shares issued and outstanding in 2020 and 2019, respectively Common Stock, Value, Issued Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Senior Notes Due 2024 Senior Notes Due 2024 [Member] Senior Notes Due 2024 [Member] Issuance of common shares and deferred compensation amortization, net Common Shares Issuance And Deferred Compensation Costs Amortization The cost of issuing common shares and the amortization of deferred compensation costs, net Redemption of noncontrolling OP units for common shares Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Partners' capital account (in units) Partners' Capital Account, Units Cash and cash equivalents Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Cash and Cash Equivalents, at Carrying Value Unvested share-based payment awards (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements Weighted-average common shares outstanding – basic (in shares) Weighted-average number of common shares outstanding - basic Weighted Average Number of Shares Outstanding, Basic Operating right-of-use assets, net Operating Lease, Right-of-Use Asset Investments in real estate under construction GAAP Investment Balance as of 3/31/2020 Construction in Progress, Gross Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Equity Components [Axis] Equity Components [Axis] Investments in non-consolidated entities Payments to Acquire Equity Method Investments Total shareholders’ equity Stockholders' Equity Attributable to Parent Property Operating Expense Operating Expense [Member] Payments to acquire interest in joint venture Payments to Acquire Interest in Joint Venture Dallas, Texas Dallas, Texas [Member] Dallas, Texas [Member] Land Land Fair Value Measurements Fair Value Disclosures [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Change in real estate deposits, net Payments for (Proceeds from) Deposits on Real Estate Acquisitions Lease, Cost Lease, Cost [Table Text Block] Proceeds from sale of joint venture Proceeds from Divestiture of Interest in Joint Venture Investment Type [Axis] Investment Type [Axis] Real estate - intangible assets Finite-Lived Intangible Assets, Gross Interest paid Interest Paid, Excluding Capitalized Interest, Operating Activities Series C Cumulative Convertible Preferred, liquidation preference $96,770; 1,935,400 shares issued and outstanding Preferred Stock, Value, Issued Variable Rate [Axis] Variable Rate [Axis] Number of real estate properties held for sale Number of Real Estate Properties, Held For Sale Number of Real Estate Properties, Held For Sale Security Exchange Name Security Exchange Name Document Information [Table] Document Information [Table] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Investment balance Equity Method Investments Authorized amount (in shares) Stock Repurchase Program, Number of Shares Authorized to be Repurchased Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Comprehensive income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Equity Component [Domain] Equity Component [Domain] Hedging Relationship [Domain] Hedging Relationship [Domain] Document Transition Report Document Transition Report Cash Flow Hedging Cash Flow Hedging [Member] Investments in and Advances to Affiliates [Table] Investments in and Advances to Affiliates [Table] Unamortized debt issuance costs Debt Issuance Costs, Net Other Significant Noncash Transactions [Table] Other Significant Noncash Transactions [Table] Unamortized debt issuance costs Debt Issuance Costs, Gross Net income attributable to common shareholders Net Income (Loss) Available to Common Stockholders, Diluted Consolidated Entities [Domain] Consolidated Entities [Domain] Building and Improvements Investment Building and Building Improvements Acquired During Period Investment Building and Building Improvements Acquired During Period 2025 Lessee, Operating Lease, Liability, Payments, Due Year Six Lessee, Operating Lease, Liability, Payments, Due Year Six Hedging Relationship [Axis] Hedging Relationship [Axis] Non-consolidated Real Estate Entity Non-consolidated Real Estate Entity [Member] Non-consolidated Real Estate Entity [Member] Income Statement [Abstract] Income Statement [Abstract] Interest rate swap liabilities Interest Rate Derivative Liabilities, at Fair Value Balance Sheet Location [Axis] Balance Sheet Location [Axis]