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Document Type Document Type Document Quarterly Report Document Quarterly Report Document Period End Date Document Period End Date Document Transition Report Document Transition Report Entity File Number Entity File Number Entity Registrant Name Entity Registrant Name Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Entity Tax Identification Number Entity Tax Identification Number Entity Address, Street Address Entity Address, Address Line One Entity Address, City Entity Address, City or Town Entity Address, State Entity Address, State or Province Entity Address, Postal Zip Code Entity Address, Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Title of each class Title of 12(b) Security Trading Symbol Trading Symbol Name of each exchange on which registered Security Exchange Name Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Filer Category Entity Filer Category Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Shell Company Entity Shell Company Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Entity Central Index Key Entity Central Index Key Amendment Flag Amendment Flag Document Fiscal Year Focus Document Fiscal Year Focus Document Fiscal Period Focus Document Fiscal Period Focus Current Fiscal Year End Date Current Fiscal Year End Date Equity Method Investments and Joint Ventures [Abstract] Schedule of Equity Method Investments [Table] Schedule of Equity Method Investments [Table] Investment, Name [Axis] Investment, Name [Axis] Investment, Name [Domain] Investment, Name [Domain] Managed Programs Managed Programs [Member] Managed Programs [Member] Investment in real estate Equity Investments in Real Estate [Member] Equity Investments in Real Estate [Member] Schedule Of Equity Method Investments Schedule of Equity Method Investments [Line Items] Distributions of Available Cash (Note 3) Proceeds from Equity Method Investment, Distribution Proportionate share of equity in earnings of equity investments Income (Loss) from Equity Method Investments, Net of Dividends or Distributions Amortization of basis differences on equity method investments in the Managed Programs Amortization Of Basis Differences The amortization associated with the basis differential of the special member's interest Equity in earnings of equity method investments in the Managed Programs and real estate Income (Loss) from Equity Method Investments Leases [Abstract] 2019 (remainder) Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year 2020 Lessee, Operating Lease, Liability, Payments, Due Year Two 2021 Lessee, Operating Lease, Liability, Payments, Due Year Three 2022 Lessee, Operating Lease, Liability, Payments, Due Year Four 2023 Lessee, Operating Lease, Liability, Payments, Due Year Five Thereafter Lessee, Operating Lease, Liability, Payments, Due after Year Five Total minimum lease payments Lessee, Operating Lease, Liability, Payments, Due Less: amount of lease payments representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Lease liability Operating Lease, Liability Segment Reporting [Abstract] Segment Reporting Segment Reporting Disclosure [Text Block] Related Party Transactions [Abstract] Schedule of Related Party Transactions, by Related Party [Table] Schedule of Related Party Transactions, by Related Party [Table] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Affiliated Entity Affiliated Entity [Member] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Asset management revenue Management Service [Member] Reimbursable costs from affiliates Revenue From Reimbursements [Member] Revenue From Reimbursements (Member] Structuring and other advisory revenue Structuring Revenue [Member] Structuring Revenue [Member] Related Party Transaction Related Party Transaction [Line Items] Gross contract revenue Revenue from Contract with Customer, Excluding Assessed Tax Distributions of Available Cash Distribution of Available Cash From Managed Reits The distributions from managed REITs during the period for services rendered. They are accounted for under the equity method. Interest income on deferred acquisition fees and loans to affiliates Interest Income, Related Party Revenue from related parties Revenue from Related Parties Schedule Of Segment Reporting Information By Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Real Estate Owned Real Estate Segment [Member] Owned Real Estate Segment [Member] Investment Management Investment Management Segment [Member] Investment Management Segment [Member] Segment Reporting Information Segment Reporting Information [Line Items] Assets Assets [Abstract] Total assets Assets Debt Disclosure [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Unsecured senior notes Senior Notes [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] 2.0% Senior Notes due 2023 Euro Senior Note 2.0% Due 2023 [Member] Euro Senior Note 2.0% Due 2023 [Member] 4.6% Senior Notes due 2024 Senior Note 4.6% due 2024 [Member] Senior Note 4.6% due 2024 [Member] 2.25% Senior Notes due 2024 Euro Senior 2.25% Due 2024 [Member] Euro Senior 2.25% Due 2024 [Member] 4.0% Senior Notes due 2025 Senior Note 4.0% Due 2025 [Member] Senior Note 4.0% Due 2025 2.250% Senior Notes due 2026 Euro Senior Note 2.250% Due 2026 [Member] Euro Senior Note 2.250% Due 2026 [Member] 4.25% Senior Notes due 2026 Senior Note 4.25% Due 2026 [Member] Senior Note 4.25% Due 2026 [Member] 2.125% Senior Notes due 2027 Euro Senior Note 2.125% Due 2027 [Member] Euro Senior Note 2.125% Due 2027 [Member] 3.850% Senior Notes due 2029 Senior Note 3.85% Due 2029 [Member] Senior Note 3.85% Due 2029 [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Senior Unsecured Notes Senior Notes [Abstract] Principal Amount Debt Instrument, Face Amount Price of Par Value (percentage) Undiscounted Rate on Debt Issued The effective rate on par for debt issued during the period. Original Issue Discount Debt Instrument, Unamortized Discount Effective Interest Rate (percentage) Debt Instrument, Interest Rate, Effective Percentage Coupon rate (percentage) Debt Instrument, Interest Rate, Stated Percentage Senior unsecured notes, net Senior Notes Deferred financing costs Debt Issuance Costs, Net Unamortized discount, net Debt Instrument, Unamortized Discount (Premium), Net Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Derivatives in Cash Flow Hedging Relationships Cash Flow Hedging [Member] Derivatives in Net Investment Hedging Relationships Net Investment Hedging [Member] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Foreign currency forward contracts Foreign Exchange Forward [Member] Interest rate swaps Interest Rate Swap [Member] Foreign currency collars Foreign Currency Collars [Member] Foreign Currency Collars [Member] Interest rate caps Interest Rate Cap [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] Equity method investments Equity Method Investments [Member] Derivative Instruments, Gain (Loss) Derivative Instruments, Gain (Loss) [Line Items] Amount of Gain (Loss) Recognized on Derivatives in Other Comprehensive Income Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification and Tax Receivables [Abstract] Schedule Of Financing Receivable Recorded Investment Credit Quality Indicator Table Abstract [Table] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable Information by Credit Quality Indicator [Axis] Internal Credit Assessment [Axis] Financing Receivable, by Credit Quality Indicator [Domain] Internal Credit Assessment [Domain] Internally Assigned Grade1-3 Internally Assigned Grade1 thru 3 [Member] Internally Assigned Grade1-3 Member Internally Assigned Grade 4 Internally Assigned Grade4 [Member] Internally Assigned Grade4 [Member] Internally Assigned Grade 5 Internally Assigned Grade5 [Member] Internally Assigned Grade5 [Member] Financing Receivable Recorded Investment [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Credit Quality Of Finance Receivables Credit Quality Of Finance Receivables [Abstract] Credit Quality Of Finance Receivables Number of tenants Number of tenants The number of tenants occupying the real estate properties owned as of the balance sheet date. Net investments in direct financing leases Financing Receivable, after Allowance for Credit Loss Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Balance Sheet Location [Axis] Balance Sheet Location [Axis] Balance Sheet Location [Domain] Balance Sheet Location [Domain] Direct financing lease Direct Financing Lease [Member] Direct Financing Lease [Member] Scenario [Axis] Scenario [Axis] Scenario [Domain] Scenario [Domain] Adjustments Scenario, Adjustment [Member] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Assets Leased to Others Assets Leased to Others [Member] Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] New York Times Company New York Times Company [Member] New York Times Company [Member] Related Party Transaction [Axis] Related Party Transaction [Axis] Related Party Transaction [Domain] Related Party Transaction [Domain] CPA REITs CPA Reits [Member] CPA Reits [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Finance Receivables Accounts and Financing Receivable, after Allowance for Credit Loss, Current and Noncurrent [Abstract] Interest income from direct financing leases Direct Financing Lease, Interest Income Interest income from direct financing leases Capital Leases, Income Statement, Direct Financing Lease Revenue Direct financing lease, number of properties reclassified Number of Real Estate Properties Direct financing lease, net investments reclassified Direct Financing Lease, Net Investment in Lease Increase to investments in real estate reclassified Real Estate Investment Property, Net Number of properties sold Number of Properties Sold The number of properties sold during the period. Decrease in direct financing lease related to sales Increase (Decrease) In Direct Financing Lease Increase (Decrease) In Direct Financing Lease Decrease in value of balance sheet item due to foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Bargain purchase option Lessor, Direct Financing Lease, Lessee Option To Purchase Underlying Asset, Amount Lessor, Direct Financing Lease, Lessee Option To Purchase Underlying Asset, Amount Real estate carrying value Real Estate Investments, Net Number of loans receivable Number Of Loans Receivable, Count Number Of Loans Receivable, Count Loans receivable Accounts and Financing Receivable, after Allowance for Credit Loss Loans receivable, sales type lease Loans Receivable, Sales Type Lease Loans Receivable, Sales Type Lease Proceeds from repayment of loan receivable Proceeds from Collection of Loans Receivable Deferred acquisitions fees payment period Deferred Acquisition Fees Receivable Payment Period Deferred Acquisition Fees Receivable Payment Period Long-term Debt, by Maturity Long-term Debt, Fiscal Year Maturity [Abstract] 2019 (remainder) Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2020 Long-term Debt, Maturities, Repayments of Principal in Year Two 2021 Long-term Debt, Maturities, Repayments of Principal in Year Three 2022 Long-term Debt, Maturities, Repayments of Principal in Year Four 2023 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter through 2031 Long-term Debt, Maturities, Repayments of Principal after Year Five Long term debt before unamortized discount Long Term Debt Before Unamortized Discount Including current and noncurrent portions, aggregate carrying amount of long-term borrowings, before unamortized discount, as of the balance sheet date. Unamortized discount, net Unamortized deferred financing costs Total scheduled debt principal payments Debt, Long-term and Short-term, Combined Amount Discontinued Operations and Disposal Groups [Abstract] Property Dispositions Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Risk Management and Use of Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash Total cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Hedging Designation [Axis] Hedging Designation [Axis] Hedging Designation [Domain] Hedging Designation [Domain] Derivatives Designated as Hedging Instruments Designated as Hedging Instrument [Member] Not Designated as Hedging Instruments Not Designated as Hedging Instrument [Member] Designated as Cash Flow Hedging Instruments Currency [Axis] Currency [Axis] All Currencies [Domain] All Currencies [Domain] USD United States of America, Dollars EUR Euro Member Countries, Euro GBP United Kingdom, Pounds Derivative [Line Items] Derivative [Line Items] Derivative Disclosure Derivative, Fair Value, Net [Abstract] Derivative number of instruments Derivative, Number of Instruments Held Notional Amount Derivative, Notional Amount Fair value Interest Rate Derivatives, at Fair Value, Net Schedule of Derivative Instruments in Statement of Financial Position, Fair Value Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block] Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance Derivative Instruments, Gain (Loss) [Table Text Block] Schedule of Derivative Instruments Schedule of Derivative Instruments [Table Text Block] CPA:17 – Global CPA 17 [Member] CPA 17 CPA:18 – Global Corporate Property Associates Eighteen [Member] Corporate Property Associates Eighteen [Member] CWI 1 CWI [Member] An affiliate is a party that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with the entity. CWI 2 Carey Watermark Incorporated Two [Member] Carey Watermark Incorporated Two [Member] CESH Carey European Student Housing Fund I, L.P. [Member] Carey European Student Housing Fund I, L.P. [Member] Revenue from related parties Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Statement Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Total W.P. Carey Stockholders Parent [Member] $0.001 Par Value Common Stock Common Stock [Member] Additional Paid-in Capital Additional Paid-in Capital [Member] Distributions in Excess of Accumulated Earnings Accumulated Distributions in Excess of Net Income [Member] Deferred Compensation Obligation Deferred Compensation Obligation [Member] Deferred Compensation Obligation Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Noncontrolling interests Noncontrolling Interest [Member] Statement Statement [Line Items] W.P. Carey Stockholders Increase (Decrease) in Stockholders' Equity [Roll Forward] Beginning equity balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Beginning equity balance, shares Common Stock, Shares, Outstanding Shares issued under ATM Program, net, value Stock Issued During Period, Value, New Issues Shares issued under ATM Program, net, shares Stock Issued During Period, Shares, New Issues Shares issued upon delivery of vested restricted share awards, value Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Shares issued upon delivery of vested restricted share awards, shares Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Shares issued upon purchases under employee share purchase plan, value Stock Issued During Period, Value, Employee Stock Purchase Plan Shares issued upon purchases under employee share purchase plan, shares Stock Issued During Period, Shares, Employee Stock Purchase Plans Deferral of vested shares, net APIC, Share-based Payment Arrangement, Other, Increase for Cost Recognition Amortization of stock-based compensation expense APIC, Share-based Payment Arrangement, Increase for Cost Recognition Contributions from noncontrolling interests Noncontrolling Interest, Increase from Subsidiary Equity Issuance Distributions to noncontrolling interests Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Dividends declared Dividends Net Income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Foreign currency translation adjustments Unrealized (loss) gain on derivative instruments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Unrealized loss on investments Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, after Tax Ending equity balance Ending equity balance, shares Dividends declared (in dollars per share) Common Stock, Dividends, Per Share, Declared Line of Credit Facility [Table] Line of Credit Facility [Table] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolving Credit Facility Revolving Credit Facility [Member] Delayed Draw term loan Delayed Draw Term Loan Facility [Member] Delayed Draw Term Loan Facility [Member] Term Loan Term Loan Facility [Member] Term Loan Facility [Member] Senior Unsecured Notes Non-Recourse Debt Non Recourse Debt [Member] Non Recourse Debt [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Government bond yield Government Bond Yield [Member] Government Bond Yield [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Disposed of by Means Other than Sale, Not Discontinued Operations Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] Mortgage Loans On Real Estate Interest Rate [Axis] Mortgage Loans On Real Estate Interest Rate [Axis] Mortgage Loans On Real Estate Interest Rate Mortgage Loans On Real Estate Interest Rate [Domain] Mortgage Loans On Real Estate Interest Rate [Domain] Mortgage Loans On Real Estate Interest Rate Fixed interest rate Fixed Interest Rate [Member] Fixed Interest Rate Variable interest rate Variable Interest Rate [Member] Variable Interest Rate Real Estate Property Ownership [Axis] Real Estate Property Ownership [Axis] Real Estate Properties [Domain] Real Estate Properties [Domain] Operating Lease Real Estate Subject To Operating Lease [Member] Real Estate Subject To Operating Lease Name of Property [Axis] Name of Property [Axis] Name of Property [Domain] Name of Property [Domain] Distribution Center In Inwood, West Virginia Distribution Center In Inwood, West Virginia [Member] Distribution Center In Inwood, West Virginia [Member] Six vacant properties Vacant Properties One [Member] Vacant Properties One [Member] Vacant property Vacant Properties Two [Member] Vacant Properties Two [Member] Business Acquisition [Axis] Business Acquisition [Axis] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Merged Entities Merged Entities [Member] Merged Entities [Member] Line of Credit Facility Line of Credit Facility [Line Items] Senior Unsecured Credit Facility Revolving Line Of Credit [Abstract] Revolving Line Of Credit [Abstract] Line of credit, maximum borrowing amount Line of Credit Facility, Maximum Borrowing Capacity Number of extension options Number of Extension Options The number of extension options included in a contract Option extension term Option Extension Period Option Extension Period Line of credit facility, available Line of Credit Facility, Remaining Borrowing Capacity Debt Instrument borrowing capacity fee (percentage) Line of Credit Facility, Commitment Fee Percentage Stated interest rate (percentage) Debt instrument term Debt Instrument, Term Variable interest rate (percentage) Debt Instrument, Basis Spread on Variable Rate Financing cost Non Recourse Mortgage Non Recourse Debt [Abstract] Non Recourse Debt [Abstract] Weighted average interest rate Debt, Weighted Average Interest Rate Liabilities assumed Asset Acquisition Liabilities Assumed Asset Acquisition Liabilities Assumed Mortgage loan on real estate, interest rate (percent) SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate Number of real estate properties Non-recourse mortgages, net Secured Debt Default interest rate (percentage) Debt Instrument, Default Interest Rate Debt Instrument, Default Interest Rate Accrued interest on debt Interest Payable Prepayments of mortgage principal Prepayment Of Mortgage Principal The cash outflow for the early payment of the principal amount on outstanding mortgage debt. Repayments of non recourse mortgage loan Repayments of Secured Debt Unamortized discount Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivatives Not Designated as Hedging Instruments Stock warrants Warrant [Member] Other assets, net Other Assets [Member] Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities [Member] Derivatives, Fair Value Derivatives, Fair Value [Line Items] Derivative assets, fair value Derivative Asset, Fair Value, Gross Asset Liability derivatives, fair value Derivative Asset, Fair Value, Gross Liability Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Goodwill [Line Items] Goodwill [Line Items] Goodwill Goodwill [Roll Forward] Goodwill, beginning balance Goodwill Foreign currency translation adjustments Goodwill, Foreign Currency Translation Gain (Loss) CPA:17 Merger measurement period adjustments (Note 3) Goodwill, Purchase Accounting Adjustments Goodwill, ending balance Schedule of Real Estate Properties [Table] Schedule of Real Estate Properties [Table] Operating properties Operating Properties [Member] Operating Properties [Member] Self-storage Self Storage [Member] Self Storage Hotel Hotel [Member] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Real Estate Properties Real Estate Properties [Line Items] Additional disclosures Other Business Disclosures [Abstract] Other Business Disclosures Square footage of real estate properties Area of Real Estate Property Weighted average lease term Lessor, Operating Lease, Term of Contract Occupancy rate Occupancy Rate The occupancy rate of our owned real estate properties as of the balance sheet date. Fair Value Disclosures [Abstract] Fair Value By Balance Sheet Grouping [Table] Fair Value, by Balance Sheet Grouping [Table] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value Hierarchy and NAV [Domain] Level 2 Fair Value, Inputs, Level 2 [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Measurement Basis [Axis] Measurement Basis [Axis] Fair Value Measurement Fair Value Measurement [Domain] Portion at Fair Value Measurement [Member] Portion at Fair Value Measurement [Member] Carrying Value Reported Value Measurement [Member] Fair Value Estimate of Fair Value Measurement [Member] Receivable Type [Axis] Receivable Type [Axis] Receivable [Domain] Receivable [Domain] Notes Receivable Notes Receivable [Member] Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Liabilities: Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Debt instrument, fair value Debt Instrument, Fair Value Disclosure Assets: Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Loans receivable Notes Receivable, Fair Value Disclosure Statement of Cash Flows [Abstract] Cash Flows — Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Net income Adjustments to net income: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization, including intangible assets and deferred financing costs Depreciation, Amortization and Accretion, Net Amortization of rent-related intangibles and deferred rental revenue Amortization Of Rent Related Intangibles and Deferred Rental Revenue Amortization Of Rent Related Intangibles and Deferred Rental Revenue Straight-line rent adjustments Straight Line Rent Adjustments Realized and unrealized losses (gains) on foreign currency transactions, derivatives, and other Realized Gain Loss On Foreign Currency Transactions And Other The net realized foreign currency transaction and other gains or losses (pretax) included in determining net income from transactions that were settled as of the balance sheet date. Investment Management revenue received in shares of Managed REITs and other Management income received in shares of affiliates Value of restricted shares of common stock received from affiliates to satisfy fees due to the reporting entity related to the management of the affiliates. Distributions of earnings from equity method investments Equity in earnings of equity method investments in the Managed Programs and real estate Stock-based compensation expense Share-based Payment Arrangement, Expense Deferred income tax benefit Deferred Income Tax Expense (Benefit) Gain on sale of real estate, net Gain (Loss) on Sale of Properties Impairment charges Impairment of Real Estate Changes in assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Net changes in other operating assets and liabilities Increase (Decrease) in Other Operating Assets and Liabilities, Net Deferred structuring revenue received Deferred Acquisition Revenue Received Total cash payment made to the advisor during the reporting period for structuring business combination transactions on behalf of the reporting entity. Increase in deferred structuring revenue receivable Increase Decrease In Structuring Revenue Receivable Total revenue included in income during the reporting period, reflecting services have been performed by the reporting entity and recorded as a receivable. Net Cash Provided by Operating Activities Net Cash Provided by (Used in) Operating Activities Cash Flows — Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of real estate Payments to Acquire Real Estate Funding for real estate construction, redevelopments, and other capital expenditures on real estate Payments To Acquire Real Estate Under Construction The cash outflow related to the acquisition of real estate under development. Return of capital from equity method investments Proceeds from Equity Method Investment, Distribution, Return of Capital Other investing activities, net Payments for (Proceeds from) Other Investing Activities Proceeds from sales of real estate Proceeds from Sale of Real Estate Held-for-investment Funding of short-term loans to affiliates Payments for Advance to Affiliate Capital contributions to equity method investments Payments to Acquire Equity Method Investments Proceeds from repayment of short-term loans to affiliates Repayment of Notes Receivable from Related Parties Net Cash Used in Investing Activities Net Cash Provided by (Used in) Investing Activities Cash Flows — Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Proceeds from Senior Unsecured Credit Facility Proceeds from Unsecured Lines of Credit Repayments of Senior Unsecured Credit Facility Repayments of Lines of Credit Prepayments of mortgage principal Proceeds from shares issued under ATM Program, net of selling costs Proceeds from Issuance of Common Stock Dividends paid Payments of Ordinary Dividends, Common Stock Proceeds from issuance of Senior Unsecured Notes Proceeds from Issuance of Unsecured Debt Scheduled payments of mortgage principal Payments for withholding taxes upon delivery of equity-based awards Payment, Tax Withholding, Share-based Payment Arrangement Payment of financing costs Payments of Financing Costs Other financing activities, net Proceeds from (Payments for) Other Financing Activities Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Distributions paid to noncontrolling interests Payments of Ordinary Dividends, Noncontrolling Interest Proceeds from mortgage financing Proceeds from Issuance of Secured Debt Net Cash Used in Financing Activities Net Cash Provided by (Used in) Financing Activities Change in Cash and Cash Equivalents and Restricted Cash During the Period Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] Effect of exchange rate changes on cash and cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Net decrease in cash and cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash and cash equivalents and restricted cash, beginning of period Cash and cash equivalents and restricted cash, end of period Capital Leases Net Investment In Direct Financing Leases Capital Leases Net Investment In Direct Financing Leases [Table Text Block] Tabular disclosure of the entity's net investments in direct financing leases. Scheduled Future Lease Payments to be Received Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block] Scheduled Future Lease Payments to be Received - Before Adoption Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] Finance Receivables Credit Quality Indicators Financing Receivable Credit Quality Indicators [Table Text Block] LIBOR London Interbank Offered Rate (LIBOR) [Member] Maximum Loan Amount Authorized Loans receivable, related party Loans and Leases Receivable, Related Parties Accrued interest Interest Receivable CPA:18 – Global operating partnership Corporate Property Associates Eighteen Operating Partner [Member] Corporate Property Associates Eighteen Operating Partner CWI 1 operating partnership CWI Operating Partnership [Member] CWI Operating Partnership [Member] CWI 2 operating partnership Carey Watermark Investors 2 Operating Partnership [Member] Carey Watermark Investors 2 Operating Partnership [Member] Investments in Programs Equity Method Investment, Financial Statement, Reported Amounts [Abstract] Equity method investment, ownership percentage Equity Method Investment, Ownership Percentage Equity investments in real estate Equity Method Investments Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Land Land [Member] Office Building [Member] Lessee, Lease, Description Lessee, Lease, Description [Line Items] Total operating ROU assets Operating Lease, Right-of-Use Asset Operating ROU liabilities Operating Lease, Liability, Current Weighted-average remaining lease term — operating leases Operating Lease, Weighted Average Remaining Lease Term Weighted-average discount rate — operating leases Operating Lease, Weighted Average Discount Rate, Percent Operating lease right of use asset, (lease) Operating Lease Right Of Use Assets, Count Operating Lease Right Of Use Assets, Count Operating lease contract term Lessee, Operating Lease, Term of Contract Schedule Of Other Financial Instruments In Carrying Values And Fair Values Schedule Of Other Financial Instruments In Carrying Values And Fair Values [Table Text Block] Tabular disclosure of other financial instruments at carrying value and fair value. Segment Reporting Information Profit Loss Segment Reporting Information, Profit (Loss) [Abstract] Revenues Revenues Operating expenses Costs and Expenses Other income and (expenses) Nonoperating Income (Expense) Provision for income taxes Income Tax Expense (Benefit) Net income attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Net Income Attributable to W. P. Carey Net Income (Loss) Attributable to Parent Schedule of Equity Method Investments Equity Method Investments [Table Text Block] Due from affiliates Due from Related Parties, Current [Abstract] Short-term loans to affiliates, including accrued interest Notes Receivable, Related Parties, Current Deferred acquisition fees receivable, including accrued interest Deferred acquisition fees receivable The deferred amount of fees due from affiliates for structuring and negotiating investments on their behalf. Reimbursable costs Related party reimbursement revenue receivable The amount of reimbursable costs due from affiliates as of the balance sheet date. Accounts receivable Accounts Receivable, Related Parties Asset management fees receivable Asset Management Fees Receivable Unpaid revenue in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees. Current acquisition fees receivable Current Acquisition Fees Receivable The current amount of fees due from affiliates for structuring and negotiating investments on their behalf. Due from affiliates Due from Affiliates Reimbursed Costs Reimbursed Costs From Affiliates And Wholesaling Revenue [Abstract] Reimbursed Costs From Affiliates And Wholesaling Revenue [Abstract] Personnel and overhead reimbursement (percentage) Personnel and Overhead Reimbursement, Percentage The percentage threshold for personnel and overhead reimbursement chargeable by the advisor for personnel cost. Personnel expenses excludes costs related to the advisor’s legal transaction group allocated. The threshold is based on pro rata revenue. Schedule of Related Party Transactions Schedule of Related Party Transactions [Table Text Block] Schedule of Balances Due to and From Related Party Schedule of Balances Due to and From Related Party [Table Text Block] Tabular schedule of outstanding balances due to and from related parties. Schedule of Related Party Fees Schedule of Related Party Fees [Table Text Block] Schedule of Related Party Fees [Table Text Block] CPA: 17 operating partnership CPA 17 Operating Partnership [Member] CPA 17 Operating Partnership [Member] Apply Sorco AS Apply AS [Member] Apply AS [Member] Beach House JV, LLC Beach House JV, LLC [Member] Beach House JV, LLC [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Class A Common Class A [Member] Third Party Third Party [Member] Third Party [Member] Equity Investments [Axis] Equity Investments [Axis] Equity Investments Equity Investments [Domain] Equity Investments [Domain] Equity Investments Unconsolidated Real Estate Investment Unconsolidated Properties [Member] Schedule Of Equity Method Investments [Line Items] Investments in REITs Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures [Abstract] Asset management fees receivable, shares Asset management fees receivable, shares Asset management fees receivable, shares Aggregate unamortized basis difference on equity investments Aggregate Unamortized Basis Difference On Equity Investments Aggregate Unamortized Basis Difference On Equity Investments Measurement period adjustment, increase to investment in real estate Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Equity Investment Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Equity Investment Proceeds from repayment of preferred equity interest Proceeds From Preferred Equity Interest, Return of Capital Proceeds From Preferred Equity Interest, Return of Capital Real Estate [Abstract] Land, Buildings and Improvements and Assets Held for Sale Real Estate Disclosure [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Properties disposed of by sale Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] Land, buildings and improvements Land, Buildings and Improvements [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Discontinued Operation Additional Disclosures Discontinued Operation, Additional Disclosures [Abstract] Proceeds from the sale of properties Proceeds from Sale of Other Property, Plant, and Equipment Gain (loss) on sale of real estate, net of tax Gains (Losses) on Sales of Investment Real Estate Loss from the collection of loan Gain (Loss) From Collection Of Loan Receivable Gain (Loss) From Collection Of Loan Receivable Gain on sales of real estate, applicable tax Gain (Loss) on Sale of Properties, Applicable Income Taxes Number of properties disposed of Number Of Property Disposed Of Number Of Property Disposed Of Purchases of real estate Reclassification Operating Properties Operating Real Estate Business [Member] Operating Real Estate Business Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Real Estate [Domain] Real Estate [Domain] Building Net Lease Intangible Net Lease Intangible [Member] Net Lease Intangible [Member] Other liabilities Other Liabilities [Member] Construction in progress Construction in Progress [Member] Net investments in direct financing lease Educational Facility In Portland, Oregon Educational Facility In Portland, Oregon [Member] Educational Facility in Portland, Oregon [Member] Office Building In Morrisville, North Carolina Office Building In Morrisville, North Carolina [Member] Office Building In Morrisville, North Carolina [Member] Industrial Facility in Hurricane, Utah Industrial Facility in Hurricane, Utah [Member] Industrial Facility in Hurricane, Utah [Member] Office Building And Tractor/trailers Hub In Bensenville, Illinois Office Building And Tractor/trailers Hub In Bensenville, Illinois [Member] Office Building And Tractor/trailers Hub In Bensenville, Illinois [Member] Manufacturing And Distribution Centers in Westerville, Ohio, and North Wales, Pennsylvania Manufacturing And Distribution Centers in Westerville, Ohio, and North Wales, Pennsylvania [Member] manufacturing and distribution centers in Westerville, Ohio, and North Wales, Pennsylvania [Member] Manufacturing Facilities In Various Locations In The United States And Mexico Manufacturing Facilities In Various Locations In The United States And Mexico [Member] Manufacturing Facilities In Various Locations In The United States And Mexico [Member] Headquarters and Warehouse Facility in Statesville, North Carolina Headquarters, Warehouse, Distribution, and Manufacturing Facility in Statesville, North Carolina [Member] Headquarters, Warehouse, Distribution, and Manufacturing Facility in Statesville, North Carolina [Member] Headquaters and Industrial Facility In Conestoga, Pennsylvania Industrial Facility In Conestoga, Pennsylvania [Member] Industrial Facility In Conestoga, Pennsylvania [Member] Warehouse Facility In Zabia Wola, Poland Warehouse Facility In Zabia Wola, Poland [Member] Warehouse Facility In Zabia Wola, Poland [Member] Warehouse Facility in Dillon SC Warehouse Facility in Dillon SC [Member] Warehouse Facility in Dillon SC [Member] Warehouse Facility n Rotterdam, The Netherlands Warehouse Facility In Rotterdam, The Netherlands [Member] Warehouse Facility In Rotterdam, The Netherlands Industrial Facility In Legnica, Poland Industrial Facility In Legnica, Poland [Member] Industrial Facility In Legnica, Poland [Member] Build-to-Suit In Katowice, Poland Build-to-Suit In Katowice, Poland [Member] Build-to-Suit In Katowice, Poland [Member] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] In-place lease Leases, Acquired-in-Place [Member] Finite-Lived Intangible Liabilities By Major Class [Axis] Finite-Lived Intangible Liabilities By Major Class [Axis] Finite-Lived Intangible Liabilities By Major Class Finite Lived Intangible Liabilities By Major Class [Domain] Finite Lived Intangible Liabilities By Major Class [Domain] Finite Lived Intangible Liabilities By Major Class Below-market rent Below Market Lease [Member] Below Market Lease Asset held for sale, not in discontinued operations Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Lease revenue Occupancy [Member] Food, bevarge and other Food and Beverage [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Events Subsequent Event [Member] Decrease in exchange rate Increase (Decrease) In Foreign Currency Exchange Rate Increase (Decrease) In Foreign Currency Exchange Rate Foreign currency exchange rate Foreign Currency Exchange Rate, Translation Decrease to land building and imprvements Land Investment Building and Building Improvements Land Investment Building and Building Improvements Depreciation Depreciation Investments in real estate Real Estate Investments, Net [Abstract] Acquisition related costs Acquisition Costs, Period Cost Finite lived intangible assets useful life Finite-Lived Intangible Asset, Useful Life Capitalized construction cost Funds Capitalized For Construction In Progress Construction costs capitalized to date on capital projects that have not been completed and assets being constructed that are not ready to be placed into service. Number of construction projects Number Of Construction Projects During Period The number of construction projects currently in progress. Unfunded commitment Unfunded Commitment Amount of commitment unfunded as of the balance sheet date. Construction in progress placed into service Property, Plant and Equipment, Transfers and Changes Funding commitment Other Commitment Number of ground leases (lease) Number Of Ground Leases Number Of Ground Leases Decrease in carrying value of real estate Other Real Estate, Period Increase (Decrease) Purchase option exercise price, value Purchase Option Exercise Price, Value Purchase Option Exercise Price, Value Sublease income Sublease Income Cash paid for operating lease liabilities Operating Lease, Payments Scheduled future minimum operating lease payments, year one Operating Leases, Future Minimum Payments Due, Next Twelve Months Scheduled future minimum operating lease payments, year two Operating Leases, Future Minimum Payments, Due in Two Years Scheduled future minimum operating lease payments, year three Operating Leases, Future Minimum Payments, Due in Three Years Scheduled future minimum operating lease payments, year four Operating Leases, Future Minimum Payments, Due in Four Years Scheduled future minimum operating lease payments, year five Operating Leases, Future Minimum Payments, Due in Five Years Scheduled future minimum operating lease payments, thereafter Operating Leases, Future Minimum Payments, Due Thereafter Assets held for sale, net Assets Held-for-sale, Not Part of Disposal Group Revenues Revenues [Abstract] Investment Management: Operating Expenses Costs and Expenses [Abstract] General and administrative General and Administrative Expense Reimbursable costs from affiliates Cost of Revenue Subadvisor fees Advisory Expense This represents the company's cost incurred during an accounting period for advising related party investments, which will be billed back to the respective party and is a component operating expenses. Stock-based compensation expense Allocated Stock Based Compensation Expense, Excluding Restructuring Expense Allocated Stock Based Compensation Expense, Excluding Restructuring Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Total operating expenses Other Income and Expenses Nonoperating Income (Expense) [Abstract] Equity in earnings of equity method investments in the Managed Programs and real estate Other gains and (losses) Other Nonoperating Income (Expense) Total other income and expenses Income before income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net Income Goodwill And Intangible Assets Liabilities Disclosure [Abstract] Goodwill And Intangible Assets Liabilities Disclosure Goodwill and Other Intangibles Goodwill and Intangible Assets Disclosure [Text Block] Direct Financing Leases, Lease Receivable, Fiscal Year Maturity Sales-type and Direct Financing Leases, Lease Receivable, Fiscal Year Maturity [Abstract] 2019 (remainder) Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Remainder of Fiscal Year 2020 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years 2021 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years 2022 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years 2023 Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years Thereafter Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter Total Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received Equity Investments in the Managed Programs and Real Estate Equity Method Investments and Joint Ventures Disclosure [Text Block] Basis of Presentation Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] Subsequent Events [Abstract] Subsequent Events Subsequent Events [Text Block] Agreements and Transactions with Related Parties Related Party Transactions Disclosure [Text Block] Statement of Financial Position [Abstract] Investments in real estate: Real Estate Investment Property, Net [Abstract] Land, buildings and improvements Net investments in direct financing leases Net investments in direct financing leases Capital Leases, Net Investment in Direct Financing Leases In-place lease intangible assets and other Finite-Lived Intangible Asset, Acquired-in-Place Leases, Net This element represents the amount of value that was allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property at the balance sheet date. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. Above-market rent intangible assets Finite-Lived Intangible Asset, Off-market Lease, Favorable, Net The element represents the identifiable intangible asset that was established upon acquisition based on a favorable difference between the terms of an acquired lease and the current market terms for that lease at the acquisition date, net of accumulated amortization at the balance sheet date. Investments in real estate Accumulated depreciation and amortization Real Estate Investment Property, Accumulated Depreciation Net investments in real estate Equity investments in the Managed Programs and real estate Due from affiliates Other assets, net Other Assets Goodwill Total assets Liabilities and Equity Liabilities and Equity [Abstract] Debt: Liabilities [Abstract] Unsecured revolving credit facility Long-term Line of Credit Debt, net Long-term Debt Accounts payable, accrued expenses and other liabilities Accounts Payable and Accrued Liabilities Below-market rent and other intangible liabilities, net Below Market Lease, Net Deferred income taxes Deferred Income Tax Liabilities, Net Dividends payable Dividends Payable Total liabilities Liabilities Commitments and contingencies (Note 11) Commitments and Contingencies Preferred stock, $0.001 par value, 50,000,000 shares authorized; none issued Preferred Stock, Value, Issued Common stock, $0.001 par value, 450,000,000 shares authorized; 170,756,507 and 165,279,642 shares, respectively, issued and outstanding Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Distributions in excess of accumulated earnings Accumulated Distributions in Excess of Net Income Deferred compensation obligation Deferred Employee Stock Ownership Plan, Issuance of Shares or Sale of Treasury Shares Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Total stockholders’ equity Stockholders' Equity Attributable to Parent Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Total equity Total liabilities and equity Liabilities and Equity Subsequent Event [Table] Subsequent Event [Table] Manufacturing/Warehouse Portfolio in Milwaukee, Wisconsin Manufacturing Warehouse Portfolio In Milwaukee, Wisconsin [Member] Manufacturing Warehouse Portfolio In Milwaukee, Wisconsin [Member] Headquarters/Manufacturing Facility and Warehouse Facility in Ontario, Canada\ Headquarters Manufacturing Facility And Warehouse Facility In Ontario, Canada [Member] Headquarters Manufacturing Facility And Warehouse Facility In Ontario, Canada [Member] Subsequent Event Subsequent Event [Line Items] Number of investments (investments) Number Of Investments Number Of Investments Unsecured revolving credit facility Senior Unsecured Credit Facility [Member] Senior Unsecured Credit Facility [Member] JPY Japan, Yen EURIBOR Euro Interbank Offering Rate [Member] Euro Interbank Offering Rate [Member] JPY LIBOR JPY LIBOR [Member] JPY LIBOR [Member] Senior Unsecured Credit Facility Debt and Lease Obligation [Abstract] Debt Debt and Lease Obligation Fixed lease cost Operating Lease, Cost Variable lease cost Variable Lease, Cost Total lease cost Lease, Cost Related Party Fees Basis [Axis] Related Party Fees Basis [Axis] -- None. No documentation exists for this element. -- Related Party Fees Basis [Domain] Related Party Fees Basis [Domain] -- None. No documentation exists for this element. -- Contract sales price of investment Contract Sales Price Of Investment [Member] Contract Sales Price Of Investment [Member] Managed Reits Managed Reits [Member] Managed Reits Percentage of acquisition fees earned (structuring revenue percentage) Percentage of Acquisition Fees earned The percentage of fees paid to the advisor by its affiliates for the structuring and negotiating investments on the company's behalf and based on the aggregate total costs of an investment for all investments other than those in readily-marketable real estate securities purchased in the secondary market. Advisory Agreements with REIT Advisory Agreements with REIT [Abstract] Advisory Agreements with REIT [Abstract] Distributions Of Available Cash and Deferred Revenue Earned Distributions Of Available Cash and Deferred Revenue Earned [Abstract] Distributions Of Available Cash and Deferred Revenue Earned [Abstract] Percentage of Available Cash distribution to advisor Percentage of Available cash distribution to advisor The maximum percentage of available cash generated from operations, excluding capital proceeds, as reduced by operating expenses and debt service, excluding prepayments and balloon payments, of the operating partnership that is paid to the advisor for service fees. Measurement period adjustment, decrease to other assets, net Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Other Assets Measurement period adjustment, decrease to deferred income taxes Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liability Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Tax Liability Measurement period adjustment, decrease to goodwill Funding of short-term loans to affiliates Other Transactions with Affiliates Other Transactions With Affiliates [Abstract] Other Transactions With Affiliates [Abstract] Jointly owned investments Number Of Jointly Owned Investments Number Of Jointly Owned Investments Jointly owned investments, consolidated Number Of Jointly Owned Investments, Consolidated Number Of Jointly Owned Investments, Consolidated Jointly owned investment, accounted for under the equity method investments Number Of Jointly Owned Investments, Equity Method Investments Number Of Jointly Owned Investments, Equity Method Investments Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Variable Interest Entity Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entity Variable Interest Entity [Line Items] Liabilities Schedule of Senior Unsecured Credit Facilities Schedule of Line of Credit Facilities [Table Text Block] Schedule of Senior Unsecured Notes Schedule of Debt [Table Text Block] Scheduled Debt Principal Payments Contractual Obligation, Fiscal Year Maturity [Table Text Block] Schedule of Variable Interest Entities Schedule of Variable Interest Entities [Table Text Block] Reconciliation of Cash and Cash Equivalents Schedule of Cash and Cash Equivalents [Table Text Block] Reconciliation of Restrictions on Cash and Cash Equivalents Restrictions on Cash and Cash Equivalents [Table Text Block] Hotel in Memphis, Tennessee Hotel in Memphis, Tennessee [Member] Hotel in Memphis, Tennessee [Member] Hotel in Bloomington, Minnesota Hotel in Bloomington, Minnesota [Member] Hotel in Bloomington, Minnesota [Member] Hotel in Miami, FL Hotel in Miami, FL [Member] Hotel in Miami, FL [Member] Number of business segments Number of Operating Segments Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest expense Interest Expense [Member] Other gains Other Income [Member] Third Party [Axis] Third Party [Axis] Third Party Axis Third Party [Domain] Third Party [Domain] Third Party Domain Individual Counterparty Individual Counterparty [Member] Derivatives, Fair Value [Line Items] Summary of Derivative Instruments Summary of Derivative Instruments [Abstract] Net collateral posted for derivatives Derivative Asset, Collateral, Obligation to Return Cash, Offset Estimated amount reclassified from OCI to expense (gain) Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred Derivative, remaining maturity Derivative, Remaining Maturity Total credit exposure on derivatives Credit Derivative, Maximum Exposure, Undiscounted Derivatives, net liability position Derivative, Net Liability Position, Aggregate Fair Value Aggregate termination value for immediate settlement Assets Needed for Immediate Settlement, Aggregate Fair Value Number Of Offerings Completed Number Of Offerings Completed Number Of Offerings Completed Principal amount Other comprehensive income foreign currency gain (loss) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax Equity [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Restricted Stock, RSU, and PSU Restricted Stock, RSU, and PSU [Member] Restricted Stock, RSU, and PSU [Member] Long Term Incentive Plan Long Term Incentive Plan [Member] Long Term Incentive Plan [Member] PSU Awards Performance Shares [Member] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] ATM Program ATM [Member] ATM [Member] Common Stock Share-based Compensation Arrangement by Share-based Payment Award Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Performance period (in years) Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Risk free interest rate (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Fair value assumptions expected volatility rate (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate Fair value assumptions expected dividend rate (percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate Fair value of vested stock Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Deferred compensation arrangement with individual, common stock reserved for future issuance (shares) Deferred Compensation Arrangement with Individual, Common Stock Reserved for Future Issuance Deferred compensation obligation Potential performance return rate for stock awards Potential Performance Return Rate for Stock Awards Potential Performance Return Rate for Stock Awards Unrecognized stock based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Weighted-average remaining term Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Common stock maximum offering value Common Stock Maximum Offering Value The maximum value of common stock permitted to be issued in initial public offering pursuant to the Registration Statement on Form S-11. Shares issued (shares) Weighted average share price (usd per share) Weighted Average Price of Stock Issued During Period New Issues Weighted Average Price of Stock Issued During Period New Issues Proceed from issuance of stock Distributions Declared Equity Distributions [Abstract] Equity Distributions [Abstract] Dividends declared per share (in dollars per share) Statement of Comprehensive Income [Abstract] Other Comprehensive Loss Unrealized (loss) gain on investments Net current period other comprehensive loss Other Comprehensive Income (Loss), Net of Tax Comprehensive Income Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Amounts Attributable to Noncontrolling Interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract] Net income Foreign currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Noncontrolling Interest Unrealized loss on derivative instruments Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Noncontrolling Interest Comprehensive (income) loss attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive Income Attributable to W. P. Carey Comprehensive Income (Loss), Net of Tax, Attributable to Parent Future Minimum Payments Receivable Operating Leases, Future Minimum Payments Receivable [Abstract] 2019 Operating Leases, Future Minimum Payments Receivable, Current 2020 Operating Leases, Future Minimum Payments Receivable, in Two Years 2021 Operating Leases, Future Minimum Payments Receivable, in Three Years 2022 Operating Leases, Future Minimum Payments Receivable, in Four Years 2023 Operating Leases, Future Minimum Payments Receivable, in Five Years Thereafter Operating Leases, Future Minimum Payments Receivable, Thereafter Total Operating Leases, Future Minimum Payments Receivable Derivatives in Cash Flow Hedging Relationships Derivative Instrument Risk [Axis] Derivative Contract Type [Domain] Other gains and (losses) Other Income And Expense [Member] Other Income And Expense Amount of Gain (Loss) on Derivatives Recognized in Income Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net [Abstract] Amount of Gain (Loss) on Derivatives Recognized in Income Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Gain (Loss) on Hedging Activity Gain (Loss) on Hedging Activity Gain (Loss) on Derivative Instruments, Net, Pretax Gain (Loss) on Derivative Instruments, Net, Pretax Reconciliation of Operating Profit (Loss) from Segments to Consolidated Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] Reconciliation of Assets from Segment to Consolidated Reconciliation of Assets from Segment to Consolidated [Table Text Block] Real Estate Investment Property At Cost Real Estate Investment Property, at Cost [Abstract] Land Land Buildings and improvements Investment Building and Building Improvements Real estate under construction Development in Process Less: Accumulated depreciation Finance Receivables Financing Receivables [Text Block] Johnson Self Storage Johnson Self Storage [Member] Johnson Self Storage [Member] Kesko Senukai Kesko Senukai [Member] Kesko Senukai [Member] Bank Pekao S.A. Bank Pekao [Member] Bank Pekao [Member] BPS Nevada, LLC Bps Partners [Member] Bps Partners State Farm Mutual Automobile Insurance Co. State Farm [Member] State Farm [Member] Fortenova Grupa d.d.( formerly Konzum d.d.) Agorkor Five [Member] Agorkor Five [Member] Stock-Based Compensation and Equity Stockholders' Equity Note Disclosure [Text Block] CWI REITs CWI REITs [Member] CWI REITs [Member] Average equity value Average Equity Value [Member] Average Equity Value Lodging-related investments Lodging related investments [Member] Lodging related investments Average market value of investment Average Market Value Of Investment [Member] Average Market Value Of Investment [Member] Settlement Term [Axis] Settlement Term [Axis] -- None. No documentation exists for this element. -- Settlement Term [Domain] Settlement Term [Domain] -- None. No documentation exists for this element. -- Upon Completion Completed Construction Projects Put in Service [Member] Completed Construction Projects Put in Service [Member] Deferred Deferred [Member] Deferred [Member] Investment [Axis] Investment [Axis] Investment [Domain] Investment [Domain] Long-term net lease Long term net lease [Member] Long term net lease Gross assets fair value Gross Assets Fair Value [Member] Gross Assets Fair Value [Member] Asset management fees earned (percentage) Percentage of asset management fees earned The percentage fee paid to the company by its affiliates for managing the company's assets based on the average market value or average equity value, as applicable, depending on the type of investments. Percentage of asset management fees paid in cash (percentage) Asset Management Fees Receivable In Cash Percent Of Total Under the terms of the advisory agreements, percentage of total performance fees that is receivable in cash. Percentage of asset management fees paid in shares (percentage) Asset Management Fees Receivable In Shares Percent Of Total Under the terms of the advisory agreements, percentage of total performance fees that is receivable in restricted shares. Fees earned by advisor paid to subadvisor (percentage) Percentage Of Fees Earned By Advisor Paid To Subadvisor Percentage of fees related to certain personnel services under the advisory agreement that the advisor must pay to the subadvisor. Structuring revenue Structuring Revenue [Abstract] Structuring Revenue [Abstract] Loan refinancing fee (percentage) Percentage Of Loan Refinancing Fee The percentage that is used to calculate the fee costs paid to the advisor for refinancing loans. The percentage is based on the amount of loan refinanced. Income Tax Disclosure [Abstract] Income Tax Contingency [Table] Income Tax Contingency [Table] Income Taxes Income Tax Contingency [Line Items] Current income tax expense Current Income Tax Expense (Benefit) Deferred income tax benefit (expense) Deferred Other Tax Expense (Benefit) Deferred tax benefit Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability Land, buildings and improvements Accumulated depreciation and amortization Accumulated Depreciation and Amortization [Member] Accumulated Depreciation and Amortization [Member] Lease revenues Lease Income Lease termination income and other Lease Termination Income and Other Revenue Lease Termination Income and Other Revenue Revenues Reimbursable tenant costs Reimbursable Tenant Expense Reimbursable Tenant Expense Operating property expenses Operating Property Expenses Operating Property Expenses Property expenses, excluding reimbursable tenant costs Occupancy, Net Merger and other expenses Merger And Other Expenses, Operating Merger And Other Expenses, Operating Interest expense Interest Expense (Loss) gain on sale of real estate, net Gain (Loss) on Sale of Properties, before Applicable Income Taxes (Provision for) benefit from income taxes Income Statement [Abstract] Real Estate: Real Estate Revenue [Abstract] Real Estate Revenue [Abstract] Merger and other expenses Basic Earnings Per Share (usd per share) Income (Loss) from Continuing Operations, Per Basic Share Diluted Earnings Per Share (usd per share) Income (Loss) from Continuing Operations, Per Diluted Share Weighted-Average Shares Outstanding Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Basic (in shares) Weighted Average Number of Shares Outstanding, Basic Diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Lease payments receivable Direct Financing Lease, Lease Receivable Unguaranteed residual value Direct Financing Lease, Unguaranteed Residual Asset Net investment in finance leases, excluding unearned income Direct Financing Lease, Net Investment in Lease, Excluding Deferred Selling Profit Direct Financing Lease, Net Investment in Lease, Excluding Deferred Selling Profit Less: unearned income Direct Financing Lease, Deferred Selling Profit Net receivables (difference between undiscounted cash flows and discounted cash flows) Lease payments receivable Capital Leases, Net Investment in Direct Financing Leases, Minimum Payments to be Received Unguaranteed residual value Capital Leases, Net Investment in Direct Financing Leases, Unguaranteed Residual Values of Leased Property Net investment in finance leases, excluding unearned income Capital Leases Net Investment In Direct Financing Leases Excluding Unearned Income The net investment in direct financing leases as of the balance sheet date consisting of: (a) minimum lease payments due on direct financing leases, (b) unguaranteed residual value, and (c) any unamortized initial direct costs; less: (i) executory costs, and (ii) the accumulated allowance for uncollectible minimum lease payments. Less: unearned income Capital Leases, Net Investment in Direct Financing Leases, Deferred Income Net investment in finance leases Lessor, Operating Lease Rents Lessor, Operating Lease, Payments, Rolling Maturity [Abstract] 2019 (remainder) Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year 2020 Lessor, Operating Lease, Payments to be Received, Two Years 2021 Lessor, Operating Lease, Payments to be Received, Five Years 2022 Lessor, Operating Lease, Payments to be Received, Rolling Year Four 2023 Lessor, Operating Lease, Payments to be Received, Rolling Year Five Thereafter Lessor, Operating Lease, Payments to be Received, Thereafter Total Lessor, Operating Lease, Payments to be Received Schedule Of Finite Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Maximum Finite-Lived Intangible Assets Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets, Net Finite-Lived Intangible Assets, Net [Abstract] Amortization of intangible assets Amortization of Intangible Assets Australian Properties Australian Properties [Member] Australian Properties [Member] Adjustments for New Accounting Pronouncements [Axis] Adjustments for New Accounting Pronouncements [Axis] Type of Adoption [Domain] Type of Adoption [Domain] ASU 2016-02 Accounting Standards Update 2016-02 [Member] Basis of Consolidation Basis of Consolidation [Abstract] Basis of Consolidation [Abstract] Decrease in variable interest entity, count