Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Issuance of Senior Unsecured Notes On January 19, 2017, we completed a public offering of €500.0 million of 2.25% Senior Notes, at a price of 99.448% of par value, issued by our wholly owned subsidiary, WPC Eurobond B.V., which are guaranteed by us. These 2.25% Senior Notes have a 7.5-year term and are scheduled to mature on July 19, 2024. Senior Unsecured Credit Facility On January 26, 2017, we exercised our option to extend our Term Loan Facility (Note 11) by an additional year to January 31, 2018. In connection with the extension, we incurred financing costs of $0.3 million. Amended Credit Facility On February 22, 2017, we amended and restated our Senior Unsecured Credit Facility. We increased the capacity of our unsecured line of credit under our Amended Credit Facility to $1.85 billion, which is comprised of a $1.5 billion revolving line of credit maturing in four years with two six-month extension options, a €236.3 million term loan maturing in five years, and a $100.0 million delayed draw term loan also maturing in five years. The delayed draw term loan may be drawn within one year and allows for borrowings in U.S. dollars, euros, or British pounds sterling. We will incur interest at LIBOR, or a LIBOR equivalent, plus 1.00% on the revolving line of credit, EURIBOR plus 1.10% on the term loan, and LIBOR, or a LIBOR equivalent, plus 1.10% on the delayed draw term loan. Mortgage Loan Repayments In January 2017, we repaid five non-recourse mortgage loans with an aggregate principal balance of approximately $273.5 million, including three international mortgage loans with an aggregate principal balance of approximately $262.4 million (€245.9 million). Included in these amounts were mortgage loans totaling $243.8 million (€228.6 million), inclusive of amounts attributable to a noncontrolling interest of $89.0 million (€83.5 million), encumbering the Hellweg 2 portfolio. Dispositions On January 25, 2017, we sold an international property that was held for sale as of December 31, 2016 (Note 5) for gross proceeds of $24.3 million (€22.6 million). In addition, in January 2017, we transferred ownership of two international properties and the related non-recourse mortgage loan to the mortgage lender. At the dates of the transfers, the properties had an aggregate asset carrying value of $31.3 million (€29.6 million) and the related non-recourse mortgage loan had an outstanding balance of $31.9 million (€30.2 million). Repayments of Loans to Affiliate During January and February 2017, CWI 2 repaid in full the $210.0 million loan that was outstanding to us at December 31, 2016. Management Change On February 1, 2017, we announced that our board of directors had appointed Ms. ToniAnn Sanzone as our chief financial officer, effective immediately. Ms. Sanzone had been serving as our interim chief financial officer since October 14, 2016. Issuance of Stock-Based Compensation Awards During the first quarter of 2017 and through the date of this Report, in connection with our LTIP award program (Note 15), we issued 173,995 RSUs, 107,934 PSUs, and 2,656 RSAs to key employees, which will have a dilutive impact on our future earnings per share calculations.

Subsequent Events

Issuance of Senior Unsecured Notes

On January 19, 2017, we completed a public offering of €500.0 million of 2.25% Senior Notes, at a price of 99.448% of par value, issued by our wholly owned subsidiary, WPC Eurobond B.V., which are guaranteed by us. These 2.25% Senior Notes have a 7.5-year term and are scheduled to mature on July 19, 2024.

Senior Unsecured Credit Facility

On January 26, 2017, we exercised our option to extend our Term Loan Facility (Note 11) by an additional year to January 31, 2018. In connection with the extension, we incurred financing costs of $0.3 million.

Amended Credit Facility

On February 22, 2017, we amended and restated our Senior Unsecured Credit Facility. We increased the capacity of our unsecured line of credit under our Amended Credit Facility to $1.85 billion, which is comprised of a $1.5 billion revolving line of credit maturing in four years with two six-month extension options, a €236.3 million term loan maturing in five years, and a $100.0 million delayed draw term loan also maturing in five years. The delayed draw term loan may be drawn within one year and allows for borrowings in U.S. dollars, euros, or British pounds sterling. We will incur interest at LIBOR, or a LIBOR equivalent, plus 1.00% on the revolving line of credit, EURIBOR plus 1.10% on the term loan, and LIBOR, or a LIBOR equivalent, plus 1.10% on the delayed draw term loan.

Mortgage Loan Repayments

In January 2017, we repaid five non-recourse mortgage loans with an aggregate principal balance of approximately $273.5 million, including three international mortgage loans with an aggregate principal balance of approximately $262.4 million (€245.9 million). Included in these amounts were mortgage loans totaling $243.8 million (€228.6 million), inclusive of amounts attributable to a noncontrolling interest of $89.0 million (€83.5 million), encumbering the Hellweg 2 portfolio.

Dispositions

On January 25, 2017, we sold an international property that was held for sale as of December 31, 2016 (Note 5) for gross proceeds of $24.3 million (€22.6 million). In addition, in January 2017, we transferred ownership of two international properties and the related non-recourse mortgage loan to the mortgage lender. At the dates of the transfers, the properties had an aggregate asset carrying value of $31.3 million (€29.6 million) and the related non-recourse mortgage loan had an outstanding balance of $31.9 million (€30.2 million).

Repayments of Loans to Affiliate

During January and February 2017, CWI 2 repaid in full the $210.0 million loan that was outstanding to us at December 31, 2016.

Management Change

On February 1, 2017, we announced that our board of directors had appointed Ms. ToniAnn Sanzone as our chief financial officer, effective immediately. Ms. Sanzone had been serving as our interim chief financial officer since October 14, 2016.

Issuance of Stock-Based Compensation Awards

During the first quarter of 2017 and through the date of this Report, in connection with our LTIP award program (Note 15), we issued 173,995 RSUs, 107,934 PSUs, and 2,656 RSAs to key employees, which will have a dilutive impact on our future earnings per share calculations.