Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2016	Dec. 31, 2015
W. P. Carey stockholders’ equity:
Preferred stock, par share value	$ 0.001	$ 0.001
Preferred stock, shares authorized	50,000,000	50,000,000
Preferred stock, shares issued	0	0
Common stock, per share value	$ 0.001	$ 0.001
Common stock, shares authorized	450,000,000	450,000,000
Common stock, shares outstanding	105,167,537	104,448,777