CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Dec. 31, 2023	Dec. 31, 2022
W. P. Carey stockholders’ equity:
Preferred stock, par value (usd per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	50,000,000	50,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	450,000,000	450,000,000
Common stock shares, issued (in shares)	218,671,874	210,620,949
Common stock shares, outstanding (in shares)	218,671,874	210,620,949