CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Investments in real estate:
Real estate, at cost (inclusive of amounts attributable to consolidated variable interest entities (''VIEs'') of $40,108 and $39,718, respectively)	$ 646,923	$ 560,592
Operating real estate, at cost (inclusive of amounts attributable to consolidated VIEs of $26,264 and $25,665, respectively)	109,748	109,851
Accumulated depreciation (inclusive of amounts attributable to consolidated VIEs of$21,373 and $20,431, respectively)	(129,072)	(122,312)
Net investments in properties	627,599	548,131
Net investments in direct financing leases	76,114	76,550
Equity investments in real estate and the REITs	528,012	322,294
Net investments in real estate	1,231,725	946,975
Cash and cash equivalents (inclusive of amounts attributable to consolidated VIEs of $268 and $86, respectively)	26,461	64,693
Due from affiliates	32,014	38,793
Intangible assets and goodwill, net	130,122	87,768
Other assets, net (inclusive of amounts attributable to consolidated VIEs of $2,722 and $1,845, respectively)	39,384	34,097
Total assets	1,459,706	1,172,326
Liabilities:
Non-recourse debt (inclusive of amounts attributable to consolidated VIEs of$14,451 and $9,593, respectively)	342,941	255,232
Line Of Credit	233,160	141,750
Accounts payable, accrued expenses and other liabilities (inclusive of amountsattributable to consolidated VIEs of $2,109 and $2,275, respectively)	64,774	40,808
Income taxes, net	58,239	41,443
Distributions payable	21,784	20,073
Total liabilities	720,898	499,306
Redeemable noncontrolling interest	6,792	7,546
Commitments and contingencies (Note 10)
W. P. Carey members' equity:
Listed shares, no par value, 100,000,000 shares authorized; 39,707,156 and 39,454,847	765,808	763,734
Distributions in excess of accumulated earnings	(85,874)	(145,769)
Deferred compensation obligation	10,511	10,511
Accumulated Other Comprehensive Income (Loss)	2,904	(3,463)
Total W. P. Carey members' equity	693,349	625,013
Noncontrolling interest	38,667	40,461
Total equity	732,016	665,474
Total liabilities and equity	$ 1,459,706	$ 1,172,326