Statement of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash Flow - Operating Activities
Net Income	$ 34,651,000	$ 19,911,000
Adjustments to net income
Depreciation and amortization including intangible assets and deferred financing costs	19,623,000	5,834,000
Income from equity investments in real estate in excess of distributions received	(336,000)	(154,000)
Issuance of shares to affiliate in satisfaction of fees due	5,286,000	1,727,000
Gain on sale of real estate	(787,000)	0
Unrealized loss on foreign currency transactions and others	475,000	91,000
Realized gain on foreign currency transactions and other	(588,000)	(164,000)
Straight-line rent adjustment and amortization of rent-related intangibles	(5,196,000)	(1,957,000)
Settlement Of Derivative Liability	(7,056,000)	0
Increase in accounts receivable and prepaid expenses	(3,652,000)	(2,088,000)
(Decrease) increase in accounts payable and accrued expenses	1,872,000	(3,084,000)
Increase in prepaid and deferred rental income	(7,265,000)	(3,812,000)
(Decrease) increase in due to affiliates	205,000	(4,382,000)
Net changes in other operating assets and liabilities	(1,895,000)	(2,000)
Net Cash Provided By Operating Activities	45,713,000	34,476,000
Cash Flows - Investing Activities
Distributions received from equity investments in real estate in excess of equity income	84,734,000	1,649,000
Acquisitions of real estate and direct financing leases and other capital expenditures	(318,663,000)	(385,545,000)
Capital contributions to equity investments in real estate	(229,639,000)	(10,300,000)
Funding of notes receivable	(30,000,000)	0
Vat Paid In Connection With Acquisition Of Real Estate	(3,542,000)	(20,368,000)
Vat Refunded In Connection With Acquisitions In Real Estate	29,336,000	0
Proceeds from sale of real estate	19,821,000	0
Funds placed in escrow	(23,832,000)	(95,534,000)
Funds released from escrow	9,553,000	46,017,000
Payment Of Deferred Acquisition Fees To Affiliate	(8,687,000)	(3,213,000)
Proceeds from repayment of notes receivable	49,560,000	7,000,000
Investment In Securities	(2,394,000)	0
Net Cash Provided By Used In Investing Activities	(423,753,000)	(460,294,000)
Cash Flows - Financing Activities
Distributions paid	(45,753,000)	(25,620,000)
Contributions from noncontrolling interests	1,185,000	0
Distributions to noncontrolling interests	(12,625,000)	(5,669,000)
Scheduled payments of mortgage principal	(6,695,000)	(4,806,000)
Proceeds from mortgage financing	186,499,000	192,417,000
Funds placed in escrow	(2,180,000)	(2,412,000)
Funds released from escrow	17,936,000	2,626,000
Proceeds from loans from affiliates	90,000,000	0
Repayments of loan from affiliate	(90,000,000)	0
Payment of financing costs and mortgage deposits, net of deposits refunded	(7,314,000)	(2,729,000)
Proceeds from issuance of shares, net of issuance costs	306,362,000	268,110,000
Purchase of treasury stock	(4,155,000)	(2,412,000)
Net Cash Provided By Financing Activities	433,260,000	419,505,000
Change in Cash and Cash Equivalents During the Period
Effect of exchange rate on cash	6,999,000	(2,197,000)
Net increase (decrease) in cash and cash equivalents	62,219,000	(8,510,000)
Cash and cash equivalents, beginning of period	162,745,000	281,554,000
Cash and cash equivalents, end of period	224,964,000	273,044,000
Supplemental Cash Flow Information [Abstract]
Deferred Acquisition Fees Payable	$ 8,000,000	$ 8,500,000