Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities
Net income	$ 112,808	$ 96,027
Depreciation, Depletion and Amortization	166,123	142,677
Adjustments to reconcile net income to net cash provided by operating activities:
Gains (Losses) on Extinguishment of Debt	525	1,992
Gain (Loss) on Sale of Properties, Net of Applicable Income Taxes	(805)	(772)
Loss on sale of real estate	0	121
Amortization of loan fees and costs	8,090	7,300
Amortization of debt premiums/discounts	100	383
Amortization of above and below Market Leases	(2,191)	(2,490)
Deferred rent	(35,511)	(20,007)
Stock compensation expense	9,372	11,541
Investment gains	(9,481)	(4,716)
Investment losses	8,725	529
Changes in operating assets and liabilities:
Restricted cash	0	1,243
Tenant receivables	(939)	(271)
Deferred leasing costs	(25,910)	(37,190)
Other assets	(12,228)	(11,428)
Accounts payable, accrued expenses, and tenant security deposits	36,446	51,437
Net cash (used in) provided by operating activities	255,124	236,376
Investing Activities
Proceeds from sale of properties	28,378	101,815
Additions to properties	(345,074)	(450,140)
Purchase of properties	(97,785)	(24,537)
Payments for (Proceeds from) Deposits on Real Estate Acquisitions	7,292	0
Change in restricted cash related to construction projects	6,694	5,711
Contributions to unconsolidated real estate entity	(67,525)	(13,881)
Additions to investments	(35,484)	(22,835)
Proceeds from investments	13,883	12,750
Proceeds from Collection of Notes Receivable	29,866	0
Net cash (used in) provided by investing activities	(474,339)	(391,117)
Financing Activities
Borrowings from secured notes payable	108,626	26,319
Repayments of borrowings from secured notes payable	(228,909)	(34,120)
Proceeds from Issuance of Unsecured Debt	698,908	498,561
Principal borrowings from unsecured senior line of credit	890,000	319,000
Repayments of borrowings from unsecured senior line of credit	(952,000)	(871,000)
Repayments of Unsecured Debt	(125,000)	(250,000)
Repayments of Convertible Debt	0	(384)
Change in restricted cash related to financings	375	923
Deferred financing costs paid	(7,989)	(16,247)
Proceeds from Issuance of Common Stock	0	535,686
Dividends paid on common stock	(150,540)	(120,367)
Dividends paid on preferred stock	(19,414)	(19,414)
Proceeds from Noncontrolling Interests	19,410	0
Distributions to noncontrolling interests	(2,594)	(2,100)
Payments of Distributions to Affiliates	(893)	0
Net cash provided by (used in) financing activities	229,980	66,857
Effect of foreign exchange rate changes on cash and cash equivalents	(1,438)	752
Net increase in cash and cash equivalents	9,327	(87,132)
Cash and cash equivalents at beginning of period	57,696	140,971
Cash and cash equivalents at end of period	67,023	53,839
Supplemental Disclosure of Cash Flow Information
Cash paid during the period for interest, net of interest capitalized	33,783	34,281
Non-Cash Investing Activities
Note receivable from sale of real estate	0	38,820
Assumption of secured notes payable in connection with purchase of properties	$ (48,329)	$ 0