CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 121,274	$ 113,098
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amounts in discontinued operations)	193,876	186,943
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits	(5,383)	(3,310)
Other non-cash amortization	(1,965)	(5,329)
Stock-based compensation	6,044	5,662
Straight-lining of rental income, net	(7,914)	(7,865)
Gain on extinguishment of debt, net	(259)	0
Gain on real estate dispositions, net (including amounts in discontinued operations)	(2,437)	(477)
Gain on real estate loan investments	0	(340)
Income tax expense (including amounts in discontinued operations)	3,433	1,744
(Income) loss from unconsolidated entities	(248)	312
Gain on re-measurement of equity interest upon acquisition, net	0	(1,241)
Other	3,076	2,905
Changes in operating assets and liabilities:
Decrease (increase) in other assets	6,241	(10,459)
Increase in accrued interest	6,753	10,530
Decrease in accounts payable and other liabilities	(38,070)	(61,868)
Net cash provided by operating activities	284,421	230,305
Cash flows from investing activities:
Net investment in real estate property	(181,866)	(56,175)
Purchase of noncontrolling interest	0	(3,186)
Investment in loans receivable and other	(1,192)	(2,789)
Proceeds from real estate disposals	26,150	11,250
Proceeds from loans receivable	1,163	146,394
Payments to Acquire Marketable Securities	(25,000)	0
Funds held in escrow for future development expenditures	2,602	5,440
Development project expenditures	(23,948)	(21,588)
Capital expenditures	(16,134)	(19,795)
Other	(125)	(78)
Net cash (used in) provided by investing activities	(218,350)	59,473
Cash flows from financing activities:
Net change in borrowings under credit facilities	181,754	(375,916)
Proceeds from debt	0	916,871
Repayment of debt	(67,773)	(635,793)
Payment of deferred financing costs	(167)	(13,808)
Issuance of common stock, net	0	5,050
Cash distribution to common stockholders	(213,473)	(195,700)
Cash distribution to redeemable OP unitholders	(1,402)	(1,151)
Purchases of redeemable OP units	0	(108)
Distributions to noncontrolling interest	(2,237)	(1,450)
Other	1,641	2,058
Net cash used in financing activities	(101,657)	(299,947)
Net decrease in cash and cash equivalents	(35,586)	(10,169)
Effect of foreign currency translation on cash and cash equivalents	561	(49)
Cash and cash equivalents at beginning of period	94,816	67,908
Cash and cash equivalents at end of period	59,791	57,690
Assets and liabilities assumed from acquisitions:
Real estate investments	2,952	8,839
Other assets acquired	0	668
Other liabilities	2,952	6,422
Deferred income tax liability	0	1,532
Noncontrolling interests	$ 0	$ 1,553