CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 259,840	$ 227,631
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amounts in discontinued operations)	385,940	380,932
Amortization of deferred revenue and lease intangibles, net	(9,879)	(7,003)
Other non-cash amortization	(2,928)	(9,401)
Stock-based compensation	11,411	10,800
Straight-lining of rental income, net	(17,231)	(14,330)
Loss (gain) on extinguishment of debt, net	2,665	(873)
Gain on real estate dispositions (including amounts in discontinued operations)	(14,142)	(2,195)
Gain on real estate loan investments	0	(1,099)
Gain on sale of marketable securities	0	(856)
Income tax expense (benefit)	6,407	(10,320)
(Income) loss from unconsolidated entities	(596)	818
Gain on re-measurement of equity interest upon acquisition, net	0	(1,241)
Other	6,494	3,872
Changes in operating assets and liabilities:
Decrease (increase) in other assets	11,208	(16,415)
Increase in accrued interest	2,374	3,315
Decrease in accounts payable and other liabilities	(45,861)	(55,947)
Net cash provided by operating activities	595,702	507,688
Cash flows from investing activities:
Net investment in real estate property	(271,526)	(283,622)
Purchase of noncontrolling interest	(3,588)	(6,124)
Investment in loans receivable and other	(44,488)	(32,332)
Proceeds from real estate disposals	52,350	24,290
Proceeds from loans receivable	5,980	218,043
Purchase of marketable securities	(46,689)	0
Proceeds from sale or maturity of marketable securities	0	5,493
Funds held in escrow for future development expenditures	2,602	11,816
Development project expenditures	(44,423)	(48,284)
Capital expenditures	(35,526)	(32,459)
Other	(125)	(411)
Net cash used in investing activities	(385,433)	(143,590)
Cash flows from financing activities:
Net change in borrowings under credit facilities	(199,951)	(280,926)
Proceeds from debt	696,661	918,455
Repayment of debt	(272,726)	(685,518)
Payment of deferred financing costs	(6,846)	(12,997)
Issuance of common stock, net	0	82,384
Cash distribution to common stockholders	(426,952)	(392,230)
Cash distribution to redeemable OP unitholders	(2,762)	(2,313)
Purchases of redeemable OP units	0	(208)
Contributions from noncontrolling interest	0	2,094
Distributions to noncontrolling interest	(4,908)	(5,045)
Other	(574)	6,808
Net cash used in financing activities	(218,058)	(369,496)
Net decrease in cash and cash equivalents	(7,789)	(5,398)
Effect of foreign currency translation on cash and cash equivalents	(392)	(89)
Cash and cash equivalents at beginning of period	94,816	67,908
Cash and cash equivalents at end of period	86,635	62,421
Assets and liabilities assumed from acquisitions:
Real estate investments	54,282	90,020
Other assets acquired	1,634	2,562
Debt assumed	51,115	68,602
Other liabilities	3,675	10,493
Deferred income tax liability	1,126	1,794
Noncontrolling interests	$ 0	$ 11,693