CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ 239,091	$ 480,558
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization of real estate, in-place lease and other intangibles	418,740	397,893
Amortization of deferred compensation	13,098	10,865
Amortization of deferred financing costs	9,760	11,141
Straight-line rents	(20,888)	(12,236)
Equity loss (income) from unconsolidated joint ventures	442	(4,571)
Distributions of earnings from unconsolidated joint ventures	17,519	27,692
Deferred income tax expense (benefit)	(12,831)	(17,786)
Impairments (recoveries), net	19,180	82,010
Loss on extinguishment of debt	43,899	54,227
Loss (gain) on sales of real estate, net	(162,211)	(322,852)
Loss (gain) on consolidation, net	41,017	0
Casualty-related loss (recoveries), net	0	9,912
Loss (gain) on sale of marketable securities	0	(50,895)
Other non-cash items	(1,033)	(1,529)
Decrease (increase) in accounts receivable and other assets, net	(4,665)	(2,221)
Increase (decrease) in accounts payable and accrued liabilities	31,800	(24,312)
Net cash provided by (used in) operating activities	632,918	637,896
Cash flows from investing activities:
Acquisitions of other real estate	(315,392)	(135,816)
Development and redevelopment of real estate	(341,906)	(261,510)
Leasing costs, tenant improvements, and recurring capital expenditures	(70,237)	(75,211)
Proceeds from sales of real estate, net	686,222	1,249,993
Contributions to unconsolidated joint ventures	(10,815)	(25,776)
Distributions in excess of earnings from unconsolidated joint ventures	19,631	4,845
Proceeds from the RIDEA II transaction, net	335,709	462,242
Proceeds from the U.K. JV transaction, net	393,997	0
Proceeds from sales/principal repayments on debt investments and direct financing leases	147,435	550,270
Investments in loans receivable, direct financing leases and other	(27,110)	(28,339)
Net cash provided by (used in) investing activities	817,534	1,740,698
Cash flows from financing activities:
Borrowings under bank line of credit, net	1,203,000	23,419
Repayments under bank line of credit	(1,580,668)	(339,826)
Issuance and borrowings of debt, excluding bank line of credit	223,587	5,395
Repayments and repurchase of debt, excluding bank line of credit	(927,869)	(1,466,946)
Payments for debt extinguishment and deferred financing costs	(41,552)	(51,415)
Issuance of common stock and exercise of options	4,686	18,118
Repurchase of common stock	(3,342)	(4,459)
Dividends paid on common stock	(522,566)	(520,779)
Issuance of noncontrolling interests	298,929	1,050
Distributions to and purchase of noncontrolling interests	(78,364)	(19,520)
Net cash provided by (used in) financing activities	(1,424,159)	(2,354,963)
Effect of foreign exchange on cash, cash equivalents and restricted cash	245	401
Net increase (decrease) in cash, cash equivalents and restricted cash	26,538	24,032
Cash, cash equivalents and restricted cash, beginning of period	82,203	136,990
Cash, cash equivalents and restricted cash, end of period	$ 108,741	$ 161,022