CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income (loss)	$ 43,237	$ 464,177
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:	143,250	136,554
Amortization of deferred compensation	5,919	3,765
Amortization of deferred financing costs	3,336	3,858
Straight-line rents	(10,686)	(5,007)
Equity loss (income) from unconsolidated joint ventures	(570)	(3,269)
Distributions of earnings from unconsolidated joint ventures	5,336	7,842
Deferred income tax expense (benefit)	(2,394)	(8,130)
Impairments (recoveries), net	(3,298)	0
Loss (gain) on sales of real estate, net	(20,815)	(317,258)
Loss (gain) on consolidation, net	41,017	0
Loss (gain) on sale of marketable securities	0	(50,895)
Other non-cash items	(2,401)	(660)
Decrease (increase) in accounts receivable and other assets, net	(18,082)	1,136
Increase (decrease) in accounts payable and accrued liabilities	12,315	(38,984)
Net cash provided by (used in) operating activities	196,164	193,129
Cash flows from investing activities:
Acquisitions of real estate	(22,121)	0
Development and redevelopment of real estate	(113,648)	(75,166)
Leasing costs, tenant improvements, and recurring capital expenditures	(19,246)	(22,693)
Proceeds from sales of real estate, net	30,392	1,206,256
Contributions to unconsolidated joint ventures	(3,688)	(8,109)
Distributions in excess of earnings from unconsolidated joint ventures	7,257	870
Proceeds from the RIDEA II transaction, net	0	462,241
Proceeds from sales/principal repayments on debt investments and direct financing leases	132,429	185,364
Investments in loans receivable, direct financing leases and other	(647)	(15,000)
Net cash provided by (used in) investing activities	10,728	1,733,763
Cash flows from financing activities:
Borrowings under bank line of credit, net	240,000	(375,812)
Repayments under bank line of credit	(170,000)	(37,032)
Repayments and repurchase of debt, excluding bank line of credit	(1,172)	(647,427)
Issuance of common stock and exercise of options	2,774	3,472
Repurchase of common stock	(2,144)	(3,532)
Dividends paid on common stock	(174,149)	(173,629)
Issuance of noncontrolling interests	995	650
Distributions to and purchase of noncontrolling interests	(67,542)	(5,659)
Net cash provided by (used in) financing activities	(171,238)	(1,238,969)
Effect of foreign exchanges on cash, cash equivalents and restricted cash	111	7
Net increase (decrease) in cash, cash equivalents and restricted cash	35,765	687,930
Cash, cash equivalents and restricted cash, beginning of period	82,203	136,990
Cash, cash equivalents and restricted cash, end of period	$ 117,968	$ 824,920