CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 307,925	$ 279,295
Adjustments to net income:
Depreciation and amortization	437,367	402,069
Amortization of share-based compensation	10,478	12,527
Non-cash revenue adjustments	(6,508)	(5,781)
Amortization of net premiums on mortgages payable	(1,061)	(1,167)
Amortization of deferred financing costs	6,378	5,337
Loss (gain) on interest rate swaps	2,058	(3,064)
Foreign currency and derivative gains, net	(463)	0
Gain on sales of real estate	(15,828)	(18,818)
Provisions for impairment on real estate	31,236	25,034
Change in assets and liabilities
Accounts receivable and other assets	(7,886)	(1,540)
Accounts payable, accrued expenses and other liabilities	14,010	(4,050)
Net cash provided by operating activities	777,706	689,842
CASH FLOWS FROM INVESTING ACTIVITIES
Investment in real estate	(2,019,666)	(1,437,377)
Improvements to real estate, including leasing costs	(15,834)	(22,432)
Proceeds from sales of real estate	72,601	83,024
Insurance proceeds received	0	7,121
Collection of loans receivable	0	5,267
Non-refundable escrow deposits	(7,173)	(3,275)
Net cash used in investing activities	(1,970,072)	(1,367,672)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash distributions to common stockholders	(629,658)	(564,747)
Borrowings on line of credit	1,619,282	1,670,000
Payments on line of credit	(1,871,282)	(1,006,000)
Principal payment on term loan	(70,000)	(125,866)
Proceeds from notes and bonds payable issued	895,774	497,500
Principal payment on notes payable	0	(350,000)
Principal payments on mortgages payable	(19,495)	(14,608)
Proceeds from common stock offerings, net	845,061	0
Proceeds from dividend reinvestment and stock purchase plan	6,259	6,966
Proceeds from At-the-Market (ATM) program, net	689,641	588,860
Redemption of common units	(21,123)	0
Distributions to noncontrolling interests	(1,027)	(1,391)
Debt issuance costs	(7,996)	(4,436)
Other items, including shares withheld upon vesting	(4,245)	(14,862)
Net cash provided by financing activities	1,431,191	681,416
Effect of exchange rate changes on cash and cash equivalents	(607)	0
Net increase in cash, cash equivalents and restricted cash	238,218	3,586
Cash, cash equivalents and restricted cash, beginning of period	21,071	12,142
Cash, cash equivalents and restricted cash, end of period	$ 259,289	$ 15,728