CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 255,213	$ 206,650
Adjustments to net income:
Depreciation and amortization	332,913	287,943
Amortization of share-based compensation	10,400	7,291
Non-cash revenue adjustments	(1,507)	(4,351)
Loss on extinguishment of debt	9,819	0
Amortization of net premiums on mortgages payable	(710)	(708)
Amortization of deferred financing costs	4,916	3,960
Loss on interest rate swaps	1,992	1,364
Foreign currency and derivative losses (gains), net	1,062	(136)
Gain on sales of real estate	(39,829)	(14,154)
Provisions for impairment on real estate	18,347	17,733
Change in assets and liabilities
Accounts receivable and other assets	(61,091)	(11,250)
Accounts payable, accrued expenses and other liabilities	(16,881)	(4,679)
Net cash provided by operating activities	514,644	489,663
CASH FLOWS FROM INVESTING ACTIVITIES
Investment in real estate	(632,174)	(1,604,575)
Improvements to real estate, including leasing costs	(4,710)	(11,767)
Proceeds from sales of real estate	133,643	51,052
Purchase of short-term investment	(300,000)	0
Insurance and other proceeds received	108	0
Non-refundable escrow deposits	0	(9,619)
Net cash used in investing activities	(803,133)	(1,574,909)
CASH FLOWS FROM FINANCING ACTIVITIES
Cash distributions to common stockholders	(474,294)	(413,410)
Borrowings on line of credit	2,324,409	1,404,000
Payments on line of credit	(2,385,859)	(1,648,000)
Principal payment on term loan	(250,000)	(70,000)
Proceeds from notes and bonds payable issued	593,922	895,774
Principal payment on notes payable	(250,000)	0
Principal payments on mortgages payable	(14,730)	(2,492)
Payments upon extinguishment of debt	(9,445)	0
Proceeds from common stock offerings, net	728,883	845,061
Proceeds from dividend reinvestment and stock purchase plan	4,815	4,098
Proceeds from At-the-Market (ATM) program, net	94,076	122,155
Redemption of common units	0	(20,225)
Distributions to noncontrolling interests	(794)	(635)
Net receipts on derivative settlements	2,421	0
Debt issuance costs	(5,526)	(7,331)
Other items, including shares withheld upon vesting	(7,901)	(4,195)
Net cash provided by financing activities	349,977	1,104,800
Effect of exchange rate changes on cash and cash equivalents	(2,175)	(733)
Net increase in cash, cash equivalents and restricted cash	59,313	18,821
Cash, cash equivalents and restricted cash, beginning of period	71,005	21,071
Cash, cash equivalents and restricted cash, end of period	$ 130,318	$ 39,892