CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 62,774	$ 13,737	$ 95,664	$ 329,232
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization			878,444	847,797
Amortization of deferred revenue and lease intangibles, net			(71,620)	(25,343)
Other non-cash amortization			14,686	15,211
Allowance on loans receivable and investments	(60)	4,999	(9,021)	34,654
Stock-based compensation			26,165	17,322
Straight-lining of rental income			(10,166)	107,134
Loss on extinguishment of debt, net			56,808	7,386
Gain on real estate dispositions	(150,292)	(12,622)	(194,083)	(240,101)
Gain on real estate loan investments			(2,006)	(167)
Income tax expense (benefit)			4,656	(99,702)
(Income) loss from unconsolidated entities			(7,279)	15,869
Distributions from unconsolidated entities			9,466	2,960
Other			(830)	15,615
Changes in operating assets and liabilities:
Increase in other assets			(49,051)	(68,228)
Decrease in accrued interest			(22,414)	(12,975)
Increase in accounts payable and other liabilities			40,896	207,749
Net cash provided by operating activities			760,315	1,154,413
Cash flows from investing activities:
Net investment in real estate property			(1,103,210)	(77,625)
Investment in loans receivable			(384)	(113,147)
Proceeds from real estate disposals			497,303	682,604
Proceeds from loans receivable			302,700	106,966
Development project expenditures			(204,649)	(309,967)
Capital expenditures			(119,311)	(94,407)
Distributions from unconsolidated entities			17,847	0
Investment in unconsolidated entities			(107,140)	(7,832)
Insurance proceeds for property damage claims			501	33
Net cash (used in) provided by investing activities			(716,343)	186,625
Cash flows from financing activities:
Net change in borrowings under revolving credit facilities			(144,065)	(74,144)
Net change in borrowings under commercial paper program			369,943	(565,524)
Proceeds from debt			914,879	657,557
Repayment of debt			(1,499,036)	(127,528)
Purchase of noncontrolling interests			(11,485)	0
Payment of deferred financing costs			(23,608)	(7,564)
Issuance of common stock, net			617,438	36,395
Cash distribution to common stockholders			(506,972)	(760,363)
Cash distribution to redeemable OP unitholders			(5,400)	(5,954)
Cash issued for redemption of OP Units			(96)	(575)
Contributions from noncontrolling interests			35	1,138
Distributions to noncontrolling interests			(11,785)	(9,666)
Proceeds from stock option exercises			5,668	3,518
Other			(5,128)	(4,989)
Net cash used in financing activities			(299,612)	(857,699)
Net (decrease) increase in cash, cash equivalents and restricted cash			(255,640)	483,339
Effect of foreign currency translation			522	(951)
Cash, cash equivalents and restricted cash at beginning of period			451,640	146,102	$ 146,102
Cash, cash equivalents and restricted cash at end of period	$ 196,522	$ 628,490	196,522	628,490	$ 451,640
Assets and liabilities assumed from acquisitions and other:
Real estate investments			1,317,617	169,484
Other assets			16,132	1,224
Debt			484,073	55,368
Other liabilities			97,960	2,707
Deferred income tax liability			0	337
Noncontrolling interests			468	20,259
Partners' Capital Account, Acquisitions			751,248	0
Redemption of OP Units			$ 76	$ 0