CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 967,307	$ 442,658
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	655,298	666,735
Amortization of deferred revenue and lease intangibles, net	(16,283)	(15,307)
Other non-cash amortization	11,186	7,174
Stock-based compensation	19,923	15,885
Straight-lining of rental income, net	(17,384)	(21,386)
Loss on extinguishment of debt, net	856	3,165
Gain on real estate dispositions	(502,288)	(31,779)
Gain on real estate loan investments	(124)	(2,271)
Income tax benefit	(15,619)	(30,832)
Income from unconsolidated entities	(767)	(2,151)
Gain on re-measurement of equity interest upon acquisition, net	(3,027)	0
Distributions from unconsolidated entities	3,909	5,574
Other	7,439	(1,075)
Changes in operating assets and liabilities:
(Increase) decrease in other assets	(17,598)	1,753
Increase (decrease) in accrued interest	12,688	(10,053)
Decrease in accounts payable and other liabilities	(19,277)	(21,944)
Net cash provided by operating activities	1,086,239	1,006,146
Cash flows from investing activities:
Net investment in real estate property	(262,123)	(1,421,592)
Investment in loans receivable and other	(734,033)	(154,949)
Proceeds from real estate disposals	532,137	63,561
Proceeds from loans receivable	84,361	194,063
Development project expenditures	(210,423)	(94,398)
Capital expenditures	(83,387)	(75,296)
Distributions from unconsolidated entities	5,816	0
Investment in unconsolidated entities	(42,399)	(6,175)
Net cash used in investing activities	(710,051)	(1,494,786)
Cash flows from financing activities:
Net change in borrowings under revolving credit facility	384,738	46,728
Proceeds from debt	1,058,437	876,617
Repayment of debt	(1,225,525)	(916,505)
Purchase of noncontrolling interests	(15,809)	(1,604)
Payment of deferred financing costs	(26,426)	(6,147)
Issuance of common stock, net	73,596	1,265,702
Cash distribution to common stockholders	(827,285)	(750,402)
Cash distribution to redeemable OP unitholders	(5,677)	(6,486)
Contributions from noncontrolling interests	4,402	5,926
Distributions to noncontrolling interests	(9,248)	(5,121)
Other	10,543	16,631
Net cash (used in) provided by financing activities	(578,254)	525,339
Net (decrease) increase in cash and cash equivalents	(202,066)	36,699
Effect of foreign currency translation on cash and cash equivalents	422	(443)
Cash and cash equivalents at beginning of period	286,707	53,023
Cash and cash equivalents at end of period	85,063	89,279
Assets and liabilities assumed from acquisitions:
Real estate investments	206,771	59,666
Utilization of funds held for an Internal Revenue Code Section 1031 exchange	(84,995)	(6,954)
Other assets acquired	(5,546)	79,879
Debt assumed	64,629	47,641
Other liabilities	64,090	60,446
Deferred income tax liability	(16,116)	2,279
Noncontrolling interest	3,627	22,225
Equity issued for purchase of OP and Class C units	$ 22,694	$ 22,970