Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Flows — Operating Activities
Net income	$ 68,066	$ 59,825
Adjustments to net income:
Depreciation and amortization, including intangible assets and deferred financing costs	65,837	63,853
Investment Management revenue received in shares of Managed REITs and other	(16,505)	(15,602)
Equity in earnings of equity method investments in the Managed Programs and real estate	(15,325)	(15,774)
Distributions of earnings from equity method investments	15,289	16,848
Deferred income taxes	(12,155)	(5,550)
Amortization of rent-related intangibles and deferred rental revenue	11,455	12,503
Stock-based compensation expense	8,219	6,910
Gain on sale of real estate	(6,732)	(10)
Impairment charges	4,790	0
Realized and unrealized losses on foreign currency transactions, derivatives, and other	4,267	3,444
Straight-line rent	(3,722)	(4,729)
Changes in assets and liabilities:
Net changes in other operating assets and liabilities	(23,893)	(15,254)
Deferred structuring revenue received	4,080	6,672
Increase in deferred structuring revenue receivable	(725)	(1,400)
Net Cash Provided by Operating Activities	102,946	111,736
Cash Flows — Investing Activities
Purchases of real estate	(85,197)	0
Proceeds from repayment of short-term loans to affiliates	37,000	210,000
Proceeds from sales of real estate	35,691	24,184
Funding for real estate construction and redevelopments	(17,236)	(13,039)
Funding of short-term loans to affiliates	(10,000)	(22,835)
Other capital expenditures on owned real estate	(3,312)	(1,320)
Return of capital from equity method investments	3,244	1,512
Capital contributions to equity method investments	(715)	0
Other investing activities, net	427	(486)
Capital expenditures on corporate assets	(47)	(99)
Net Cash (Used in) Provided by Investing Activities	(40,145)	197,917
Cash Flows — Financing Activities
Repayments of Senior Unsecured Credit Facility	(650,722)	(1,268,091)
Proceeds from issuance of Unsecured Senior Notes	616,355	530,456
Proceeds from Senior Unsecured Credit Facility	292,964	778,827
Prepayments of mortgage principal	(164,908)	(42,439)
Distributions paid	(109,407)	(106,751)
Scheduled payments of mortgage principal	(22,472)	(257,449)
Payments for withholding taxes upon delivery of equity-based awards and exercises of stock options	(13,883)	(10,819)
Distributions paid to noncontrolling interests	(5,224)	(6,261)
Payment of financing costs	(3,590)	(12,464)
Proceeds from mortgage financing	857	0
Other financing activities, net	(137)	397
Contributions from noncontrolling interests	0	80,513
Net Cash Used in Financing Activities	(60,167)	(314,081)
Change in Cash and Cash Equivalents and Restricted Cash During the Period
Effect of exchange rate changes on cash and cash equivalents and restricted cash	3,073	278
Net increase (decrease) in cash and cash equivalents and restricted cash	5,707	(4,150)
Cash and cash equivalents and restricted cash, beginning of period	209,676	210,731
Cash and cash equivalents and restricted cash, end of period	$ 215,383	$ 206,581